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1. SWEEP VAPORIZATION WHEATTR TRANSIENT CPOST CPRINT DELTIME ECPOST ECPRINT MVGRID PRPOST RUNTIME TRELATION WRPOST DROPLETS DCOLLISION DCONDENSATION DINTERPOLATION DMAX Yeo adapco A 6 Module Command STAR CD Version 3 2 Release Notes Status Name Change Critical Modification Non critical Modification Default Change Deleted DRBOIL DRCREATE DRDIAMETER DRFORCE DRGROUP DRNPROCEDURE DRPMODE DRPROPERTIES DRSDUPLICATE DRTYPE DRUSER DRWALL FUEL INJECTOR PEMISSIVITY SPRAY STPA LIQ FILMS LFBOIL LFCMPONENT LFCONDENSATION LFFORCE LFFUEL LFHEAT LFMASS LFMMENTUM LFMODEL LFPROPERTY Yeo adapco A 7 Module Command STAR CD Version 3 2 Release Notes Status Critical Modification Non critical Modification Default Change Deleted LFSOLVE LFSTRIP LFTDELETE EVENTS LFTYPE EASI EVMGRID MVGRID CHEMICAL CHEREACTION CHMSOLVER CKBREGION CKCTABLE CKELEMENT CKFO CKGOPTION CKIN CKLIST CKMAT CKPOST CKPREP CKREACTION CKRO CKSFRACTION CKSOPTION CKSPECIES CKTHIRD COMCHECK yo adapco A 8 Module Command STAR CD Version 3 2 Release No
2. es stands for Expert Systems which more accurately reflects the aim of these tools There have been a number of bug fixes and improvements in memory handling and error trapping in the es tools The major enhancement for v3 103 520 is an overhaul of the Advanced External Aerodynamic Mesh Wizard Other enhancements include e The custom mesh generation now takes advantage of pro am s new auto refine template generation This adds the ability to refine the mesh based upon curvature surface proximity or cell type The method is quicker and uses memory more efficiently e Local refinement can now be specified right on the Mesh Wizard panel This makes it easier to refine grill openings and local features e Prepare Surface Surface wrapper quality has been improved The surface wrapper now removes free edges multi joins and sharp edges which are generated during the wrapping procedure e Generate Subsurface Simple Extrusion now handles variable subsurface thickness e Generate Subsurface Advanced Subsurface has been added This is an excellent choice for preventing surface intersections in a tight geometry e This mesh wizard originally intended for underhood modeling is now also available with es aero to enable it to handle dirty CAD data as well Fa NA Version 3 20 Version 3 20 Previous Release Updates in chronological order v3103 521 522 Updates Beginning with v3103 521 we are moving over to dynamically
3. 1 8 Yeo adapco STAR CD Version 3 20 Release Notes 5 10 Liquid Film Modelling 5 11 A new liquid film model allows for convection within the film mass transfer with the gas phase and momentum and heat transfer with the walls and gas phase see also Chapter 16 Liquid Films in the Methodology volume and Chapter 17 Liquid Films in the User Guide Films can be formed by droplet impingement or can be present as an initial condition the latter is currently a Beta feature Free Surface and Cavitation Major developments in this area are e VOF heat transfer This feature has been enhanced to include conjugate heat transfer between fluids and solids plus variable specific heat capacities and thermal conductivities for both phases It also includes heat transfer in cavitating flows e Cavitation The Rayleigh model has been added to the cavitation model suite Both two fluid liquid and vapour and three fluid liquid gas vapour cavitation modelling is available e Free surface with surface tension The surface tension model was extended to enable users to define a contact angle at wall boundaries Both the surface tension coefficient and the wall contact angle may be specified in any manner through user coding e Other VOF extensions Free surface cavitation modelling in non Newtonian fluids or within porous media are now available Further details are given in Chapter 14 of the Methodology volume and Chapter 15 of the
4. At present the default setting for STAR runs is for StarWatch to be switched off Type star watch if you want to turn it on Port specific Issues 1 Linux ports Linux Motif has problems with diamond shaped toggle buttons If the user selects a diamond shaped toggle button option in pro STAR does not save this setting goes to another panel and then back to the original panel the setting of the toggle button goes back to the previous saved value and the user cannot select this toggle button option again 2 The Sun pro STAR port does not allow the user to cut and paste inside user defined panels and may cause the program to crash Any task that brings up the file selection dialog will crash if the user logs in with any of the following setups en US en US ISO08859 en US ISO08859 15 It works for C POSIX and this is the environment recommended by SUN b STAR Features 5 1 STAR PNP Plug amp Play A new methodology called STAR PNP has been developed for running STAR v3 20 see also Chapter 2 p 2 5 in the User Guide STAR PNP is a completely new approach to running STAR that removes the distinction between sequential parallel and batch runs This works by automating the majority of tasks the user had to perform to set up sequential and parallel runs in previous STAR versions For instance the starlink utility is no longer required as there is no longer a need to create an executable even in cases requiring user coding
5. The error will be fixed in the next release In the meantime a possible workaround is to scale up the model with command VSCALE vertices and coordinate systems in pro STAR before issuing the VFCA command Note that an appropriate scaling factor should then be used with the GEOM command to cancel out the effect of this scaling up At present the environmental patch area is not available to the user hence the determination of the scaling factor is a trial and error process Yeo adapco 2 2 STAR CD Version 3 26 Release Notes 2 2 Known Issues 1 Models containing baffles inside materials where radiation is not calculated e g baffles in solids produce erroneous radiation loads on the baffle To avoid the problem define boundaries on such baffles and set the transparency 1 0 for these regions 2 Linux ports a Linux Motif has problems with diamond shaped toggle buttons If the user selects a diamond shaped toggle button option in pro STAR does not save this setting goes to another panel and then back to the original panel the setting of the toggle button goes back to the previous saved value and the user cannot select this toggle button option again b There is an incompatibility between the extended mode glm driver in pro STAR and certain NVIDIA drivers Specifically versions 1 0 5336 and 1 0 5328 of the NVIDIA drivers are known to cause the X server to crash upon exit from pro STAR This issue was partially resolv
6. completely specified in the new v3 2 environment before attempting any STAR runs Special attention should therefore be paid to cases containing the following features 1 Lagrangian multi phase flow After resuming from a Version 3 15 md1 file the problem specification may not be complete and may need to be checked by the user In particular a If explicit parcel injection in transient mode is involved the user will need to provide values for Flow rate Start injection time and End injection time Yeo adapco 1 3 STAR CD Version 3 20 Release Notes using the new pro STAR panels However the injection time may be incorrectly written to the new injection table b Injector flow rates specified in pro STAR v3 20 are mass flow rates Therefore resuming from an old model file where volumetric flow rates are used involves an internal conversion which may not be correct and needs to be verified The user also needs to specify the name of the table file in which the converted data are to be kept c Users should take special note of the fact that pro STAR v3 20 tables are dependent on whether time or crank angle is selected as the unit of time Old style tables on the other hand are defined in terms of time regardless of the time unit used d The total injected fuel mass within the spd file will be incorrect for cases with multiple fluid streams 2 Buoyancy The specification of body forces gravity is
7. r ee D 3 to adapco STAR CD Version 3 26 Release Notes Version 3 26 Release Notes 1 Introduction Version 3 26 is the latest update of the STAR CD V3 2 suite offering a number of additional features that are not available in the previous V3 20 V3 24 releases Note that this release has not been ported yet to the Windows platform 2 Pre and Post processing Features 2 1 New Developments The main areas of development were as follows 1 A new surface wrapper tool was incorporated into pro STAR s auto meshing module prostar amm Its main advantages over the previous tool are a Much faster run times by a factor of 4 10 and lower memory requirements 1 3 1 4 of the old tool b Leak detection c Can close large surface gaps d Baffle inflation assigns a finite thickness to internal shells representing baffles e Variable refinement levels based on curvature and proximity f Localized surface properties to control mesh density g Edge retention h Contact prevention 2 The tetrahedral meshing option based on the TETGENERATE command has been formally removed from the auto meshing GUI panels but is still available on the command line The options for the Delaunay based tetrahedral mesher were also enhanced in the same GUI panels 3 Many improvements were made to pro STAR s CAD import and surface preparation module prostar surf a Additional native CAD file formats are now supported due to
8. through the solid material is to be considered If radiation in the solid is on the transmissivity at the solid fluid interface must be 1 otherwise it must be 0 The following issues concern liquid films a Droplets impinging on a film are not converted to film if the Lagrangian two phase solution procedure is set to Predictor Only b At present momentum transfer will always be active for liquid films 1 e the setting specified in pro STAR has no effect c Coupling between liquid film and gas phase follows the Lagrangian two phase setting Switch 123 can be used to decouple the liquid film from the gas phase when the Lagrangian two phase option is inactive d Liquid film wall data do not appear in the run file even when the user has specifically requested them When using the Crank Nicholson time discretisation scheme the mass energy and species fluxes appearing in the info file are reported on the basis of the fully implicit scheme s differencing molecule not the correct Crank Nicholson molecule The non adiabatic implementation of the PPDF combustion model may not give accurate results as far as species mass fractions are concerned Work is in progress to rectify this by modifying the code to compute both species mass fractions and temperature from the enthalpy obtained from the transport equation solution The modification will also allow treatment of multiple air or fuel inlets with the same composition but
9. E E 4 2 Windows specifie Features 1 21uianssts ld vavi ssta nai kst lan o lala a s Taa ava laa 4 2 KO sara k a 4 3 General issues 4 3 General APE ISSUES O ete 4 4 Port specific HPC ISSUES 4 Sn alla iiS 4 4 Other POLES Pe CU CIS SUES ede ucc e amc beue fette nr 4 4 4 User Documentation Version 3 20 Release Notes 1 Introduction 2 Pre and Post Processing pro STAR Auto Mesh module pro am aaiaaiaaaaassaasassassasasansansannnnnnnnnnnnnnnnnnnnnninni 1 1 CAD Import and Surface Meshing tool pro surf sese 1 1 LAREDO ds 1 2 3 pro STAR Features Cienerab aaa ul dtd s ui Dd Cd to aus de Dreh tua RO SR 1 2 Other Features ceja RE 1 2 Pile Compatibilty e diea iade ecd rc vods dida aie edat 1 3 4 Important Notes for pro STAR Changes OP PIA CH CG tons tr at ts dd 1 3 Known ISSUES ads 1 4 IQUITOS a SR ese B J la Cuts shee Ma eeu AA 1 4 Transi nts ER 1 5 HiRes Screen dump A SK e Ba a Sa a e due d 1 5 Star Wath MT S aa a a ae nn urine 1 5 Potrt specifie ISSUES tn ne di 1 5 5 STAR Features STAR PNP Plug amp Play nisi e tre t eae a bound isis 1 5 Dynamic Memory Allocation 0000 A A use Bee es 1 6 NA A II eats An 2e 1 6 ON Oo STAR CD Version 3 2 Release Notes Eulerian Evo PR Ase PU di A A G R eles i Bish ete re 1 7 Turbulence Models nec octo t ata cti Goin A cn es es le 1 7 Wall FUNCIONS o E S S o ik 1 7 Combustion Models soii E ird S oi
10. POLSCALAR POPCP POPD POPK POPLV Yeo adapco A 3 Module Command STAR CD Version 3 2 Release Notes Status Critical Modification Non critical Modification Default Change Deleted POROSITY formerly POROUS RSOURCE SCPLIST SCPMODIFY SCPROPERTIES SCSOURCE SHTRA SPECIFICHEAT SPIN SRCLIST THERMDIF TUGL TUSSG SCALAR WALLFUNCTION POSCP POSD POSK POSLV BOUNDARY SC BDELETE BPATCH BPCOMPRESS BREAD BZONE CICDEFINE Yeo adapco A 4 STAR CD Version 3 2 Release Notes Status Module Command New Name Critical Non critical Default Deleted Change Modification Modification Change CICOMPRESS e CIDELETE CILIST CIMM CITAG MPCCI RDEFINE RINLET RTPRESSURE RTURBULENCE CONTROL AAANALYSIS BRMONITOR CAVITATION CAVNUCLEI CSMONITOR DSCHEME EDATA FLUINJ FSDSCHEME FSMASSTR s FSSUBCYCLE s FSURFACE LESOUT e MFRAME PANALYSIS POWALL PRCHECK A 5 Yeo adapco Module Command STAR CD Version 3 2 Release Notes Status Name Change Critical Modification Non critical Modification Default Change Deleted PRWALL RADIATION RDATA RELAX RESIDUAL SCCONTROL SOLAR SOLVE STENSION
11. User Guide 5 12 Engineering Data Output The ability to monitor engineering data during the course of the analysis via the case erd file has been extended Data can now be monitored at virtual surfaces within the solution domain in addition to standard boundary regions see Internal Regions on page 7 40 of the User Guide for more information 5 13 Boundary Condition Enhancements Major developments in this area are e Riemann Invariant condition A new boundary condition useful in external aerodynamics simulations Its application allows pressure waves to leave the solution domain without reflection e Radial equilibrium pressure boundary A new boundary condition useful in turbomachinery applications e Non reflecting boundaries A set of these pressure stagnation and mixing plane types may be used to improve the accuracy of steady state simulations in cases where strong pressure waves leave the solution domain e Boundary values of turbulence parameters in terms of k epsilon turbulence intensity mixing length or Reynolds Stress components can now be specified per boundary region e The stagnation boundary condition has been extended to accept stagnation quantities in either an absolute or a rotating frame of reference 1 9 yo adapco 6 7 STAR CD Version 3 20 Release Notes Further details are given in Chapter 5 of the Methodology volume and Chapter 7 of the User Guide 5 14 Anisotropic Conductivity in Solid
12. a pro am license v3103 520 Updates Release v3103 520 contains changes on many fronts The base pro STAR code includes a completely rewritten OpenGL based accelerated graphics mode which is up to four times faster than the previous version In addition for users without hardware OpenGL support the Mesa library is included to provide software emulation of OpenGL There have also been a number of enhancements and bug fixes to the ammbatch program and the pro am panels These include e Continued improvement in CPmatch generation e New surface has been rewritten and improved Boundary generation for tetrahedral meshes For a certain class of cells there is much less use of cell division which results in triangles to resolve face based cells e A surface improvement procedure has been added This code improves a triangulated surface in such a way that 1t can be successfully used to generate a tetrahedral mesh e Surface shell boolean operations e A new subsurface method has been added that eliminates the folding and intersection of the subsurface generation Since there are cases where the subsurface thickness is forced to zero the extrusion generation code was changed to correctly handle this situation in tetrahedral meshes With this release the names of many of the additional tools have changed What were formally known as EZtools ie EZaero EZturbo have been renamed as es tools ie es aero es turbo
13. adapco Group support to convert your current CAD reader licences to the new format Create a file named tt _license dat and put the licence information sent from the TTF Group in this file This information should consist of at least three pieces of information a node locked bundle licence a NURBS conversion module and the appropriate CAD reader module s The file should look similar to TTF License file Bundle TTFFundations Id bddac43e for TTF TST Valid on machine abcdef01 until Dec 31 2003 Node locked BND TTFFundations 5319 2a8b b18d 51c2 aa60 9003 cec0 70e9 13ae 32ba List of modules for bundle bddac43e BNDMDL CATIAV4 R 9113a1dda3211 BNDMDL PROENGINEER R ea389d6dede24 BNDMDL Fund NURBS Conversion 6d1c067e4bcda The above file contains module licences for reading data from CATIA V4 and Pro ENGINEER CAD files pro surf will look for the ttf_1icense dat file in the current working directory then in SHOME and finally in SSTARDIR license so you can put the file in any of these three locations A message in the command window should be issued indicating the file name where the TTF licence information was found If a problem is encountered check the output and verify that the proper licence file was found Additional Windows 2000 XP Information Additional licensing software must be installed to access the TTF CAD readers on Windows machines This software should be included with the S
14. approximately equal 3 6 yo adapco STAR CD Version 3 24 Release Notes to or greater than the number of cells the following message may be reported on screen Out of space on attached buffer and the run subsequently stops This is related to the MPI implementation being used If you encounter this problem please contact CD adapco s User Support for information on how to overcome it 4 Cases running MPICH 1 2 4 and the Shared Memory Communication device are unreliable and may fail If this problem is encountered a different MPI implementation should be used instead Alternatively the user may wish to use MPICH with shared memory communications disabled e g star mpi mpich noshmem hostname 2 Port specific HPC issues 1 The Discrete Ordinates radiation model does not work correctly in parallel mode for the HP UX and OSF1 platforms 2 The AIX port does not work with the old MPICH 1 2 4 installation supplied with STAR CD V3 20 and V3 22 Please install the new MPICH 1 2 4 installation supplied with the STAR CD V3 24 solver If you compile your own MPICH installation you may need to regenerate your 1ibmpi so dynamic shared object using star mkso MPICH ch shmem lib shared libmpi so MPICH ch_shmem lib libmpi a star mkso MPICH ch_p4 lib shared libmpi so MPICH ch_p4 lib libmpi a 3 The MPI implementation on HP Alpha OSF1 clusters may fail This applies to both HP Alpha MC MPI Memory Channel and HP Alpha SC MPI e
15. based on the actual enthalpy Rotating reference frame cases using a Reynolds Stress turbulence model fail to converge The AMG solver requires that all mesh regions associated with a given material are connected The only differencing scheme employed by STAR when solving for density is CD If the pro STAR setting for density is MARS STAR changes it internally to CD and uses a value of 0 7 for the blending factor A message to this effect appears at the top of the run file The Crevice sub model of the ERC engine simulation package is not operational in this Release Port specific issues 1 2 Solaris 5 7 port STAR Launch may hang on start up if the user s home directory resides on a disk mounted on a Solaris 5 7 system Linux x86 port Users of Red Hat 9 0 and Red Hat Enterprise Linux 3 RHEL3 systems should note that there are bugs in Red Hat s x86 versions of the NPTL POSIX thread libraries One confirmed effect of these bugs is for pro STAR moving mesh analyses to hang immediately after the geometry calculations Another problem is that STAR V3 26 which uses FLEXIm 9 5 for licensing may either crash with a segmentation fault or hang on unpatched systems The required fix for RHEL3 RHBA 2004 384 11 can be downloaded from 2 6 yo adapco STAR CD Version 3 26 Release Notes https rhn redhat com errata RHBA 2004 384 html As Red Hat 9 0 is no longer supported by Red Hat upgrading to RHEL3 is recommended The
16. differencing molecule not the correct Crank Nicholson molecule 4 The non adiabatic implementation of the PPDF combustion model may not give accurate results as far as species mass fractions are concerned This is due to the fact that species mass fractions are computed on the basis of adiabatic equilibrium conditions The temperature however is re computed based on the actual enthalpy 5 Rotating reference frame cases using a Reynolds Stress turbulence model fail to Yeo adapco STAR CD Version 3 24 Release Notes converge 6 The AMG solver requires that all mesh regions associated with a given material are connected 7 The only differencing scheme employed by STAR when solving for density is CD If the pro STAR setting for density is MARS STAR changes it internally to CD and uses a value of 0 7 for the blending factor 8 The Crevice sub model of the ERC engine simulation package is not operational in this Release Port specific issues 1 Solaris 5 7 port STAR Launch may hang on start up if the user s home directory resides on a disk mounted on a Solaris 5 7 system 2 Linux x86 port Users of Red Hat 9 0 and Red Hat Enterprise Linux 3 RHEL3 systems should note that there are bugs in Red Hat s x86 versions of the NPTL POSIX thread libraries One confirmed effect of these bugs is for pro STAR moving mesh analyses to hang immediately after the geometry calculations Another serious problem is that STAR V3
17. has been added to indicate CPmatches that have been generated automatically within pro am Improvements in extrusion layer generation to improve cell quality e Improvements in the manner in which the new surface generation option is applied e New Delaunay tet mesher e New Supplemented cell division with an advancing front tet mesher to increase reliability increase speed and reduce the unresolved cell count e New Grow and Tet fill option around unresolved cells to reduce the unresolved cell count e New Automatic mesh refinement based on surface geometry e New Boolean operations on shell surfaces have been added e Improved Mesh Wizard for building geometry The wizard now includes more error detection improved surface usage automatic template generation based upon surface features plus the tetrahedral mesher pro am v3103 519 also contains the second release of EZaero designed specifically for external aerodynamic analysis It contains the first release of EZuhood designed for highly complex internal flows typical of vehicle underhoods It also contains the a NA B 3 Previous Release Updates in chronological order first release of EZturbo designed to produce very refined elliptically smoothed meshes around the blades of turbo machinery equipment Please contact your sales representative or CD adapco directly if you are interested in any of these products All EZturbo licenses also include
18. in a CFD model A suffix _1 is added to the chemical formula of liquid substance entries so that the code may correctly distinguish between the two property sets Radiation The heat source to be added to the enthalpy equation due to participating media radiation is now always subject to a non linear treatment In v3 15 this treatment was a user selectable option determined by the Enthalpy Treatment setting in the Thermal Options panel In v3 2 it is not possible for users to choose otherwise as this treatment leads to more accurate results Wall heat transfer The local heat transfer coefficient on a wall boundary is now calculated using the specific heat instead of the mean specific heat as in previous versions of the code Differences may be observed when variable specific heat is chosen for material properties Switch 31 can be used to revert to the previous practice mean specific heat Known Issues General issues 1 The following features are not currently available under the STAR CD 3 20 solver a Chemical reactions using STAR KINetics deferred to release v3 22 b The GT POWER interface deferred to release v3 24 c Fluid Structure interaction under the MpCCI code coupling interface deferred to a future STAR CD release Yeo adapco STAR CD Version 3 20 Release Notes There are four known issues with thermal radiation a The transmissivity for external walls must be set to 0 External walls are all wa
19. integration of newer versions of the TTF library These are 1 Catia V5 R11 R12 R13 and R14 files ii Catia CATProduct files i e assemblies iii Catia CGR files up to V5 R13 This requires an additional TTF license iv Pro ENGINEER WildFire 2 files b STL file import is supported c Improved performance of the NURBS evaluation resulting in 2 times speed up of surface mesh generation d Improved performance of native CAD import by eliminating unnecessary conversions of duplicate curves e Fixes to many bugs concerning the surface mesh generation algorithm Yeo adapco 2 1 STAR CD Version 3 26 Release Notes f Descriptions of the various manual CAD repair tools were added to the User Guide g A revised tutorial example has been included in the Tutorials volume The batch processing version of the surface module prosurf batch also includes the following improvements a Reads Catia CGR files b Reads STL files c Additional pro surf controls are now available in batch mode e g all mesh generation controls and the point and curve tolerances d Writes mesh data as cell and vertex files A free standing view factor calculation module FASTRAC was added to the STAR CD suite for use in surface exchange radiation problems see also Section 3 1 below This calculation method is not currently supported for cases requiring a symmetry and cyclic boundaries b moving meshes c radiation sub domai
20. participating media or solar radiation Currently the AMG solver can run with a maximum of 256 processors STAR PNP supports the following queuing systems LSF OpenPBS and Sun Grid Engine Users needing this facility should contact CD adapco for the relevant details The following issues concern parallel runs of Lagrangian two phase cases a When merging the pst pstt files of transient runs some droplets may be reported as lost This is not in fact the case and if the individual pst pstt files are separately loaded from each sub domain the droplets correct status and properties can be displayed This problem will be resolved by the time of the next interim release b For cases where the number of parcels is approximately equal to or greater than the number of cells the following message may appear on screen Out Of space on attached buffer and the run subsequently stops This is related to the MPI implementation being used If you encounter this problem please contact CD adapco s User Support for information on how to overcome it Port specific HPC issues 1 Cases running on HP UX Itanium platforms with MPICH and the Shared Memory Communication device are unreliable and may fail If a problem occurs HP Itanium MPI should be used instead Lagrangian multi phase cases running on IRIX MIPS platforms using the SGI MIPS MPI may lose droplets as they pass between sub domains If such a problem is encountered MPICH sh
21. repair many common CAD problems either automatically or manually and triangulate the surface in preparation for use by pro am or other volume meshing programs This tool simplifies the process of converting CAD surface and curve data into a surface mesh that captures all features and resolves all geometric shapes Its methodology automates many of the tedious CAD repair operations reducing the time and effort required by a user to obtain a complete and closed surface geometry with no 1 1 Yeo adapco 3 STAR CD Version 3 20 Release Notes holes or gaps To start pro surf click the appropriate button on the STAR Launch interface or type prosurf Detailed Release Notes for pro surf may be found in Appendix C of this document 2 3 STAR Design STAR Design is one of the new generation of fully integrated CAD CFD tools being developed by the CD adapco Group The program s core is based on a solid modelling engine that is integrated with all necessary tools for performing a CFD analysis This allows design engineers to create and assemble models of interest set up any necessary flow conditions generate a mesh run and view the results all within a single graphical interface Since the solid modeller tracks the parametric values used during mesh construction design modifications can be applied quickly and the flow analysis re run with very little effort To start STAR Design click on the appropriate location on the STAR Launch interfa
22. sess 1 17 User Defined Arrays sein EUR RENTES E eased cata nO RA EV UR aad 1 17 STAR Defined PIT ays 4 eed Ee e er 1 18 111 STAR CD Version 3 2 Release Notes 11 User Documentation Appendix A Summary of Command Changes Appendix B Automatic Meshing Version 3 20 Release Notes New for release v 2D uri ida B 1 Previous Release Updates in chronological order ooooonnncccnonccinoncccnnancnnnnnnnnnnccnnnnos B 1 V3l02 515 Updates ios B 1 MOO ZOO e A Se ose B 2 13102317 Updates iii rad B 2 VI l02 5 A B 2 V3103 519 Update S osados B 3 V3103 520 Updates csi ida l sta m li anta ustad B Bl H aa Baa B 4 v3103 521 522 A D R ARR RRR mes B 5 Appendix C CAD Import and Surface Meshing Version 3 20 Release Notes POE PON Ss 5 soy eau aces EE C 1 CAD File Import Notes 2 teret eet ta dile as e l aaa Sa Ba a C 2 Catia Mi A j ltr ee Ad C 2 Cata VS ne ar Ta A ia C 2 o kanta nn ent sn nr nr C 2 Pro ENGINEER ee a Sl e A Sn ee DURER ER ae B EE C 2 TTF CAD Reader Licence Instructions ieiunio roe ttadt ee dore pat cuero d C 3 Additional Windows 2000 XP Information sese eene C 3 Appendix D STAR Design Version 3 20 Release Notes PROC LION ores ios opea TO D 1 New Features In this Release uote dtm peris D 1 Transitioning from Version 3 15 lo oer Ut I E CHR DER METH Ue RI STRE D 1 Important NOteS RT D 2 Frequently Asked Questions 22 525 3 A
23. surface checks and orientation will be performed by pro surf in the future e A restart file should always be saved after writing out a database for pro am This way if a problem is found during the surface checks the user can look at the cell table that contains the problem triangles The name of the cell table indicates which surface the triangle was on in the CAD model The pro surf restart file can be loaded and that surface examined fixed and or re triangulated e Ifyou want to triangulate the model or specific surfaces without using the automatic curvature detection set the minimum size due to curvature to a negative value e You can triangulate one or more surfaces while maintaining any previously existing triangles on the other surfaces However re triangulating surfaces with a size much smaller than neighbouring surfaces will result in a very poor quality surface mesh a A C 1 CAD File Import Notes C 2 e I GES files from Pro ENGINEER I DEAS and SolidWorks usually read in without error and require very little manual cleaning IGES files exported from CATIA and Unigraphics IGES files work for the most part but they sometimes exhibit problems with free curves incomplete trimming loops and incorrectly defined surfaces of revolution CAD File Import Notes The add on direct CAD file readers allow for importing of CAD model data directly from the files saved by the CAD package This approach circumvents many of the
24. was enhanced to allow inclusion of non coal particles within the flow as in sulphur in coal or coal biomass fuel blends Other Developments 1 The turbulent dispersion model for Lagrangian multi phase simulations has been enhanced Previously it was assumed that the eddy interaction time was much smaller than the computational time step in transient simulations where this assumption was invalid the dispersion was inhibited The eddy was also assumed not to persist when a particle passed through cyclic boundaries or was reflected from symmetry boundaries These restrictive assumptions have now been removed which will generally promote particle dispersion 2 The practice of ensemble averaging droplet source terms in steady state Langrangian multi phase simulations has been replaced by simple under relaxation using the standard Under Relaxation of Lagrangian Sources parameter default 0 35 The previous ensemble averaging procedure can be recovered by setting Constant 24 to the iteration number at which averaging will begin 3 The liquid film model was extended by including an unsteady term and the effects of gravity and wall acceleration in the momentum equation In addition the solution algorithm was improved to increase its accuracy and robustness and a threshold value introduced for the minimum liquid film mass in a wall cell The latter is now set to 0 5E 15 default Users may change this value by adding the following lines in the pro
25. who are upgrading from V3 15 should note that several modelling facilities have been extensively re designed compared with V3 15 Such users should therefore check carefully that a previously created model is correctly and completely specified in the new V3 2 environment before attempting any STAR runs Special attention should be paid to the following features 1 Lagrangian multi phase flow After resuming from a Version 3 15 mal file the problem specification may not be complete and may need to be checked by the user In particular a b a c d If explicit parcel injection in transient mode is involved the user will need to provide values for Flow rate Start injection time and End injection time using the new pro STAR panels However the injection time may still be incorrectly written to the new injection table Injector flow rates specified in pro STAR V3 2 are mass flow rates Therefore resuming from an old model file where volumetric flow rates are used involves an internal conversion which may not be correct and needs to be verified The user also needs to specify the name of the table file in which the converted data are to be kept Users should take special note of the fact that pro STAR V3 2 tables are dependent on whether time or crank angle is selected as the unit of time Old style tables on the other hand are defined in terms of time regardless of the time unit used The total injected
26. 24 which now uses FLEXIm 9 5 for licensing may either crash with a segmentation fault or hang on unpatched systems The required fix for RHEL3 RHBA 2004 384 11 can be downloaded from https rhn redhat com errata RHBA 2004 384 html As Red Hat 9 0 is no longer supported by Red Hat upgrading to RHEL3 is recommended These problems have not been found to effect STAR on the Itanium and AMD64 versions of RHEL3 however Red Hat recommends that the patch mentioned above is applied to all RHEL3 systems 3 Windows port a The default STAR CD mode of operation is to use memory based scratch files On the Microsoft Windows platform however this may cause STAR to crash under certain circumstances Use the noramfiles option as a workaround b Users with Windows XP Service Pack 2 or users who have a software firewall installed will encounter warnings regarding the blocking unblocking of executable programs or network ports You will need to keep the following unblocked 1 star ii mpich related components mpi run mpd daemon 111 starwatch and starwatch daemon 3 3 Known HPC issues 1 Running STAR in parallel is not feasible for cases involving a The Discrete Beams radiation model with participating media for such cases users are advised to use the Discrete Ordinates radiation model b Solar radiation 2 Currently the AMG solver can run with a maximum of 256 processors 3 In Lagrangian two phase cases where the number of parcels is
27. 58 NR RELEASE NOTES STAR CD Version 3 2 CONFIDENTIAL FOR AUTHORISED USERS ONLY 2005 CD adapco STAR CD Version 3 2 Release Notes TABLE OF CONTENTS Version 3 26 Release Notes 1 Introduction 2 Pre and Post processing Features New Development nsc nO eS 2 1 Known ESSOR a k 2 3 3 STAR Features New Development did ii 2 4 Other Developments ns 2 4 Known General ISSUES a dde 2 5 PIE EAS o S Wa 2 6 Known HP issues D cas 2 7 Port specifiG HPC ISSUES ENS ST ice te ected tu vate nai lure e eas 2 7 B atch T NNING ISSUES anita 2 7 4 User Documentation Version 3 24 Release Notes 1 Introduction 2 Pre and Post processing Features New Developed a o eta tos dt 3 1 Known Issues m 3 1 3 STARFeatures NewDBVe IGDEHOHIB v tat pene teste e LE EP D E IO EU a 3 2 Engine Combustion Modelling ss 3 2 Other Development qe E M 3 3 KNOWN General ISSUES ica 3 5 POM SPECIIIC Seo a io Bes Dod Oe Ties Piu oia tai 3 6 Known HPC ISSUES ui dd 3 6 Port specitic HPC I550 S A A A At Mn 3 7 Batcli tutung ISSUES setas 3 7 4 User Documentation Version 3 22 Release Notes Yeo adapco STAR CD Version 3 2 Release Notes 1 Introduction 2 Important Notes for Pre and Post processing NEW DO A SG saa Mb M Cu Re 4 1 KO Win ISSUES P nes 4 POM eS PECIIE SSUES si cit Ss a 4 3 STAR Features New IS VE ODIBGIs 6 IAE SES a A
28. For parallel runs the Pro HPC interface is no longer required There is also no need to employ separate geometry decomposition or split merge tools as these are now fully automatic Note that you must start your job from an NFS disk that is accessible by all the nodes The STAR solveris supplied as a number of objects which are automatically loaded as required and any user coding is automatically compiled building a new yo adapco 1 5 5 2 5 3 STAR CD Version 3 20 Release Notes loadable object The installation structure is also different from STAR v3 150A and older versions The STAR v3 20 installation consists of separate components for FLEXLM MPICH pro STAR STAR and STARNET each with its own version numbers The versions selected are defined by running the initialization command for each shell that needs to run STAR PNP Thus there is no need to set a STARDIR environment variable as the correct components are accessed through a set of Dynamic Symbolic Links DSL The STAR solver is STAR NET 3 0 compliant and will automatically recognize the Dynamic Node Allocation DNA assigned by resource managers supported by STAR NET With this new methodology users now only need to type star perhaps followed by a number of options if necessary to run a case STAR PNP will automatically detect the main features of the case e g moving mesh user coding etc and take appropriate actions For example to run a case using four process
29. STAR Extended Data section BEGIN LF_DATA LF_TRUNCATE new_threshold_value 2 4 Yeo adapco STAR CD Version 3 26 Release Notes END LF_DATA 4 An interface to HP MPI was added to all GNU Linux ports of STAR CD to enhance its parallel running capabilities HP MPI supports Gigabit Ethernet Myrinet and InfiniBand network interconnects For further information please consult http www hp com go mpi 5 An interface to Intel MPI was added to the GNU Linux port for Intel Itanium Intel MPI supports Gigabit Ethernet Myrinet and InfiniBand network interconnects For further information please consult http www intel com software products cluster mpi 6 RA MPICH has been integrated into the GNU Linux port for the AMD Opteron processor The RA MPICH implementation of MPI is based on MPICH and requires Rapid Array network interconnects on the Cray XD1 For further information please consult http www cray com products xd 1 7 The communication method used for moving mesh cases has changed Previous STAR CD versions used fork by default but socket could be selected instead The current version uses socket by default and fork can be selected instead This affects cases with a variable timestep which previously ran with fork communication but do not run as is with socket communication To overcome this problem a Use the fork run option to force the old fork process b Use the nolookahead opti
30. STAR in OpenGL mode A non Unicode setting is required to stop the warning messages for example by setting the LANG environment variable to en_US or en_GB 2 Microsoft Windows port a b c d pro STAR user subroutines are not supported The Mesa graphics option is not available for this platform There is a compatibility problem between the supplied X server SCO XVision and certain integrated Intel graphics chipsets resulting in 100 CPU usage by XVision Users with Windows XP Service Pack 2 or users who have a software firewall Yeo adapco 3 1 e STAR CD Version 3 24 Release Notes installed will encounter warnings regarding the blocking unblocking of executable programs or network ports You will need to keep the following unblocked 1 The supplied X server SCO XVision will trigger these warnings with Vision Services and X Vision 32 bit Server ii pro STAR components pro x exe pro xm exe pro glm exe stardesign prosurf The CAD enabled packages STAR Works STAR Pro E and STAR NX are not available in the STAR CD V3 24 installation Users requiring the CAD functionality need to continue using STAR CD V3 150A until these packages become available in a future release 3 STAR Features 3 1 New Developments Engine Combustion Modelling Two new engine combustion packages ERC and ECFM are now available to STAR CD users under a special licence Prospective users of these packages
31. TAR CD Windows distribution Run the RainbowSSD5 39 2 exe executable to install Version 3 20 C 3 a A Additional Windows 2000 XP Information the additional licensing software Since the TTF CAD reader licence key is based on the hardware address of the Ethernet card an environment variable called TTF_LIC_ETHER must be added to the system and its value set to 1 so that the licences will work properly Also the search path for the tt _license dat file is the current working directory then C and finally SSTARDIR license C 4 Version 3 20 Fa A Introduction Appendix D STAR Design Version 3 20 Release Notes Introduction STAR Design represents one of the new generation of fully integrated CAD and CFD tools being developed by the CD adapco Group The core of the program is based on a solid model engine integrated with all of the necessary tools to perform CFD analysis This allows design engineers to create and assemble models of interest setup any necessary flow conditions generate a mesh run and view the results all within one graphical interface Since the solid modeller tracks the parametric values used during construction design modifications can be applied quickly and the flow analysis rerun with very little effort New Features in this Release This version of STAR Design includes many new and changed features in solid modelling problem definition and post processing stages These changes include e Soli
32. XP 32bit Appropriate 32 bit versions of STAR Design are also installed with 64 bit installations of STAR CD of AIX Linux and IRIX For users running the Linux operating systems on platforms with the Itanium chipset the 32 bit STAR Design will run but performance may not be optimal In these cases the installed 64 bit version of the mesh generators and solvers will be used so overall performance should be reasonable A stardesign licence feature and a starsuite licence is required in order to run STAR Design A nosolve command line option is available which uses stardesign and prostar licence features however only pre and post processing are allowed in this mode the solver cannot be run To run STAR Design on a Unix platform execute the stardesign script located in the SSTARDIR bin directory If STARDIR bin was added to the current search path then just enter stardesign at the command prompt For Windows a stardesign batch script stardesign bat is located in the STARDIR bin directory Alternatively it is possible to execute STAR Design from the STAR Launch GUI When a session is saved while running STAR Design all of the grid and run Fa NA Version 3 20 Frequently Asked Questions information will be saved into a subdirectory with the given session name This subdirectory will contain the pro cad solid model file pcd the pro surf restart file ezs the ammbatch database file
33. atic CAD repair routines which can fix most CAD problems commonly found in CAD data Additional manual repair and simple surface curve creation functions are also available to deal with problems that could not be repaired automatically Important Points Version 3 20 e If problems occur with incorrect display of the interface or graphics window try running the application with the command line option cmap e g usr local star bin prosurf gl cmap It is recommended that the X windows display be set to 24 bit depth with the TrueColor visual class You can check which display is active using the xdpyinfo program in X windows and looking for the number corresponding to the default visual id e When trying to read a database file saved from pro surf into pro am set the Casename in pro STAR to be the name of the database file without the dbs extension When the pro am window opens it looks for a file with name Casename dbs in the current working directory The surface mesh in the database file can also be loaded manually by using the DBASE command and options available in pro STAR e Triangular shells must be oriented once the surface mesh has been read into pro STAR pro am If the CAD model was watertight i e no free curves the triangulation should also be watertight The triangulation should also be checked using the surface checks in pro am or command SCHECK to make sure that no intersections or non manifold edges are found All of the
34. beros Secure Shell or any other remote tool as well as the standard remote shell It is now possible to compile user subroutines that require additional dynamic shared objects User subroutines can also be supplied as pre compiled static libraries It is also possible to run the STAR solver using distributed data without mounting a NFS disk onto the remote nodes in order to start a parallel run When running the STAR solver on clusters without NFS the following limitations apply Yeo adapco STAR CD Version 3 24 Release Notes a A local installation of STAR CD and its associated software such as LAM MPI MPICH and RUNTIME must be installed in the same path on all nodes i e opt starcd b The STAR solver master process must be able to access the disk where the case files can be found This means that if you are logged on hostA this host name must occur first in the resource allocation i e star hostA hostB hostC c If the master node crashes the STAR processes running on the slave processors will not terminate properly d Remote compilation of user coding 1 e COMPILERHOST is not supported e Remote geometry decomposition i e decomphost hostlist is not supported f Remote merging of data i e mergehost hostlist is not supported g A job running under a batch system will not find its files and will fail 3 2 Known General Issues 1 There are three known issues concerning thermal radiation a The
35. ce or type stardesign Detailed Release Notes for STAR Design may be found in Appendix D of this document pro STAR Features 3 1 General comments Considerable effort has gone into upgrading pro STAR s STAR GUlde interface in order to support the new STAR v3 20 modelling capabilities as listed in section STAR Features on page 5 of these Release Notes Some panels for existing features have also been redesigned to improve the way in which cases are set up Other Features Many of the new features available in pro STAR 3 20 have been released in patches since the original v3 15A release These include but are not limited to items in the following list Major upgrade to OpenGL graphics capabilities It is now possible to plot almost everything available in the older X motif window in a new GL motif window For users who do not have GL enabled hardware another mode named mesa 1s available in which all OpenGL features translucency lighting of post processing plots etc can be simulated in software Mesa graphics are not usually very fast but they do allow a wider range of graphics capabilities to users without special hardware Options exist to save bitmap graphics i e OpenGL hardware generated images in a variety of formats and resolutions These pictures can be produced in batch where no graphics cards are available using mesa graphics Anew lightweight 3 D viewer This viewer runs on all pla
36. cible and has not yet been fixed If this happens simply minimize your STAR Design window and restore it How do I select a face that has been made invisible Using the right mouse button while in face select mode cycles through all faces under the mouse starting with the visible ones Just right click on the location where the face should be until the desired face has been selected How do I assign grid sizing to specific faces Enable Select mode and make sure the Select Face button is toggled down Left click on the face and then click on the Properties tab with the Solid Model Tab selected in the lower right corner panel The properties including grid size can then be modified Make sure to press the Update button to accept the changes How do I stop the grid generation or solver when they are running Press the Abort button at the very bottom right of the interface This will stop the grid generation process instantly while the solver will wait until the D 3 a NA Frequently Asked Questions D 4 current iteration write out a restart file and then stop Why does the Undo button not always work properly The Undo Redo operation only applies to the solid modelling portion of STAR Design A grid generation or solver process cannot be undone Why can t I generate a mesh for my multi body model In order to generate a proper mesh certain rules about the interfaces between multiple bodies must be followed Specif
37. d H Hests Da Ta ls 1 8 Material Properties toon deoa pretiis eens ipei a satis 1 8 Lagrangian Two phase PLOW susi iii 1 8 Erquia Film MOodellllg 455342 le cid ri ai iia nn de 1 9 Free Surface and Caviar nd is 1 9 Engineering Data Output At A A A A da A dude 1 9 Boundary Condition Enhancements sia 1 9 Anisotropic Conductivity in Solids ss 1 10 Tables for Sources and Initialisation eee 1 10 R dlati n A salta 1 10 STAR Beta level Features Code and File Structure Changes Use of Switches and Constants Important Notes for STAR 10 User Coding Changes or Practic sino sabar ne kaa sd nel 1 11 Stagnation boundary conditions AA di 1 11 Lagrangian multi phase cases miis 1 11 Numerical methods craig Jon a de e ete ec de snnt 1 12 STXREQUIDUE en en nues soi eae aie nd du oio AR ner 1 12 Free surface T O WS isidro at line 1 12 The S TAR FOOICHeSE oco e ds de eles 1 13 Material PrO Peres malls 1 13 A IE 1 13 Wall heat transfer ra 1 13 KOREA ca 1 13 General ISSUES a ls 1 13 General HPC ISSUES inner ane te nier rentes 1 15 Port specitio HPC Issues 4200 olsa ast ne nn te nn EN 1 15 Other port spectfIe ISSUES ann ns nie Ce nn arvo ulti ERE EA 1 15 New User Subroutines ioi ees et etie MUR EN anat 1 16 REMOVER User Subroutines 23 e oda da ve po e Ris d ved e area pde uisu e pa s 1 16 Modified User Subroutines sie oni cadi otav i 1 16 Guidelines for Upgrading User Subroutines to Version 3 2
38. d Modelling Linear and circular patterns Imprinting of faces and bodies to produce subfaces Specification of twist and scale during sweep operations Conversion of a set of water tight faces into a solid body Retention of parametric information during fillet and chamfer operations Specification of points and vectors using local workplane coordinates in addition to global coordinates Explosion of extruded revolved swept lofted bodies e Problem Definition Multiple body simulation for Conjugate Heat Transfer Porous Media and Rotating Reference Frames Application of boundary conditions to multiple faces simultaneously Specification of reference locations and values on domains rather than globally e Post Processing Auto update mode for quick updating of plot items Visualization of results on multiple domains Cell and Boundary Types dialog to control visibility and colour of individual cell and boundary types Palette controls for contour plots Point and line probes of scalar and vector data Advanced selection modes for point indication Transitioning from Version 3 15 Version 3 20 To support new multi body physics such as conjugate heat transfer porous media and rotating reference frames some fundamental methods of applying material properties and boundary conditions had to change Even for cases with only a single body and a single domain some operations mus
39. d some STL files if their format deviates from the specification in the following ways a Any keyword is written in upper case or mixed case characters b Any of the keywords endloop endfacet and endsolid includes a space e g end loop c Any line begins with the keyword color Until this problem is fixed you may work around it by editing the STL file so that it yo adapco 2 3 STAR CD Version 3 26 Release Notes conforms strictly to the file format specification 3 STAR Features 3 1 New Developments The main areas of development were as follows 1 An improved method of modelling surface exchange radiation problems FASTRAC based on a fast algorithm for calculating view factors with much smaller memory requirements At present this may be used only in non participating media cases 2 The participating media radiation capability was enhanced to include particle radiation effects previously only available for coal combustion cases 3 The following features were added to the ECFM engine combustion package a A double delay autoignition model b The AKTIM spark ignition model c An extention to the soot model based on the method of moments that also includes EGR effects Research is still in progress on items b and c above so they should be treated as beta features CD adapco would also welcome feedback from users who have incorporated either of them in their models 4 The coal blend model
40. d via user coding Special application specific models are provided for granular flows with added inter granular stress terms For bubbly flows new degassing or escape boundary conditions have been implemented Thermophysical fluid properties may vary according to a range of options including user coding Further details are given in Chapter 13 of the Methodology volume and Chapter 14 of the User Guide Turbulence Models The following new turbulence models have been included in STAR v3 20 see also Chapter 2 in the Methodology volume e Reynolds Stress model This is available in two versions the standard Gibson Launder model and the Speziale Sarkar Gatski model This type of model is useful for capturing complex effects arising from anisotropy curvature swirl and rotation in the flow field e V2F model This has attracted considerable interest over the past few years due to its success in predicting a wide range of flow features especially near walls e k Suga non linear model This offers a more accurate treatment of turbulence at stagnation and separation regions compared to the standard non linear k e model e k and k SST models These are particularly useful when calculating separation and also for flows in adverse pressure gradient regimes e Spalart Almaras model This combines low CPU costs with reasonable accuracy and is especially useful in external aerodynamics applications Wall Functions The following new
41. dbs and the grid files dbs and ngeom Also if the solver has been run all of the solver files will be saved into a subdirectory named star If a problem occurs during the middle of a STAR Design session all of the temporary files pro cad pro surf pro am database and ngeom will be stored in a scratch directory called tmp_stardesign located in the directory where STAR Design was run This directory also contains the output log from ammbatch for the volume mesh generation If you have problems running the OpenGL version you can use the included Mesa shared GL libraries on some platforms by selecting the mesa option when running the stardesign script On newer Linux kernels if you receive an error complaining about GLIBC_2 0 not defined in libc so 6 then uncomment the two lines in the STAR Design script referring to LD_ASSUME_KERNEL If you encounter a repeatable problem please contact us email support us cd adapco com Also any suggestions for improvement of this software in terms of functionality and ease of use would be welcome Frequently Asked Questions Version 3 20 1 How do I change the view while in object selection or creation mode Hold down the Ctrl key on the keyboard to override the current mouse mode and switch to view control I just pressed one of the scroll buttons in the view box and my model won t stop spinning This problem has been reported but is not easily reprodu
42. different temperatures using a single mixture fraction For streams of different composition however the multi fuel PPDF option should be used instead Rotating reference frame cases using a Reynolds Stress turbulence model fail to converge When the k SST model is applied to cases involving heat transfer in impinging flow regions the calculated heat transfer coefficients do not agree with experimental results at present The AMG solver requires that all mesh regions associated with a given material are connected Yeo adapco STAR CD Version 3 22 Release Notes General HPC issues 1 STAR HPC runs are not feasible for cases involving a The Discrete Beams radiation model with participating media for such cases users are advised to use the Discrete Ordinates radiation model b Solar radiation 2 Currently the AMG solver can run with a maximum of 256 processors 3 In Lagrangian two phase cases where the number of parcels is approximately equal to or greater than the number of cells the following message may appear on screen Out of space on attached buffer and the run subsequently stops This is related to the MPI implementation being used If you encounter this problem please contact CD adapco s User Support for information on how to overcome it 4 Cases running with MPICH V1 2 4 and the Shared Memory Communication device are unreliable and may fail If this problem is encountered a different MPI implementation shou
43. does not include static arrays or RAMFILES b For STAR HPC runs cell data from each domain are merged into the run and info files for the whole model Note that the cells are listed under a DOMAIN header and in the order in which they appear within each domain The order in this listing is thus different from the one that would be produced if the model was run in sequential mode Free surface flows For free surface calculations the time step required to solve the VOF transport equation is typically smaller than that required for the other transport equations STAR predicts the time step size required for VOF transport based on the free surface progress In Figure 1 this time step is labelled as DTFS In order to avoid solving all other transport equations with this small time step it is possible to use a form of subcycling see the User Guide and Methodology volumes where several VOF calculations are performed before solving the other transport equations The user can set the maximum number of subcycles in pro STAR DTFS will remain constant during multiple VOF calculations However it is possible for the time period given by the product of DTFS and the maximum number of subcycles value to be less than the original time step specified by the user If this happens a substep period is introduced as shown in Figure 1 which has a time period of DTFS No of subcycles This substep time is used to solve all other transport eq
44. ds volume Table 1 1 List of New Modified and Deleted pro STAR Commands Module Command Status New Name Change Critical Modification Non critical Modification Default Change Deleted PRO FEXTENSIONS FSCAN GEOMWRITE GETFILE SAVE WIPEOUT CALC GET MESH CHECK CMREFINE CMUNREF INE CPARBITRARY CPCREATE CPMATCH CPMERGE Module Command STAR CD Version 3 2 Release Notes Status Name Change Critical Modification Non critical Modification Default Change Deleted CPREAD CPSET CPTABLE CPTMODIFY CTNAME VCROSS VMAP VSCALE CONVERT CGNS ICEM PSTAR PLOT TSTAR ARROW BDISPLAY BSET CSCALE EDGE formerly EDGESEL HRSDUMP LAYER PLMESH RENDEROPT SCENE SETADD SURFACE formerly SURFSEL VIEW Lisino A 2 Module Command STAR CD Version 3 2 Release Notes Status New Name Critical Non critical Change Modification Modification Default Change Deleted UTILITIES COUNT MCALCULATE SMAP TSMAP PROPERTY ACCELERATION BUOYANCY COKE COLES CONDUCTIVITY CONL DENSITY DIFCORRECTION DIFFUSIVITY INISCALAR INITIALIZE LVISCOSITY MOLWT NWALL PMATERIAL POLENTHALPY
45. e only known limitations are on SunOS platforms SUN MPI may not be used for parallel runs and WAVE cannot currently be run as a child of STAR pending a patch from Ricardo Switches 14 and 68 have been removed as obsolete The same functionality is possible with the User f T p option for density specify the required constant density in the DENSIT subroutine and set parameter DENDP to 2 0 SMALL The Anisotropic Conduction in Solids feature now allows user coding to supply principal conductivity coefficients The set up procedure is as follows 3 3 yo adapco STAR CD Version 3 24 Release Notes a Select the Anisotropic Conductivity option for solids via the pro STAR GUI b Use the EDATA command or the Extended Data GUI panel to add keyword ANISO_UCODE to the problem file c Write the conduc f user subroutine to the uf ile sub directory and then edit it accordingly The following developments have been implemented for free surface modelling a The surface tension model has been improved by applying a smoothing function to the volume fraction VOF field when calculating the curvature of the gas liquid or liquid liquid interface b Apart from the default Crank Nicholson temporal differencing scheme an Euler implicit scheme is now offered for the solution of the volume fraction transport equation This is activated by Switch 158 c The buoyancy effect on turbulence energy generation is taken into account when t
46. ecomes fully transparent Set the thermal transparency to 0 999 or less to avoid the problem The following issues concern liquid films a Droplets impinging on a film are not converted to film if the Predictor Only option is chosen for the solution procedure in panel Lagrangian Multi Phase gt Droplet Controls b At present momentum transfer will always be active for liquid films 1 e the setting specified in pro STAR has no effect c In cases containing both sprays and liquid films coupling between the liquid film and the gas phase follows the Two Phase Lagrangian Calculations setting in panel Lagrangian Multi Phase gt Droplet Controls If sprays are not present the default setting is for coupled calculations Note however that Switch 123 may be used to decouple them d Liquid film wall data do not appear in the run file even when the user has specifically requested them When using the Crank Nicholson time discretisation scheme the mass energy and species fluxes appearing in the info file are reported on the basis of the fully implicit scheme s differencing molecule not the correct Crank Nicholson molecule The non adiabatic implementation of the PPDF combustion model may not give accurate results as far as species mass fractions are concerned This is due to the fact that species mass fractions are computed on the basis of adiabatic equilibrium conditions The temperature however is re computed
47. ed from the command line by typing prostar surf batch More information about batch mode and how to use it appears in Chapter 5 of the User Guide CAD Import and Surface Meshing Tool document 3 The program formerly known as pro am is now the automated meshing module of pro STAR It can be started from the STAR Launch interface select Pre Post gt pro STAR amm or from the command line type prostar amm 2 2 Known Issues Port specific Issues 1 Linux ports There is an incompatibility between the extended mode glm driver in pro STAR and certain NVIDIA drivers Specifically versions 1 0 5336 and 1 0 5328 of the NVIDIA drivers are known to cause the X server to crash upon exit from pro STAR This issue has been partially resolved in this release but may still occur in some rare instances and cannot be completely resolved without changing drivers The NVIDIA 1 0 4436 drivers are known to be completely compatibile with pro STAR 4 1 Yeo adapco STAR CD Version 3 22 Release Notes 2 Microsoft Windows port a pro STAR user subroutines are not supported b The Mesa graphics option is not available for this platform c There is a compatibility problem between the supplied X server SCO X Vision and certain integrated Intel graphics chipsets resulting in 100 CPU usage by XVision d Users with Windows XP Service Pack 2 or users who have a software firewall installed will encounter warnings regarding the block
48. ed in V3 22 but may still occur in some rare instances and cannot be completely resolved without changing drivers The NVIDIA 1 0 4436 drivers are known to be completely compatible with pro STAR c Linux64_2 4 Itanium systems Due to restrictions imposed by the Parasolids kernel STAR Design is a 32 bit application and will not run on these systems unless 32 bit compatibility libraries are installed On some systems where compatibility is provided STAR Design performance may be poor Linux64_2 4 x86 Opteron systems Systems that are configured to support Unicode by default the LANG environment variable is set to e g en_US UTF 8 or en_GB UTF 8 will issue warning messages when running pro STAR in OpenGL mode A non Unicode setting is required to stop the warning messages for example by setting the LANG environment variable to en_US or en_GB d wa 3 Solaris port The Sun pro STAR port does not allow the user to cut and paste inside user defined panels and may cause the program to crash Any task that brings up the file selection dialog will crash if the user logs in with any of the following setups en US en US ISO08859 1 en US ISO08859 15 It works for C POSIX and this is the environment recommended by SUN 4 The STL file import feature in pro STAR s CAD import and surface preparation module currently employs a strict interpretation of the format specification for coded ASCII STL files It is therefore unable to rea
49. en HPC subdomains the SETS option in the geomdecomp program may be used to pick subdomains that satisfy this constraint Port specific HPC issues 1 The Discrete Ordinates radiation model does not work correctly in parallel mode for the HP UX and OSF1 platforms 2 The AIX port does not work with the MPICH 1 2 4 installation supplied with STAR CD V3 20 and V3 22 Please install the MPICH 1 2 4 installation supplied with the STAR CD V3 24 solver If you compile your own MPICH installation you may need to regenerate your 1ibmpi so dynamic shared object using star mkso MPICH ch shmem lib shared libmpi so MPICH ch_shmem lib libmpi a star mkso MPICH ch_p4 lib shared libmpi so MPICH ch_p4 lib libmpi a 3 The MPI implementation on HP Alpha OSF1 clusters may fail This applies to both HP Alpha MC MPI Memory Channel and HP Alpha SC MPI elan versions 3 4 Batch running issues The STAR CD 3 2x solvers support all resource managers that are also supported by Yeo adapco 2 7 STAR CD Version 3 26 Release Notes STAR NET 3 x 1 2 The latest STAR NET 3 0 3 supports IBM Loadleveler LSF OpenPBS PBSPro Sun Grid Engine SGE and Torque The PBSPro and Torque resource managers are supported only in OpenPBS compatibility mode 4 User Documentation Further additions and corrections were introduced into the STAR CD documentation set As usual the latest edition is accessible either from the pro STAR Help menu for manual
50. en updated accordingly e Anew surface can now be created from a refined custom mesh without shells being placed on the internal interface of the coarse and fine regions See Chapter 4 in the pro am User Manual for additional details e The tetrahedral mesher can now triangulate five and six sided surface elements automatically prior to creating a tetrahedral cell mesh e A tetrahedral quality distribution graph can be plotted automatically from the panel Two new tutorials have been added namely a Surface Wrapping example Tutorial 4 2 and an Advanced Trimmed Cell example Tutorial 6 which uses unstructured mesh refinement The pro am User Manual also contains many updates to both the text and diagrams The user is encouraged to review Chapter 4 Surface Preparation in particular as it contains additional explanations on the surface checking and modification tools Other chapters include new sections and or diagrams to further aid the user while using pro am pro am v3102 518 also contains the EZAero tool designed specifically for external aerodynamic analysis Please contact your sales representative or CD adapco directly if you are interested in this product v3103 519 Updates Release v3103 519 contains a number of bug fixes to the ammbatch program and pro am panel as well as some major enhancements These include e Significant speed increases for the cutting code e Many improvements to CPmatch generation A new CPmatch type 3
51. enus A brief description of the panel is included in Chapter 4 of the User Guide A limited amount of Error Trapping has also been included in this release please see Chapter 3 of the User Guide for additional details on this As with all releases a small amount of label changes have been made to the panel to improve ease of use and general navigation Current users should not have any difficulty in recognizing the new option names and changes v3102 517 Updates v3102 517 was a request only release containing bug fixes and some minor enhancements which are documented in the v3102 518 section of this document v3102 518 Updates Release v3102 518 contains mainly bug fixes to the ammbatch program and pro am panel as well as some minor enhancements These include e The default extrusion algorithm has been replaced with a new one which should produce better results for trimmed cell meshes with fine coarse refinement areas To activate the old algorithm used in releases up to v3102 517 specify the batch command extrusion method 3 Fa A Version 3 20 Version 3 20 Previous Release Updates in chronological order during the extrusion generation process e The SCHECK command options have been re named to better represent their purpose Please view the on line help or review Appendix C in the pro am User Manual for a summary of the changes All the old options are still valid on the command line The pro am panel has also be
52. eo adapco New for release v3 20 Appendix B Automatic Meshing Version 3 20 Release Notes Version 3 20 represents a new release of pro am containing new and improved existing features The GUI options continue to be accessible via the AutoMesh pull down menu in the pro STAR interface Model and database files from the v3150A releases of STAR CD and pro am continue to be upwards compatible with this release and can be read via the new pro STAR program New for release v3 20 As per all pro am releases the latest ammbatch program continues to improve the quality of the resultant meshes especially in the area of trimmed cell meshes and templates with auto refinement Other improvements and changes have been made in the areas of GUI support surfacing subsurface generation and extrusion mesh generation as follows e New Quad morpher for creating arbitrary quad shells starting from a good quality triangulated surface e New The default subsurface generation scheme is Subsurface Method 8 which combines the advantages of previous methods 4 and 7 Methods 4 and 7 are now obsolete e New The Mesh Wizard now allows all three mesh types to be generated These types are trimmed with refinements tetrahedral and hybrid e New Multiple tetrahedral regions with different cell types automatically allocated to each region e New Batch based hybrid mesher replaces the previous version The hybrid me
53. er upping the TOLIN parameter of the CPCHECK command perhaps to 1 instead of the 01 default or by changing that number globally with the CPTOL command Second when starting from a custom mesh that already has some CPmatches in it under certain conditions ammbatch may alter these CPmatches ending up with an integral match with one master and only one slave These will also be rejected by the CPCHECK command but can be fixed using the following macro cpset news integral cpset subs nslave 1 vset news cpset vmerge vset n cpdel cpset v3102 516 Updates This release fixes the CPMATCH problems mentioned in the v3102 515 update above It also takes care of various installation problems that affected some of the initial release CD s With this version pro am and ProFE have been synchronized Either program can be run from this same release Patch release 516 contains a new methodology for fixing unresolved cells in trimmed cell meshes A panel called Remesh Region using TetFix has been specially developed to guide the user through a technique which can aid in the rapid fixing of problem areas The panel is located in the Generate Mesh gt Mesh Tools set of menus A full description of the method is contained in Chapter 6 of the User Guide and an example tutorial is provided in the Tutorial set A new simple to use Surface Wrapping panel has also been developed it is located in the Prepare Surfaces gt Create New Surfaces set of m
54. face modelling e Droplet break up models e The coal blend combustion model e Turbulence effects in Complex Chemistry models e User defined thermal diffusion coefficient Code and File Structure Changes Significant changes have been made to files created by STAR and pro STAR as follows e Asthe pstt rpo err and terr file formats have changed such files created under STAR v3 15 cannot be appended by STAR v3 2 Therefore such files should be deleted or re named e STAR v3 20 will read a v3 15 pst file for restart purposes but the new pst file written by STAR v3 20 can be only be read by pro STAR 3 2 Yeo adapco STAR CD Version 3 20 Release Notes In moving mesh applications grid changing command files must always have a cgrd file extension e The structure of both geom and prob files has changed since v3 15 such files should not be used in v3 2 runs Use of Switches and Constants A number of new features were supplied in the past as Beta features and were used under v3 15 via pro STAR Switches and Constants Users resuming from a v3 15 model file will find that these Switches and Constants are now reset automatically to their correct setting However users should still check the problem setup in case any settings have been missed Important Notes for STAR 9 1 Changes of Practice Stagnation boundary conditions a Turbulence effects are included in the definition of stagnation quantities If the user s
55. features are included in this release see also Chapter 6 in the Methodology volume e Hybrid wall functions are available that extend the low Reynolds number formulation of k k amp and Spalart Almaras turbulence models These may be used to capture boundary layer properties more accurately in cases where the yo adapco 1 7 5 7 5 8 5 9 STAR CD Version 3 20 Release Notes near wall cell size is not adapted for the low Reynolds number treatment and thus achieve y independent solutions e Anew non equilibrium wall function suitable for flows with non zero pressure gradients Combustion Models Several new combustion features are supplied as follows e A complex chemistry model that can handle multiple step reaction systems with detailed reaction mechanisms This model solves transport equations for all chemical species and takes into account the preferential diffusion of each species e A Laminar Flamelet model that takes into account non equilibrium effects and multiple reaction steps in non premixed combustion e The Weller 2 and 3 equation models for premixed and partially premixed combustion respectively Unlike the Weller 1 equation model these models account for non equilibrium effects by solving a transport equation for the wrinkle factor e A soot model to calculate soot production in engines and diffusion flames e A multi fuel PPDF model that handles non premixed combustion of two different fuels e Abili
56. fuel mass within the spd file will be incorrect for cases with multiple fluid streams 2 Transient load steps These remain available in pro STAR V3 2 but will eventually be phased out in favour of transient tables Users are advised to build any new transient analyses on the basis of tables Transient output values and controls 3 2 Yeo adapco STAR CD Version 3 24 Release Notes that are new to pro STAR V3 2 have not been generally made available for old style load steps Transient output control pro STAR V3 2 uses time units to specify the frequency of data output to pstt files whereas earlier versions use number of time steps Thus when resuming from an old model file the new style output frequency cannot be calculated if the time step size is not known Command scripts The end result of V3 2 command scripts may differ from that of the equivalent V3 15 commands even after all changes in parameters outlined in Appendix A have been implemented Users should therefore check their models carefully to see if any corrective action is needed Users upgrading other engine combustion cases from V3 15 should also be aware that there are important differences in the V3 2 implementation of Shell and 4 Step ignition models relative to V3 15 The default method of calculating specific heats for species is to use the specific heat polynomial coefficients defined in pro STAR To use the hard coded polynomial coefficients p
57. he buoyancy force is activated For some cases where both buoyancy and turbulence effects are large a smaller time step may be needed for numerical stability A default set of STAR PNP run options may be defined for general use and these may be tailored to site specific conditions Please refer to Appendix H of the User Guide for further information Users can avoid using the insecure rsh remsh and rcp tools when starting remote tasks or remote copying of files Any one of the alternative secure tools such as Kerberos or Secure Shell ssh may be used instead This option is defined by REMOTETASK and REMOTECOPY settings in the hardware ini file as in the following examples REMOTETASK ssh REMOTECOPY scp REMOTETASK usr kerberos bin rsh REMOTECOPY usr kerberos bin rcp This facility works by using a wrapper script to redirect xsh remsh and rcp calls to the alternative remote commands specified If you wish to select a more secure protocol as the method of authenticating remote connections you need to configure your environment so that no password or secret passphrase is needed to login to the remote nodes for parallel programs to work properly You are recommended to use the new MPICH 1 2 4 installations supplied with the STAR V3 24 solver Otherwise you must compile MPICH using the rsh rsh configuration option rsh remsh on HP UX to remove the hardwired remote command This is so that a single MPICH installation can support Ker
58. he plotting layers are stored as 3D primitives so the view can be changed with the data overlayed Release v3103 521 contains a number of bug fixes and some major enhancements to the ammbatch program and pro am es tools panels These include New Parallel mesh generation is now possible for all pro am es tools models when using user defined custom meshes Improved CPmatch generation has been improved Improved auto refine process when dealing with arbitrary custom meshes Improved smoothing algorithms to improve triangle and tetra quality Improved The Delaunay tetrahedral mesher now handles interior baffles This feature is activated by enabling the Internal Feature Cell Type option Improved The default subsurface method helps prevent self intersections and improves the quality of the cells in the extrusion layer In addition subsurfaces can now be put around a baffle Improved memory handling Specific enhancements for es aero and es uhood include Improved Added more checks to the geometry write in Analysis Setup gt Analysis Preparation There are now three levels of checking in the geometry write New Added option Component Wrap to the Mesh Wizard s Generate Custom Mesh This option allows a box to be built around a specified surface which then allows just the selected component to be wrapped New Added option Custom use Domain DBID to the Mesh Wizard s Generate Cus
59. ically these are e All bodies must be topologically connected across identical faces to form a single region of space e Two fluid domains cannot be in contact with one another e Each domain must be contiguous i e cannot consist of two bodies that are not in contact For more details on these rules please see the STAR Design user guide Version 3 20 cA NM
60. ing in the info file are reported on the basis of the fully implicit scheme s differencing molecule not the correct Crank Nicholson molecule The non adiabatic implementation of the PPDF combustion model may not give accurate results as far as species mass fractions are concerned Work is in progress to rectify this by modifying the code to compute both species mass fractions and temperature from the enthalpy obtained from the transport equation solution The modification will also allow treatment of multiple air or fuel inlets with the same composition but different temperatures using a single mixture fraction For streams of different composition however the multi fuel PPDF option should be used instead Rotating reference frame cases using a Reynolds Stress turbulence model fail to converge When the k SST model is applied to cases involving heat transfer in impinging flow regions the calculated heat transfer coefficients do not agree with experimental results at present The AMG solver requires that all mesh regions associated with a given material are connected Anumber of spray and wall collision models previously available under a SPEED license still require this license in order to run This limitation will be removed by the time of the next STAR CD interim release Yeo adapco STAR CD Version 3 20 Release Notes General HPC issues 1 Ze 3 STAR HPC runs are not feasible for problems involving
61. ing unblocking of executable programs or network ports You will need to keep the following unblocked 1 The supplied X server SCO XVision will trigger these warnings with Vision Services and X Vision 32 bit Server ii pro STAR components pro x exe pro xm exe pro glm exe stardesign prosurf e The CAD Plugin packages STAR Works STAR Pro E and STAR NX are not available in the STAR CD V3 22 installation Users requiring the CAD Plugin functionality need to continue using STAR CD V3 150A until these packages become available in a future release 3 STAR Features 3 1 New Developments 1 Chemical reaction modelling by means of the STAR KINetics package is now available under a special license A separate STAR KINetics Manual will be supplied to users of this package Note The STAR KINetics package is not currently available on the Microsoft Windows platform Windows support for the package has been deferred to a future STAR CD release 2 STAR CD s free surface and cavitation modelling capabilities have been extended to quasi steady state cases by means of the pseudo transient solution method relevant details are given in the new V3 22 edition of the User Guide When using this facility via the STAR GUlde interface please note that a The case has to be defined as Free Surface or Cavitation before selecting the Pseudo Transient solution option not the other way round b Only the default solutio
62. ion of time periods instead of the previous practice of defining load steps The use of load steps with these commands is still possible if after they are issued the user proceeds to set up the intended load steps from scratch 7 Command scripts The end result of v3 20 command scripts may differ from that of the equivalent v3 15 commands even after all changes in parameters outlined in Appendix A have been implemented Users should therefore check their models carefully to see if any corrective action is needed 4 2 Known Issues Liquid films The SMAP operation does not work for liquid films 1 4 Yen adapco STAR CD Version 3 20 Release Notes Transients 1 In the Analysis Output panel Transient Tab the scroll list jumps after each selection 2 The TSMAP operation used in transient cases restarting from a refined grid does not work at present HiRes screen dump Produces binary postscript files that may not work on old printers StarWatch StarWatch does not monitor the new field variables introduced with v3 2 e g Eulerian two phase Reynolds Stress and V2F turbulence models nor does it allow you to change the parameters relating to these variables For the older v3 15 set of variables it works on all platforms It can also be implemented without any editing of the etc services file In parallel runs it is possible that the STAR job may hang or crash when the user updates the control variables
63. is deferred to Version 3 22 2 Pre and Post Processing The standard STAR CD v3 20 bundle includes three tools in addition to pro STAR for use in setting up simulation cases These are introduced in the next three sections before presenting the new features of pro STAR v3 20 2 1 pro STAR Auto Mesh module pro am The pro STAR Auto Mesh module or pro am for short provides the user with a powerful meshing environment capable of handling complex grid generation tasks for the CFD solvers supplied by the CD adapco Group namely STAR CD Comet and STAR CCM It features capabilities such as new surface creation surface repair and subsurface generation plus a wide range of other tools and operations related to high quality mesh generation pro am is capable of automatically creating up to three different types of mesh Trimmed Hexahedral based mesh with trimmed type polyhedral cells Tetrahedral Tetrahedral cells Hybrid Hexahedral core with pyramidal and tetrahedral cells pro STAR can be started with or without the pro am capabilities To access these capabilities type proam or click the appropriate button on the STAR Launch interface see section STAR Launch on page 6 below Detailed Release Notes for pro am may be found in Appendix B of this document 2 2 CAD Import and Surface Meshing tool pro surf pro surf is a stand alone package designed to read CAD data from a file written in one of several supported formats
64. lan versions 4 Extensive testing of the solver for distributed memory problems is still in progress for the Windows platform Users who are interested in running with this configuration are therefore advised to contact CD adapco s User Support The following points should be noted in particular a Distributed memory STAR jobs need to be run over a dedicated network b Distributed memory moving mesh STAR jobs are not currently supported Note however that shared memory moving mesh jobs are supported c Users wanting to run distributed memory clusters comprising more than eight machines will need to install a server version of Windows 3 4 Batch running issues The STAR CD 3 2x solvers support all resource managers that are also supported by STAR NET 3 x 1 The latest STAR NET 3 0 3 supports IBM Loadleveler LSF OpenPBS PBSPro Sun Grid Engine SGE and Torque 2 The PBSPro and Torque resource managers are supported only in OpenPBS compatibility mode 3 STAR NET and queuing systems are not currently supported on the Windows platform 3 7 Yeo adapco STAR CD Version 3 24 Release Notes 4 User Documentation Further additions and corrections were introduced into the STAR CD documentation set As usual the latest edition is accessible either from the pro STAR Help menu for manuals or from STAR GUIde s Help button for context sensitive On line Help topics Users should note the following items 1 Two ne
65. ld be used instead Alternatively users may wish to use MPICH with shared memory communications disabled e g star mpi mpich noshmem hostname 2 Port specific HPC issues 1 Lagrangian multi phase cases running on IRIX MIPS platform using the SGI MIPS MPI may lose droplets as they pass between sub domains If this problem is encountered MPICH should be used instead 2 Linux runs using the default geometry decomposition method Metis decompose the model in a different way to that of other platforms This may produce results and convergence behaviour that are different to those for other platforms 3 The Discrete Ordinates radiation model does not work correctly in HPC mode for the OSF1 and HP UX platforms 4 STAR CD currently does not support any queuing systems on the Microsoft Windows platform as there is no STAR NET port for Windows 5 Extensive testing of the solver for distributed memory problems is still in progress for the Windows platform Users who are interested in running with this configuration are therefore advised to contact CD adapco s User Support The following points should be noted in particular a Distributed memory STAR jobs need to be run over a dedicated network b Distributed memory moving mesh STAR jobs are not currently supported Note however that shared memory moving mesh jobs are supported c Users wanting to run distributed memory clusters comprising more than eight machines will need to insta
66. linked executables based on shared objects The shared object executables introduce a new wrinkle on how pro STAR is executed and how pro STAR user subroutines are created by requiring a shared library path For users who start pro STAR pro am es Tools using the supplied shell scripts prostar proam esaero esuhood etc this has already been addressed within the shell script so there is no observable difference Users who have their own custom scripts or run the executables directly such as pro xm will need to set shared library paths properly Machines based on Compaq s Tru64 Unix Linux SGI s IRIX or Sun s Solaris will need to set the environment variable shown below LD_LIBRARY_PATH SSTARDIR pro 5LD LIBRARY PATH Hewlett Packard HP UX users will need to set SHLIB PATH STARDIR pro SHLIB_PATH IBM AIX users will need to set LIBPATH STARDIR pro LIBPATH The prolink script will now compile pro STAR user subroutines into a shared object user1 so or user1 s1 depending on the machine To properly activate this user compiled shared object the file will need to be placed in the current working directory where the user starts pro STAR Alternatively the directory where user1 so is located must be prepended to the shared library path If either one of these is not done pro STAR will default to the supplied user1 so in the SSTARDIR pro directory There have been many enhancements to the renderering and meshing capabi
67. lities of v3103 521 The rewritten OpenGL based accelerated graphics mode extended mode introduced in v3103 520 has been undergoing further development and optimization e Improved Extended mode now supports plotting of boundaries and splines rendering features that were previously available only in the standard X11 renderer non extended mode e Improved Faster plotting with the caching of view independent information This improvement comes at the cost of memory If memory usage is a problem the caching may be disabled with RENDEROPT MEMORY e New High resolution screen dumps see online help for HRSDump that allow arbitrary resolution screen captures of the extended mode plotting window This command produces high quality png gif or PostScript files For best results when printing high resolution images with text set the environment variable STARFONTO to a scalable font before running pro STAR e Improved Feature and silhouette edges of complex geometries can now be displayed with hardware acceleration in extended mode e New Beta Feature Plotting layers with the LAYER command This a A B 5 Previous Release Updates in chronological order command takes the current plotting primitives cells particle tracks etc and stores them in a layer for compositing arbitrary plotting objects Any number of layers may be overlayed to produce arbitrary combinations of plot types Unlike the OVERLAY command t
68. ll a server version of Windows Other port specific issues 1 IRIX port Users of IRIX systems prior to 6 5 19f should note that problems may be encountered compiling user subroutines if these subroutines reside on a file system NFS mounted from Solaris systems or from certain Linux systems all Reiserfs filesystems and ext3 on SuSE 8 2 A workaround will be introduced in the STAR CD 3 24 solver 4 4 Yeo adapco STAR CD Version 3 22 Release Notes 2 Solaris port STAR Launch may hang on start up if the user s home directory resides on a disk mounted on a Solaris 5 7 system 3 Windows port a The default STAR CD mode of operation is to use memory based scratch files On the Microsoft Windows platform however this may cause STAR to crash under certain circumstances Use the noramfiles option as a workaround b pro STAR may fail to generate an SMAP file on some Windows machines You may use the SMAP file generated by another platform as a workaround c Users with Windows XP Service Pack 2 or users who have a software firewall installed will encounter warnings regarding the blocking unblocking of executable programs or network ports You will need to keep the following unblocked i star 11 mpich related components mpirun mpd daemon 111 starwatch and starwatch daemon 4 User Documentation A number of additions and corrections were introduced into the STAR CD documentation set since hard copy manuals for Ve
69. lls except conducting walls adjacent to solid fluid interfaces b At conducting walls solid fluid interfaces the transmissivity at the solid fluid interface must be either 1 or 0 depending on whether radiative heat transfer through the solid material is to be considered If radiation in the solid is on the transmissivity at the solid fluid interface must be 1 otherwise it must be 0 c The discrete ordinates method may cause the warning Freeing unrecognized pointer to be written to the screen This can be safely ignored d In discrete ordinate analyses which involve partial domain radiation fixed heat flux boundary conditions should not be used on portions of the domain not involved in the radiation calculation The following issues concern liquid films a Droplets impinging on a film are not converted to film if the Lagrangian two phase solution procedure is set to Predictor Only b At present momentum transfer will always be active for liquid films 1 e the setting specified in pro STAR has no effect c Coupling between liquid film and gas phase follows the Lagrangian two phase setting Switch 123 can be used to decouple the liquid film from the gas phase when the Lagrangian two phase option is inactive d Liquid film wall data do not appear in the run file even when the user has specifically requested them When using the Crank Nicholson time discretisation scheme the mass energy and species fluxes appear
70. ly to the master node s info file All droplet information found in that file will appear in the merged info file The spd files found in the master directory contain global information and are copied to the top directory at the end of the run e The droplet condensation model is switched off by default former Switch 199 in v3 15 f In STAR v3 15 spray models the user was able to specify the fuel type injected Yeo adapco 1 11 STAR CD Version 3 20 Release Notes N Heptane N Dodecane or HMN The user also had to select User coding for the droplet properties subroutine DROPRO and call an internal function FUELEN from within the user code In the equivalent STAR v3 2 setup the droplet properties are set to Droplet properties will be calculated internally by STAR and user subroutine DROPRO is no longer needed since function FUELEN is automatically called by STAR To call function FUELFN from the DROPRO subroutine in STAR v3 20 variable IFTYPE should be set inside the subroutine as follows i IFTYPE 1 for N Dodecane ii IFTYPE z 2 for N Heptane ii IFTYPE 3 for HMN Numerical methods The Gamma convection discretization scheme is no longer supported For equivalent functionalities and capabilities please choose the MARS scheme STAR output a When reporting the CPU time in the run and info files the code now also reports the amount of dynamic memory used in Mbytes However this figure
71. n 3 24 number for the latest updates to hard copy manuals received under Version 3 20 3 8 Yen adapco STAR CD Version 3 22 Release Notes Version 3 22 Release Notes 1 Introduction Version 3 22 is an update of the STAR CD Version 3 20 suite offering several bug fixes and additional features that were not available in time for the initial 3 20 release Version 3 22 also represents the initial release of STAR CD 3 2X on the Microsoft Windows platform All notes relating to new features and specifications for Version 3 20 are also applicable to the Windows version apart from the exceptions specifically mentioned below 2 Important Notes for Pre and Post processing There are very few changes for pre and post processing A number of bugs have been fixed but very little else has changed 2 1 New Developments 1 The visualization tool from the STAR Design package can be used in stand alone mode to post process results from any STAR analysis It can be started from the STAR Launch interface select Pre Post gt STAR Design post in the menu bar or from the command line type stardesign post 2 The program formerly known as pro surf is now the CAD import and surface preparation module of pro STAR It can be started from the STAR Launch interface select Pre Post gt pro STAR surf in the menu bar or from the command line type prostar surf The surface module also has a new batch mode of operation which can be start
72. n algorithm SIMPLE should be employed for the CFD analysis 3 2 Windows specific Features 1 When running STAR PNP on the Microsoft Windows port NFS is not used Instead users must have permission to create mount delete network shared directories Users on the Windows XP platform must disable the simple file sharing option Mixed Windows 2000 and Windows XP clusters will need to have their security policies adjusted to match each other force guest should be removed 2 STAR Launch replaces the earlier Windows starlauncher application to provide a consistent user interface between UNIX and Windows On the latter 4 2 Yeo adapco 3 4 STAR CD Version 3 22 Release Notes platform STAR Launch is activated by clicking the STAR CD icon on the user s desktop The MPI timing option is not currently supported The STAR Launch tool includes an option to open a MSYS shell which provides users with a UNIX like Bash shell in the Help gt STAR Shell menu 3 3 Known Issues General issues 1 Ze The GT POWER interface has been deferred to the next STAR CD release There are two known issues concerning thermal radiation a The transmissivity for external walls must be set to O External walls are all walls except conducting walls adjacent to solid fluid interfaces b At conducting walls solid fluid interfaces the transmissivity at the solid fluid interface must be either 1 or 0 depending on whether radiative heat transfer
73. nc to access NBMAX and NCMAX 11 User Documentation As usual all documents are accessible either from the pro STAR Help menu including on line versions of the hard copy manuals or from STAR GUlde s Help button for context sensitive On line Help topics In addition most documents are also accessible from the STAR Launch Help menu option STAR CD Manuals Appendix A of this document contains a list of all significant changes to the pro STAR command set since Version 3 15A Yen adapco STAR CD Version 3 2 Release Notes Appendix A Summary of Command Changes As a result of changes to the code some commands have been created while others have been modified or deleted The following table provides a summary of all changes since Version 3 15A Where modifications are involved changes are further classified as Critical Modification meaning that old command files containing this command need to be edited in order to work properly Name Change a special category of modifications where the only change is a different command name Non critical Modification additions changes have been made to the command parameters or functionality but old files should still work unchanged Default Change the default values of some command parameters have changed Depending on how the command was used this may amount to a critical or non critical modification Detailed descriptions of the new commands are given in the Comman
74. now universal and may be applied to any material Buoyancy effects are activated separately for each material Please also note that the Gravity panel only defines the direction of the gravity vector but its effect won t be included in the calculation unless buoyancy is explicitly turned on in the Buoyancy panel 3 Cavitation Apart from the passive scalar VOF an active scalar called CAV and its boundary conditions are turned on automatically and their properties may need to be redefined If your problem involves only liquid and vapour it is advisable to switch off the Free Surface option in the Select Analysis Features panel 4 Transient load steps These remain available in pro STAR v3 20 but will eventually be phased out in favour of transient tables Users are advised to build any new transient analyses on the basis of tables Transient output values and controls that are new to pro STAR 3 20 have not been generally made available using old style load steps 5 Transient output control pro STAR 3 20 uses time units to specify the frequency of data output to files pstt whereas earlier versions use number of time steps Thus when resuming from an old model file the new style output frequency cannot be calculated if the time step size is not known 6 Mixing vessel problems Commands MIXASI and MIXVESSEL are still employed for automatic event generation in mixing vessel type problems but they now require the definit
75. ns d a boundary patch analysis data on the incident and transmitted radiative heat flux for a given patch as opposed to a given boundary region Please also note that a Patches generated by command BPATCH for use in the old radiation method cannot also be used for FASTRAC b The FASTRAC patch specification method is different from that for the old method Moreover the patches are not generated until after the view factor calculation procedure has been initiated by command VFCALC When FASTRAC is used for solar radiation cases only radiation incident on the active side of a patch is counted the active side of the patch is towards the fluid cell or away from the solid cell that it is attached to Thus the external surfaces of opaque wall boundaries exposed to solar radiation will not experience any heating If such heating is to be simulated users must represent the wall boundary either by a thin layer of solid cells and turn on conjugate heat transfer or by a baffle plus an additional layer of fluid cells on its outward facing side d Some STAR runs using the FASTRAC method might fail with the message wa c ERROR ABOVE PATCH WITH ZERO AREA BUT NON ZERO VIEW FACTOR This happens because the FASTRAC radiation pre processor sets the environmental patch area to zero if the calculated area is less than an internal tolerance This will typically occur in models where the cell sizes are small eg models built in meters
76. o wishes these may still be removed by turning on Switch 83 b Stagnation quantities and velocity direction are now decoupled 1 The velocity direction definition follows what has been specified in pro STAR in the past The stagnation quantities are defined in an absolute frame of reference by default 11 To obtain the same behaviour as in v3 150A Patch 16 onwards please set the Stag Quant option to Relative when choosing Relative for the Velocity option together with Specify for the Direction option Lagrangian multi phase cases a The default interpolation method for calculating continuous phase temperature velocity and species mass fractions at droplet locations has changed from using cell data to using gradients see page 12 31 in the Methodology volume b The default numerical algorithm for calculating droplet source terms for the gas phase is the same as in v3 15 and is referred to as Standard An under relaxation factor can now be specified via pro STAR in v3 15 the default under relaxation factor was 1 0 with alternatives being supplied by RCONS 34 c File spd can be written without a SPEED license it will be created automatically for cases involving either Lagrangian two phase flow or certain combustion models A separate spd file will be written for each fluid stream d For HPC runs injector information will be written to the info files on all nodes the droplet balance data which will be written on
77. on to disable look ahead as this is not a valid option for fork communication 3 2 Known General Issues 1 The following issues concern radiative heat transfer a For the Discrete Transfer method DTRM conducting walls solid fluid interfaces should have their transmissivity set to either 1 or 0 depending on whether radiative heat transfer through the solid material is to be considered If radiation in the solid is on the transmissivity at the solid fluid interface must be 1 otherwise it must be 0 Since the Discrete Ordinate method DORM does not support radiation in solids the transmissivity at the solid fluid interface must be set to 0 b The heat exchange between materials reported by STAR in the info file represents only the heat exchange due to conduction c Models with boundaries that have different thermal and solar transparencies the post processing quantity SRAD solar radiosity on the pst file is incorrect This does not affect the solution d When models containing boundaries with reflectivity 1 and warped cells are run in double precision a precision error in the code sometimes results in high temperatures at the reflective boundaries To avoid the problem set the reflectivity to 0 9999 or less yo adapco STAR CD Version 3 26 Release Notes e In models with boundaries that are fully transparent thermally but whose solar transparency is less than 1 0 the solar transparency is ignored 1 e the boundary b
78. ors on the local machine all that is now needed is to enter star 4 STAR PNP will automatically decompose the mesh copy all necessary files deal with any user coding and start the STAR job If the same case was to be run across two host machines the command would take the form star host_namel 2 host name2 2 There are several options available to the user which can be found in Appendix H of the User Guide or by typing star help at the command prompt Dynamic Memory Allocation STAR v3 20 uses dynamic memory allocation which means that a Fortran compiler is no longer required unless user coding is present Existing user coding may require some modification as described in Section 9 of these Release Notes STAR Launch STAR Launch is a GUI providing easy access to STAR CD components see Chapter 2 Using STAR Launch in the User Guide STAR Launch can launch the pre and post processing tools and run the CFD solver using STAR CD s PNP features STAR Launch can be activated by either typing starlaunch in your window s command line or clicking the STAR CD icon on your desktop Clicking the icon will activate STAR Launch on the local machine only Currently this icon is supported for the following operating systems e Linux running KDE and Gnome e HPUX AIX Solaris and OSF1 running the Common Desktop Environment Your systems administrator will install the STAR Launch software in the STAR CD installation direc
79. ould be used instead Lagrangian multi phase cases running on OSF1 Alpha platforms using HP Alpha MC MPI may fail with a segmentation fault If such a problem is encountered LAM MPI or MPICH should be used instead Linux runs using the default geometry decomposition method Metis decompose the model in a different way to that of other platforms This may produce results and convergence behaviour that are different to those for other platforms The Discrete Ordinates radiation model does not work correctly in HPC mode for the OSF1 and HP UX platforms If you are using Sun MPI on a single host which has been configured as part of a Sun cluster please use the STAR PNP noshmem option to force STAR to run on the correct machine The run may ramdonly fail otherwise Other port specific issues 1 Users of IRIX MIPS systems prior to 6 5 19f should note that problems may be encountered compiling user subroutines if these subroutines reside on a file system NFS mounted from Solaris systems and certain Linux system all Reiserfs file systems and ext3 on SuSE 8 2 STAR Launch may hang on start up if the user s home directory resides on a disk mounted on a Solaris 5 7 system Yeo adapco STAR CD Version 3 20 Release Notes 10 User Coding Most standard user subroutines from Versions 3 15 and 3 15A will require no modification for Version 3 20 Exceptions to this rule are noted below 10 1 New User Subroutines The following subroutine
80. outines take modified arguments as follows v3150A BCDEFF UINF VINF WINF PINF TINF v3200 BCDEFF UINF VINF WINF PINF TINF TEINF EDINF v3150A BCDEFI SCALAR U V W TE ED T DEN TURINT v3200 BCDEFI SCALAR U V W TE ED T DEN TURINT RSU V2P F2P v3150A BCDEFP UB VB PR TE ED T SCALAR TURINT v3200 BCDEFP UB VB WB PR TE ED T SCALAR TURINT Yeo adapco STAR CD Version 3 20 Release Notes v3150A BCDEFT UINE VINF WINF PINF TINE v3200 BCDEFT UINF VINF WINF PINF TINF TEINF EDINF v3150A CAVPRO AL AV PV SIGMA CONTANG v3200 CAVPRO AL AV PV TSAT HV AP v3150A CONDUC CON v3200 CONDUC CON CKNX CKNY CKNZ v3150A DROPRO DENDR CPDR HV PS SFTC DRVIS v3200 DROPRO DENDR CPDR HV PS SFTC DRVIS DRCOND v3150A FLUINJ FLUXLULVI WLTELEDLITLSCINJ v3200 FLUINJ FLUXLUL VI WLTELEDLTI SCINJ IPMASS v3150A INITFI U V W PR TE ED T SCALAR v3200 INITFI U V W PR TE ED T SCALAR XVEF2 v3150A UOMEGA AMBND OMEGA v3200 UOMEGA MAT OMEGA Also note the following v3150A POSDAT argument RESOR had dimensions 63 100 100 v3200 POSDAT argument RESOR has dimensions 89 100 100 The critical changes are BCDEFP CAVPRO and UOMEGA It is mandatory to upgrade these subroutines to reflect the modified arguments or functionality It is also advisable to upgrade the remaining subroutines in the list above to make use of the extra arguments A number of subroutines have extra functionality as a result of introducing
81. problems associated with converting the CAD data into IGES and then trying to obtain clean CAD data from it Catia V4 Files saved from Catia V4 with the extensions dlv export and model are all supported by the Catia V4 CAD reader Currently only the first model in the file is imported into pro surf Catia typically uses a much higher curve tolerance 100 times the point tolerance than is the default in pro surf 2 5 times the point tolerance The point tolerance may need to be increased to get the proper amount of automatic repair The desired result is to have the lowest point and curve tolerances which still allow for repair of the CAD data Catia V5 This reader is a completely separate reader from the Catia V4 reader due to the substantial differences in the two versions The reader is designed to read Catia V5 files with CATPart CATProduct and cgr file name extensions Unigraphics Files from Unigraphics Version 15 0 and higher should be supported by the Unigraphics CAD file reader If an error is encountered during conversion of the solids you are recommended to enable the Read solids as faces option on the Import Unigraphics File dialog Pro ENGINEER Files from Versions 18 0 to 2001 of Pro ENGINEER are supported by the Pro ENGINEER CAD file reader When using the Pro E file chooser either the part or assembly file extensions can be filtered for import The TTF CAD readers are not currently available for the DEC Compa
82. q Alpha platform and the position regarding the SGI mips3 platform is still to be confirmed The OpenGL HP UX 11 version of pro surf now contains TTF CAD readers and the native CAD file readers are also working properly in the Mesa version pro surf executables for the HP UX Itanium2 platform do not contain CAD readers since there is currently no TTF CAD library for this processor However the HP UX 10 20 and 11 00 versions should run on the Itanium platform The STEP file reader is available and users should contact their sales agent if they would like to purchase the optional module for reading STEP files Version 3 20 cA TM TTF CAD Reader Licence Instructions TTF CAD Reader Licence Instructions The CAD readers are licensed separately from pro surf so additional licences are required before CAD file import can be processed Unfortunately the CAD readers are currently only available with node locked licences Use one of the following commands to determine the licence ID for the appropriate platform Platform Command to determine system ID Linux ifconfig ethernet hardware address IRIX sysinfo s AIX uname m Solaris hostid HP UX uname 1 Windows ipconfig all ethernet physical address The CAD reader licensing has changed in the current version of pro surf to support the new TTF Group CAD library bundling of modules If you have CAD reader licences for previous versions of pro surf you will need to contact CD
83. ration A history of parameter changes can be kept and used to rerun an analysis with the same changes taking place at the same iteration File Compatibility e Model mal files from older pro STAR versions v3 15 and below should be readable in v3 20 However in cases where the data now required have changed significantly particularly in the Free Surface and Chemistry areas the data may not always make perfect sense in the new setting Users should therefore look through the information retrieved from older pro STAR versions very carefully see section Changes of Practice below An effort has also been made to read pro STAR Switches and Constants from older files and translate them into v3 20 features where possible Users should therefore be very careful when using such facilities as the same Switches and Constants in v3 20 may have a different meaning compared to v3 15 e The geom prob and parm inc files written by pro STAR have all changed Users must write all STAR v3 20 solver files from pro STAR 3 20 and not reuse old ones e The pst and pstt files of v3 20 are completely new and different from older files pro STAR and STAR can read older files but will write all files in the new format 4 Important Notes for pro STAR 4 1 Changes of Practice Several modelling facilities have been extensively re designed as compared with v3 15 Users should therefore check carefully that a previously created model is correctly and
84. reviously employed in V3 15 for these models users have to turn on Switch 164 Option Use Heat of Reaction in the Reaction System STAR GUlde panel is valid only when the pro STAR defined specific heat polynomial coefficients are used When the hard coded polynomial coefficients are employed Constant 96 becomes valid and may be used to specify the heat of reaction Other Developments 1 A new procedure for coupling STAR CD to Gamma Technologies GT SUITE GT POWER GT COOL GT FUEL has been implemented through STAR PNP The interface requires STAR CD V3 24 or later and GT SUITE V6 1 or later Further information is given in Chapter 10 of the Supplementary Notes Note that a Three platforms HP UX Linux Itanium and SunOS require patches to GT SUITE V6 1 before they can be used for STAR GT SUITE coupling b The Windows port has only been validated against V6 1 c The Windows environment variable GTIHOME will need to be checked All path backslashes need to be escaped with a backslash e g C gti will not work it must be C gti Anew procedure for coupling STAR CD to Ricardo s WAVE code has been implemented as a plugin to STAR This is available as part of the default STAR CD installation together with a User Guide that is accessed through the pro STAR Help menu All standard UNIX and Linux ports of STAR CD are supported although extra RSimlink libraries may be required see the User Guide for more information Th
85. rsion 3 20 were printed in March 2004 As usual this new edition is accessible either from the pro STAR Help menu for manuals or from STAR GUlIde s Help button for context sensitive On line Help topics Users should especially note the following items e Details of the MPI nozzle flow atomisation and droplet wall interaction models are given in Chapter 12 of the Methodology volume e The four step Diesel ignition model is described in Chapter 11 of the Methodology volume e Appendix H of the User Guide contains a description of STAR batch runs under the currently supported queuing systems LSF OpenPBS and Sun Grid Engine e The free surface and cavitation model theory and usage instructions Methodology Chapter 14 and User Guide Chapter 15 respectively have been revised e The Index in both the User Guide and Methodology volumes has been updated to include references to new V3 20 features Users are advised to check the on line version of all documents which now carry the new Version 3 22 number for the latest updates to hard copy manuals received under Version 3 20 4 5 Yen adapco STAR CD Version 3 20 Release Notes Version 3 20 Release Notes 1 Introduction Version 3 20 is a major new release of the STAR CD suite offering greatly enhanced capabilities in both the pre and post processing areas and in the scope of CFD problems that can be modelled The release covers Unix and Linux ports the Microsoft Windows port
86. s Thermal conductivity in solid materials may vary according to coordinate direction see Conduction and conjugate heat transfer on page 1 6 of the Methodology volume for more information 5 15 Tables for Sources and Initialisation STAR v3 20 will accept mass momentum energy and scalar sources defined using tables associated with materials or cell types Tables can also be used to initialise field data in a similar way see Chapter 2 Table Manipulation in the User Guide for further details 5 16 Radiation Features Major developments in this area are e Anew radiation modelling capability based on the Discrete Ordinates method has been implemented Further details are given in Chapter 9 Radiation in Participating Media in the Methodology volume and Chapter 2 Radiation Modelling Using Discrete Ordinates in the User Guide e For the non participating Discrete Beam radiation model users can now a Obtain detailed information on radiative heat transfer between boundary regions b Print information about those patches that contribute most of the incident radiative heat flux on a specified patch STAR Beta level Features A number of CFD modelling facilities are available on a Beta level basis Outline descriptions plus instructions on how to use them are given in the Supplementary Notes document These features are listed below e Radiation model extensions e Detached Eddy simulation e Advanced free sur
87. s or from STAR GUlIde s Help button for context sensitive On line Help topics Users should note the following items 1 Numerous changes were introduced throughout the documentation to cover the FASTRAC view factor calculation method The chapters affected are a Methodology Chapter 9 b User Guide Chapter 7 new surface radiation property definitions c User Guide Chapter 11 overview of how to set up radiation calculations A number of on line STAR GUlde Help topics and the User Guide and Methodology indices were also updated Chapters 5 and 9 of the Supplementary Notes volume were revised to incorporate the new coal blend and engine combustion simulation facilities respectively A revised description of LES models was introduced in Chapter 2 of the Methodology volume The section on coal modelling in Chapter 12 of the User Guide was extensively re written to include detailed information on setting up such models Tutorials 12 1 and 12 2 were modified to employ the new view factor calculation method described above Users are advised to check the on line version of all documents which now carry the new Version 3 26 number for the latest updates to hard copy manuals received under Version 3 20 2 8 Yen adapco STAR CD Version 3 24 Release Notes Version 3 24 Release Notes 1 Introduction Version 3 24 is the latest update of the STAR CD V3 2 suite offering some bug fixes and a number of addi
88. s are introduced in this version BCDEFR Boundary condition definition for Riemann invariant boundaries BCDNRP Boundary condition definition for non reflecting pressure boundaries BCDNRS Boundary condition definition for non reflecting stagnation inlets COALC User char combustion model COALV User devolatilisation model COLLDT Detect whether a collision occurs or not COLLND Calculate droplet number density for collision calculations DROBRK Droplet break up FDBRK Film droplet secondary break up model FSEVAP Rate of evaporation condensation in free surface flows FSTEN Surface tension and contact angle in free surface flows LFPROP Liquid film physical properties PARUSR User particle source RADMAT Radiation band properties Discrete Ordinates Radiation RADREG Non grey boundary properties Discrete Ordinates Radiation RATUSR Turbulence effects in complex chemistry models REACUL Chemical reaction rates for complex chemistry models THDIFF Coefficient of thermal diffusion UEDRAG Specify drag force Eulerian Two Phase UEHEAT Specify Nusselt number Eulerian Two Phase UETURB Specify turbulence response function Eulerian Two Phase 10 2 Removed User Subroutines OMGDEF has been removed Its functionality is now combined with UOMEGA UFDE2P has been replaced by UEDRAG and UETURB 10 3 Modified User Subroutines None of the internal variables in existing user subroutines have been renamed or removed However some subr
89. se problems have not been found to effect STAR on the Itanium and AMD64 versions of RHEL3 however Red Hat recommends that the patch mentioned above is applied to all RHEL3 systems 3 3 Known HPC issues 1 Running STAR in parallel is not feasible for cases involving a The Discrete Transfer radiation model with participating media for such cases users are advised to use the Discrete Ordinates radiation model b Solar radiation unless the FASTRAC method is used to calculate view factors 2 Currently the AMG solver can run with a maximum of 256 processors 3 In Lagrangian two phase cases where the number of parcels is approximately equal to or greater than the number of cells the following message may be reported on screen Out of space on attached buffer and the run subsequently stops This is related to the MPI implementation being used If you encounter this problem please contact CD adapco s User Support for information on how to overcome it 4 Cases running MPICH 1 2 4 and the Shared Memory Communication device are unreliable and may fail If this problem is encountered a different MPI implementation should be used instead Alternatively the user may wish to use MPICH with shared memory communications disabled e g star mpi mpich noshmem hostname 2 5 When using the FASTRAC view factor calculation method for models containing conjugate heat transfer interfaces or baffles the latter must not lie at the interface betwe
90. sh is now generated in one go and does not require a core mesh from a template e New Extrusion layer generation is now fully automatic and does not require user interaction to create the extrusion surface e New Specification of wall thickness of near wall cell layers e New Specification of local surface properties for extrusion mesh generation allowing the number of layers and grid spacing to be controlled on a surface by surface method e Improved Surface wrapper with additional levels of control e Improved CPmatch generation for trimmed cell meshes and reduction of unresolved cells for complex geometries e Improved and extended GUI panels for template mesh generation and extrusion layer generation e Improved Documentation including a new Advanced Mesh Wizard tutorial Previous Release Updates in chronological order Version 3 20 v3102 515 Updates As of this date we have found two problems that may be circumvented with user intervention First ammbatch organizes and labels integral and arbitrary CPmatches separately When running the CPCHECK command on integral CPmatches the tolerance for comparing the sum of the slave areas with the master area is quite tight Even small amounts of warpage in the master face may throw off a NA B 1 Previous Release Updates in chronological order B 2 this number slightly resulting in large numbers of warning messages This can be circumvented by eith
91. t be done differently from STAR Design 3 15 The two biggest changes for users experienced with STAR Design 3 15 are a NA Important Notes D 2 1 Materials are no longer associated with individual bodies Instead bodies are assigned to domains to which material properties are then assigned For single body single domain cases this simply means that the material should be assigned by selecting the Fluid domain in the Domain Tree and modifying the Material property Boundary conditions are no longer associated with individual faces Instead faces are assigned to boundaries to which actual boundary conditions are then assigned In addition to supporting the new multi body physics in this release this also allows multiple faces to be grouped together into a single boundary so changes to the boundary s properties affect all assigned faces New boundaries are created by selecting the BOUNDARIES placeholder in the Domain Tree and pressing the Add button These boundaries can then be assigned to faces by selecting the faces in the graphics window and pressing the Assign button For a more detailed description of these features please consult the STAR Design Users Guide or Tutorials Important Notes 1 Here is the list of the currently supported operating system names and versions HP UX 11 0 64 bit and 64 bit Itanium AIX 4 3 32 bit Linux 2 2 32 bit IRIX64 6 4 32 bit SunOS 5 8 64 bit Windows 2000
92. tes Status Critical Modification Non critical Modification Default Change Deleted COMSET CRMODEL DILUTANT FLCO FLCP FLDELETE FLGENERATE FLKV FLPLOT FLR1 FLR2 GFTB HRCO IGN2 IGNMODEL KNOCK MIXFRACTION NOX REHT SBREACTION SOOT TBIN TWOIGNITION POST GETBOUNDARY GETCELL GETUSERDATA GETVERTEX Yeo adapco A 9 Module Command STAR CD Version 3 2 Release Notes Status Name New Change Critical Modification Non critical Modification Default Change Deleted GETWALL OPERATE PTOPTION GRAPH EDGRAPH EDLOAD GDATA GMARK GPOST GRDISPLAY GTRANS EULERIAN EBODY EBRMONITOR ECNDUCTIVITY ECSMONITOR EDENSITY EDRAG EEDGRAPH EEDLOAD EGEBOUNDARY EGECELL EGEVERTEX EGSTAR EGTRANS EHTRANSFER EINIT EINTERNAL Yeo adapco Module Command STAR CD Version 3 2 Release Notes Status Critical Modification Non critical Modification Default Change Deleted ELVISCOSITY EMOLWT EMOMENTUM EMPHASE EPCP EPHASE EPLIST EPLV EPOK ERDEF ERELAX ERESIDUAL ERLIST ERMODIFY ERTPRESSURE ESIZE ESOLVE ESPECIFICHEAT ESWEEP ETEMPERATURE ETURB RADIATION VFCALC Y
93. tforms without requiring a license and allows you to rotate and zoom previously stored images The viewer can be started by typing starview Images can be prepared in pro STAR using the SCENE command or by employing the Write STAR CD Scene File option available under the Utility menu Particle tracking has been extensively re written Additional options are available for describing particle starting points and for restricting particles to within Yeo adapco 1 2 STAR CD Version 3 20 Release Notes a small distance of a surface to simulate oil streaks Particle tracking within OpenGL can be especially effective when translucency and lighting is applied to exterior surfaces Boundary specification facilities have been rationalised All options present in the Boundary Tool of v3 15 have been moved into STAR GUlde mostly under panel Create Boundaries As a result the Boundary Tool has been removed from the interface The scope of tables as a medium for data input has increased There is a very considerable increase in the number of facilities for defining plotting importing and exporting tabular data e The STARWATCH utility The existing option for watching residuals in real time has been extensively rewritten and the utility now allows users to modify a number of parameters residual tolerances under relaxation parameters etc on the fly The analysis then uses the updated parameters at the beginning of the next ite
94. the Eulerian Two Phase capability Please consult Chapter 18 of the User Guide for more information 10 4 Guidelines for Upgrading User Subroutines to Version 3 2 The following steps are recommended when upgrading user subroutines to the current version Ensure the subroutine is still supported see above e Ensure the arguments are complete and correct see above e Ifthe subroutine contains user defined arrays with case dependent size it will need modification e Ifthe subroutine makes use of any STAR common blocks it may need modification The reasons for the last two steps are e STAR v3 2 uses dynamic memory e Some of STAR s common block names have been changed User Defined Arrays Regarding the declaration and use of arrays no action is necessary when the arrays have Yeo adapco 1 17 STAR CD Version 3 20 Release Notes fixed size e g DIMENSION AUXVEL 3 For arrays whose size depends on model parameters e g number of cells consult section New Coding Practices for Dynamic Memory in Chapter 18 of the User Guide STAR Defined Arrays Please contact User Support for the new names of STAR common blocks and additional information about changing these blocks to use dynamic memory As an example of the dynamic memory style of common blocks the new way of referring to the array U 3 NBMAX NCMAX is POINTER P_U U 3 NBMAX NCMAX COMMON DCO2C P_U It is no longer necessary to include file parm i
95. tional features that are not available in the previous V3 20 and V3 22 releases 2 Pre and Post processing Features 2 1 New Developments pro STAR now includes an option for bringing up the IC Internal Combustion Setup tool To access this facility the user must start pro STAR in auto meshing mode prostar amm The new panel can be displayed by selecting the Automesh gt IC Setup option from the main window s menu bar 2 2 Known Issues 1 Linux ports a b c There is an incompatibility between the extended mode glm driver in pro STAR and certain NVIDIA drivers Specifically versions 1 0 5336 and 1 0 5328 of the NVIDIA drivers are known to cause the X server to crash upon exit from pro STAR This issue was partially resolved in V3 22 but may still occur in some rare instances and cannot be completely resolved without changing drivers The NVIDIA 1 0 4436 drivers are known to be completely compatible with pro STAR Linux64_2 4 Itanium systems Due to restrictions imposed by the Parasolids kernel STAR Design is a 32 bit application and will not run on these systems unless 32 bit compatibility libraries are installed On some systems where compatibility is provided STAR Design performance may be poor Linux64_2 4 x86 Opteron systems Systems that are configured to support Unicode by default the LANG environment variable is set to e g en_US UTF 8 or en_GB UTF 8 will issue warning messages when running pro
96. tom Mesh This will use a pre generated custom mesh for surface wrapping New es aero now supports plotting of drag data from the Plot ERD data option Improved The ground contact patch procedure has been improved New It is now possible to visually see leakage areas in wrapped surfaces with the Show Leakage button New Steady state aeroacoustic calculations can be activated in the es aero panel New The KE SST turbulence model can be activated in the es aero panel New Added Resurface option to es uhood s Prepare Surface gt Surface Tools P panel This option improves the triangulation quality of wrapped surfaces New Added Fan Template and Heat Exchanger Template panels to Template Generation in es uhood These will generate a local custom mesh for fans and heat exchangers Version 3 20 Fa A Important Points Appendix C CAD Import and Surface Meshing Version 3 20 Release Notes The pro surf tool provides a means to import CAD data repair common problems and mesh the surfaces in preparation for volume grid generation It serves as a much improved replacement to the current CAD import facilities available in pro STAR pro am This release supports reading of CAD data from either IGES or VDA FS files or with one of the add on CAD file readers directly from CATIA V4 CATIA V5 Unigraphics STEP and Pro ENGINEER files pro surf includes a suite of autom
97. tory but users may need to install the STAR CD icon for their own desktop environment The following three possibilities exist for installation of the icon 1 The systems administrator can arrange for the STAR Launch icon to be installed automatically during the STAR CD software installation stage see the Installation 1 6 Yeo adapco 5 4 5 5 5 6 STAR CD Version 3 20 Release Notes and Systems Guide A STAR CD icon will then appear automatically on every desktop when the user runs STAR Launch for the first time 2 If the software administrator does not provide for automatic installation of the icon users will be asked if they want to install it on their desktop when they run STAR Launch for the first time 3 The user can install the icon at any time by typing starlaunch icon To uninstall the STAR CD icon from your desktop type starlaunch noicon Eulerian Two Phase STAR v3 20 marks the first release of Eulerian two phase modelling as a fully supported feature Laminar and turbulent thermal and isothermal flow calculations are possible on all mesh types using the SIMPLE solution algorithm for steady state and pseudo transient simulations and the PISO algorithm for transient simulations The two phases can be gaseous liquid or solid without restriction on the range of volume fractions The phases are coupled through momentum and heat exchange terms that are calculated from a range of submodels including ones supplie
98. transmissivity for external walls must be set to 0 In this instance external walls are defined as all walls except conducting walls adjacent to solid fluid interfaces b For the Discrete Transfer method DTRM conducting walls solid fluid interfaces should have their transmissivity set to either 1 or 0 depending on whether radiative heat transfer through the solid material is to be considered If radiation in the solid is on the transmissivity at the solid fluid interface must be 1 otherwise it must be 0 c The heat exchange between materials reported by STAR in the info file represents only the heat exchange due to conduction 2 The following issues concern liquid films a Droplets impinging on a film are not converted to film if the Lagrangian two phase solution procedure is set to Predictor Only b At present momentum transfer will always be active for liquid films 1 e the setting specified in pro STAR has no effect c Coupling between liquid film and gas phase follows the Lagrangian two phase setting Switch 123 can be used to decouple the liquid film from the gas phase when the Lagrangian two phase option is inactive d Liquid film wall data do not appear in the run file even when the user has specifically requested them 3 When using the Crank Nicholson time discretisation scheme the mass energy and species fluxes appearing in the info file are reported on the basis of the fully implicit scheme s
99. ty to define two different ignitions e An option to use the heat of reaction for relevant combustion models Further details are given in Chapters 10 and 11 of the Methodology volume and Chapter 12 of the User Guide Material Properties Additional polynomial forms are available for thermal conductivity molecular viscosity and diffusivity plus an option to calculate them using kinetic theory see Chapter 1 Mixture properties in the Methodology volume Lagrangian Two phase Flow Major developments in this area are e Heat transfer between wall adhering droplets and the wall boundary can now be accounted for e The turbulent dispersion model has been re implemented and enhanced Generally particle diffusivities will be higher than in previous versions of STAR e Probability density functions can be used to generate droplet diameter distributions for explicitly defined parcel injection e Collision model A faster collision algorithm has been implemented for the O Rourke model along with several options for improved modelling These include a user definable collision detection method an optional coalescence timescale and a cell clustering methodology for optimising the computational effort required in detecting inter droplet collisions Note however that in HPC runs such clusters should not straddle inter processor boundaries Further details are given in Chapter 12 of the Methodology volume and Chapter 13 of the User Guide
100. uations thus completing a PISO loop Several substeps may be required before the original user time step is complete Essentially the substep is the true time step driving the overall solution The original time step specified by the user is now only used to determine the points at which data should be written to the pstt file The user time step will be taken into account if the user attempts to ABORT a free surface calculation as the code will continue running until the end of the user time step before it stops The overall calculation time will also be set by the user time step The info file will now show data on substeps within the normal user time step The Yeo adapco 1 12 9 2 STAR CD Version 3 20 Release Notes number of VOF calculations subcycles is also shown in the info file Reg oe aa I Substep time l v el User timestep Figure 1 Illustration of the new practice in free surface flows The STAR Toolchest This release supports the new Toolchest approach for interaction with other codes such as es tools Whereas previously this interaction would have taken place through user subroutines STAR now supports plugins i e pre compiled code that becomes part of STAR s Toolchest library Material properties The material properties database props dbs now contains separate entries for commonly occurring fluids that may be present in either the liquid or the vapour gaseous phase
101. w chapters describing the additional engine combustion simulation packages now available under STAR CD were added to the Supplementary Notes Chapter 8 covers the ERC package Chapter 9 the ECFM package A detailed description of how to use STAR CD in conjunction with one of the GT SUITE packages is now included in the Supplementary Notes Chapter 10 Additional Useful Points applicable to complex chemistry and ignition models were added to Chapter 12 of the User Guide The LES turbulence model description in Chapter 2 of the Methodology volume has been extensively revised Appendix H of the User Guide contains an updated description of STAR batch runs under the queuing systems currently supported by the latest STAR NET 3 0 3 IBM Loadleveler LSF OpenPBS PBSPro SGE and Torque Four new tutorials were added to the Tutorials volume a Tutorial 16 3 is an Eulerian two phase simulation of a fluidised bed of the type used in fluidised catalytic crackers b Tutorial 16 4 is an Eulerian two phase simulation of boiling in a channel flow c Tutorial 17 1 is a 2D simulation of a liquid film drop flowing down a vertical wall d Tutorial 17 2 is a 3D simulation of liquid film formation and transport due to spray impingement on a wall The Index in both the User Guide and Methodology volumes has been updated to better reflect the new V3 2 features Users are advised to check the on line version of all documents which now carry the new Versio

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