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User Guide Version 6.0 - RWTH Aachen University

1. MICRESS User Guide Volume Ill Post Processing 32 70 Chapter 4 DP_MICRESS Front tracking allows for tracking the evolution of a value in space and time Give a value to be tracked and press the ENTER key The corresponding scan is displayed in the graphics window e Scan point tracks the value at a scan point along time Important Virtual EDX of different solutions may be difficult to compare For comparison consider carefully which solutions to plot Normalising the solutions may be helpful Virtual EDX field value solid um 90 100 150 Figure 4 20 The two dimensional concentration output for the last time step of Delta_Gamma top left and a scan green above the dendrite tip in the liquid state results in a virtual EDX for both elements top right being sketched schematic bottom MICRESS User Guide Volume Ill Post Processing 33 70 RG Chapter 4 DP_MICRESS 4 2 16 Virtual EDX output Using the option virtual EDX output fig 4 21 the different types of output can be generated However it is important to actually create data first with virtual EDX before choosing the create output option e virtual edx scan position for current time step generates an image including the scan line for current time step at a path specified by the user e virtual edx scan position for all time steps virtual EDX text output From current time step r t generates imag es including the sc
2. MICRESS User Guide Volume Ill Post Processing C Chapter 4 DP_MICRESS 4 2 8 Setting view options The option view fig 4 9 has the features e set nb of panels allows for shuffling of Next several results into columns and rows The Boshi number of panels describes the amount of plots allowed per line and row If you enter 3 Jump for horizontal and 1 for vertical and use a _Dissociated Scale row major order results in a configuration like fig 4 10 Toggle between previous and next to choose which two consecutive plots shall be displayed Set nb of panels v p e freeze panel this function is disabled Freeze panel wat l l Replot v r e replot replots the display e g following a Auto replot on off v q Resize 5 param eter chan ge Auto resize onjoff v 2 i i Annotations v a e auto replot on off automatic replotting Orientation LIR lt gt BIT nal Increase thickness of colour scale v t e resize and auto resize on off automatic Black lt gt white en Enhanced 1D on off v l resizing Display temperature at the bottom v k Figure 4 9 The DP_MICRESS control panel view e annotations you can choose which annotations to display or whether not to display annotations at all by using this button There are four different modes of displaying annotations available which can be addressed by multiple clicking this option e orientat
3. 4 dae ee Cer m e y 0 20 40 60 280 Distance urn Figure 8 4 Generating virtual EDX output for selected time steps MICRESS User Guide Volume Ill Post Processing RE Chapter 8 Post processing Exercises 8 4 Read multiple result files This example demonstrates how to treat multiple result files at a time First read simultaneously the result files for the concentration fields of C and Mn and the phase distribution Delta Gamma _conc1 mcr Delta Gamma _conc2 mcr and Delta_Gamma_phas mcr For that purpose select the three files in the DP_MICRESS window when starting DP_MICRESS The three result files will be displayed in the same graphic window see Figure 8 5 top You can also zoom in simultaneously on all displayed results For that purpose use the option Display gt Zoom in after having plotted simultaneously all results of interest see Figure 8 5 bottom Figure 8 5 Finding the relevant details Simultaneously zoom in on all displayed results MICRESS User Guide Volume Ill Post Processing RG Chapter 8 Post processing Exercises In order to have the three panels in a horizontal line go to View gt set nr of panels and enter 3 for horizontal and 1 for vertical Zoom in at all results simultaneously with Display gt Zoom in You only need to select the zoom range on one of the plots and you will automatically zoom in the rest of them Next try to navigate the three
4. Figure 4 2 Details about how to alter the appearance of this window will be given in the respective chapters below Figure 4 2 Visualization of the example Delta_gamma_intf mcr interface output for the first middle and the last right time step The actual time step is shown in the upper left corner of each figure The lower left corner gives information about the displayed field type of result Information about the domain size is given in the insert The domain size in micrometers is given by the number of cells in x y and z directions see e g Fig 4 2 insert multiplied by a scaling factor e g Ium cell which is defined in the driving file To obtain the real dimensions of the domain a scale bar option can be used MICRESS User Guide Volume Ill Post Processing Chapter 4 DP_MICRESS 4 2 2 The operating window The operating window of DP_MICRESS Figure 4 3 pops up automatically and helps to process and visualise the selected output file It provides useful hints on selected functionalities Following the instructions given in this operating window will often facilitate work Also some special results are displayed here Examples are e g the distance between two points the value of an angle the angle between a line and its horizontal etc Points distances and angles to be measured are defined directly by the user on the displayed graph Keep an eye on the output in the operating window while proc
5. difference of two results d d Logarithmic display of result s d n sym m eiry ee Be er d a Toggle on and off display of raster d r e nine folded symmetry selects a 9 fold symmetry Isolines e symmetry type select symmetry type translational symmetry or mirror symmetry eae Virtual EDX output Data informations Miscellanea see Figure 4 13 for some examples of symmetry operations Figure 4 12 The DP_MICRESS control panel view original 3 fold 4 fold 9 fold 4 fold mirror 4 fold translation image symmetry symmetry symmetry symmetry symmetry Figure 4 13 Different symmetries activated in DP_MICRESS The result file shown here is Delta_Gamma_phas mcr at t 50 s MICRESS User Guide Volume Ill Post Processing RG Chapter 4 DP_MICRESS 4 2 11 Handling isolines The option isolines fig 4 14 has the features e display isolines shows hides pre defined isolines see fig 4 15 D SEN FT i i ae Next e label isolines creates labels for the individual _ isolines Display isolines i d e auto isolines activates preset isolines see fig Label isolines i 4 15 Auto isolines Add n auto isolines i n e add n auto isolines adds a number of n own Add an isoline ita isolines Remove an isoline i r Remove all isolines i s e remove an isoline removes a selected isoline Display contours i c a on Print isolines values i v e remove all isolines removes all isoline
6. DS ea een een A 12 BISSCOO 11 8 P E een ee einen ec een nenne 17 distance between two POINES ccccccccseeeccceecaeeeeeeeeeaeeeeeeeeeaseeeceeessaeeceeessaaeeeeeessaaseeeeessaaeeeeesssaeeeees 36 ET EN ee ee Eee EEE A E E EE 36 DS EEE seine ce EN BON EI EIER a ls tet tee ioe ctl series E e esate de RE EE ENSEEREEREIFHEHEE 17 SON OS nee oe ee er he ea ee AE ee eae ee eee ee ee 26 Jump to time step specified by its number eeunessnnssnnneennnennnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnennnnnnnnnn 17 AS PEA EE EE ee ee ee ee 17 CAS I QO engeren en een 36 Miscellanea and exit uuessssnneesssnnnennnnnnnennnnnnennnnnnennnnnnnennnnnnnnnnnnnnnnnnnnnennnnnnennnnnnennnnnnnnnnennnennennnnn 38 DER sn an EEE neh Bra ende EE E BE DO neuen eat dine ante an Diese Tea agen en 17 open result HN On nenne Eee eEE 58 OUMU EEE deers pn enema pen eo pate euen eae EE A 30 pick time step to jump to with a graphical INTELTACE cccccceecccececeeeeeeeeeeeeeeeeeeesaaeeeeeesaeeeeeseeaaaaes 17 PION cite aricon tienda neicnnatnneabentinadtaannacsaieetl sigueanedeannctetandanandnabents tainesieReahendanhdnesuandrauestn belexanedesventiedaernemtvsusabeaes 60 Jaa VIOUS zer PE E A rer enter een 17 Opon OU DU INE rennen ae ee ee ee ren re ee 17 POS UL OR et an aa ee ne Re ee ee ee ee 58 SCA a SEEN ENDE ER EN BEI EUR NE EEG RENNER REINE ENSAUEEWE EEE BE TANDRINNE 18 Spa 02 la 0 2 0 ZERUBEREPENERFEBEREBEEFELREEPEFUEFSEEEFLERTERRFUERESPEILTRRCERTUER
7. Non native binary result Display MICRESS Figure 4 1 The initial window of Display MICRESS MICRESS User Guide Volume Ill Post Processing Chapter 4 DP_MICRESS Command Line C cd Desktop Results_Delta_Gamma CA DP_MICRESS Delta_Gamma_intf mcr Display MICRESS can also be called from a shell providing the name of the result file s to be displayed It can be called by entering e g DP_MICRESS Delta_Gamma_intf mcr in the command line If no argument is provided a Summary of command line options is returned Alternatively under Windows the program can be activated by double clicking the DP_MICRESS icon To select a result file to be displayed go to Display Select see Figure 4 1 A result file can be also simply dragged and dropped to the DP_MICRESS icon DP_MICRESS always initially shows the result for the first time step Use the buttons next and last to view the results for the next time steps The program does not allow switching between files i e it has to be restarted to display another result file 4 2 Using DP_MICRESS DP_MICRESS uses a graphics window an operating window and a control panel to visualize and process MICRESS results These windows panels are explained in detail in the following chapters MICRESS User Guide Volume Ill Post Processing Chapter 4 DP_MICRESS 4 2 1 The graphics window The output files are displayed in the graphics window
8. The option virtual EDX offers the following features Figure 4 19 and Figure 4 20 e Display scan draw a line using the mouse A scan will be defined along the line Follow Nev i i i i i Previous the instructions in the operating window jr 35 The results are displayed in the graphics Fast window see Figure 4 18 Select scan e g Jump phas Dissociated e Display scans for all time steps displays Display scan e d Display scans for all time steps e e scans for a predefined line by display scan Display scans for selected time steps etc or linescan x y for all time steps Keep an UneScan etx l l LineScan Y ety eye on the operating window for Replot scan line e r instructions er previously selected line e s ormalise scans e n f i Front tracking e f e Linescan X enter the desired coordinates of Scan point en the line along which the scan shall be displayed Press the ENTER key The graphics window shows the line that corresponds to the defined coordinates _Miscellanea After that the scan is displayed Ext e Linescan Y similar to the option Linescan X Figure 4 19 The DP_MICRESS control but along the Y Axis panel virtual EDX e Replot scan line the scan line can be thus replotted e Rescan previously selected line the function is self explanatory e Normalise scans Allows for normalising the diagrams to an integral value of 1 Follow the command line for instruction
9. and off vector field display 2D b 2 Toggle on and off vector field display 3D b 3 Modify vector field display settings b s Display vector field scale b x Bicolour vectors b b Miscellanea Fig 4 17 Generating vector display for the example of a flow field around a dendrite in 2D Based on 3 result files one for the background and two for the two components of the vector left a vector field can be displayed using the vector filed option right MICRESS User Guide Volume Ill Post Processing 29 70 Chapter 4 DP_MICRESS 4 2 14 Generating output Using the option output the following outputs can be generated see figure 4 18 e image from current time step creates an image of the current time step You should define the path at which the file shall be saved e image from all time steps creates a series of images for all time steps The images are written in the folder where the corresponding MICRESS are to be found Image From current time step Oi e write larger images creates larger size ns a write larger images a images with toggle on off write high resolution images o h ASCII output From current o 4 e write high resolution images creates high ASCII outputs for all time steps o b i i Raster ASCII output from current o r resolution Images with toggle on off Raster ASCII outputs for all time steps o s Colour scale a c e ASCII output from current c
10. domain changes its appearance Ail Kitware ParaView 3 6 m Edit View Sources Filters Animation Tools ann A Figure 5 3 The ParaView main menu bar the Volume feature MICRESS User Guide Volume III Post Processing a Chapter 5 ParaView 5 1 2 Rotation Translation Pressing the left mouse button and moving the mouse at the same tile leads to free rotation Pressing the right mouse button with moving the mouse simultaneously zooms in and out A rotation around an axis is possible via pressing the shift and the left mouse button with simultaneously moving the mouse For translation press the shift button and the right mouse one and move the mouse MICRESS User Guide Volume Ill Post Processing RG Chapter 5 ParaView 5 1 3 Colour by different results and attributes Use the button coloured in red Figure 5 4 to switch between different output results The simulation domain will be coloured according to the output file selected in the menu bar see figure Fehler Verweisquelle konnte nicht gefunden werden 5 5 Al Kitware ParaView 3 6 1 Anm at Ba Ge ee 500 0 2 O EAOa Figure 5 4 The ParaView main menu bar the attribute feature korn grain number phas phase number rex stared elastic energy Figure 5 5 Colouring the simulation domain according to the different attributes of the output file MICRESS User Guide Volume Ill Post Pr
11. in your scale Thus each of the colours will cover a wider range of values e automatic number of steps selects a suitable number of colour regions automatically e random colour scale define a random colour scale only for LINUX e set seed random colour scale initialize random generator for random colour scale only for LINUX ac kJ a MICRE gt gt pa g d g B 3 O NICRESS Figure 4 7 Examples of different colour scales available by DP_MICRESS The result file is Delta_Gamma_phas mcr at its last time step MICRESS User Guide Volume Ill Post Processing C Chapter 4 DP_MICRESS 4 2 7 Run animations The option animation fig 4 8 has the following features e run animation animates the entire simulation from the beginning to its end with a time per section and number of repetitions as defined under animation settings e animate to the end animates the simulation Starting from the actual time step up to its end e animation settings allows to set animation Run animation atr parameters time per section and number of Animate to the end ate repetitions Default settings are 2 repetitive runs er and a time per section of 0 75 seconds To alter 20 these values click on the displayed values and Output enter new ones Virtual EDX Virtual EDX output Data informations Miscellanea Exit Figure 4 8 The DP_MICRESS control panel animation
12. the operating window e print information about geometry returns information about the geometry the actual zoom status and the symmetry in the operating window Figure 4 23 50 00000 s 50 00000 s The data information feature determination of the field values and coordinates of a point left the vertical distance middle and measuring an angle right The data being determined are displayed in the operating window The result file shown is Delta Gamma_conc mcr Delto_Gaomma_conc2 mer Belto_Gamma_cone2 mecr MICRESS User Guide Volume Ill Post Processing ar Chapter 4 DP_MICRESS 4 2 18 Miscellanea The options miscellanea and exit are characterised by the following features suspend GUI allows to show all options of key combinations Follow the command line for instructions and information remove output removes a selected time step from the output Important be careful the present result files will be overwritten about provides information on Display _MICRESS current version acknowledgements website for further information etc exit terminates the program MICRESS User Guide Volume Ill Post Processing xX Chapter 5 ParaView 5 ParaView 5 1 Installing and running ParaView The freeware ParaView is especially useful for post processing of 3D MICRESS output data Figure 5 1 The software can be downloaded for free from www paraview org ParaView
13. 6 7 gnuplot gt cd C Desktop Results_Gamma_Alpha gnuplot gt set xlabel t gnuplot gt set ylabel cumulated CPU time gnuplot gt plot Gamma_Alpha_TabP txt u 1 2 w gnuplot gt replot Gamma_Alpha_TQ_TabP txt u 1 2 w Fig 6 6 Command line input for plotting and comparing data Samma_Alpha_TabP tet u 1 2 Gamma _Alpha_TQ TabP txt u 1 2 cumulated CPU time Figure 6 7 Comparing different output files by simultaneous plotting This chapter has provided some very simple examples of MICRESS data evaluation using gnuplot Additional information to exploit all features of gnuplot can be found on www gnuplot info MICRESS User Guide Volume Ill Post Processing 90 70 x Chapter 7 Data conversion mcr to vtk Data conversion mcr to vtk As far as the post processing of MICRESS results is concerned the main characteristic feature of the ParaView software is that it requires a vtk format of the files to be read If you want to post process already existing result files you need to convert them into a vik format which can be done using DP_MICRESS Select outputls bo werde Binary single precision Geometry hie Binary double precision Compressed input T ASI 3 l oe gah o a 0 Dipit Fike En ST OT iE ADI Te Sra rterlagerwExamples Flesudts_Deka_Gammadela_gamma_vik Select ened yr et Fl f Binary single precision Compressed output Binar
14. 7 User Guide Version 6 0 Volume III POST PROCESSING Resolution of partial differential equations is more about art than science Apocryphal quotation from Numerical Recipes in Fortran 2 2 4 except for large values of 2 Anonymous 42 Douglas Adams edited by Margarita Bambach and Georg J Schmitz Contents NE EEE EEEE EEEE EEEE 3 1 POW tO USE INIS AN AN c E E 1 2 TENE O GUC UO WV erine E E E A EEEE EE E EE E E EEEE EE SAE EAE EEE E 2 POSE PIOCESSING iross A aceon AAN 4 3 1 Introduction to MICRESS Post Processing u22u 2020200200000nnnnnnnnnnnnnnnnnnnnnnnnnn 4 oJ Bl ol 21 YPO sricecs taxtuneryectspeviacturasirchiect ta cusasachercstaceeus earner eee 5 Sells INCH INES erde 5 3 12 A OW WIGS nee ee 8 3 1 3 IK TES rennen een 10 3 2 Overview of post processing tools for MICRESS results uunnensnnennnnnennnennnen 11 4 FDPEMICHESS u essen les eneeetecessaatecneeeetamenee 12 4 1 Installing DP_MICRESS 220000000 n000an0nanunnanunnnnnnnnunnnnunnnnnnnnunnnnunnnnnnanennnnn 12 4 2 USING DP MICHESS nn ae 13 42 1 TMG OFAD MICS WINGOW een cedveictendvatesded aucedudtaces 14 4 2 2 The operating window ccceccceecceeeseeeceeeceeeeseeeseueeseeeseeeseueeseeenaess 15 4 2 3 Te COMMO Dan Eee ee arena 16 4 2 4 Navigating the results uunuuussneensnenenenennennnenennnnnnennne nenn nenne nenenennnen 17 41 25 SEWN Seal een 18 4 2 0 COOU SCAG eu 19 42 6 RO
15. DP_MICRESS t Test _Binary phas Test ASCIl phas If no argument is provided apart from t a summary of command line options is returned Alternatively you can use DP_MICRESS t options i Input_File o Output_File Here i and o can be omitted if file names are specified in that order The output name can be omitted altogether if it is the same as the input To get a vtk format from a new simulation choose overwrite_vtk_not_zipped in the driving file section Name of output files The vtk format results for all field variables especially 3D for the output time steps _1 vtk through _5 vtk To see how to open an existing vtk file in ParaView please refer to chapter ParaView MICRESS User Guide Volume Ill Post Processing Chapter 8 Post processing Exercises 8 Post processing Exercises 8 1 Introduction to post processing exercises with DP_MICRESS This chapter presents a few examples of post processing using DP _MICRESS All exercises on post processing are based on the Delta Gamma example available in the MICRESS installation directory Not everything simulated here may be meaningful in terms of metallurgy The same example is however used for didactic reasons with the aim to demonstrate the general approach when post processing MICRESS results The given exercises should be performed interactively Three exercises will be presented separately with
16. HEEEFLERTERTLERREREILERHEUETPERHEBEITEETSEE TERRDPEELERBEPEFEEESEPEFR 25 Tander MICHESS iczccscetetcteentacaassaiesccbtedetegitetatsieaedozadsenteteattetedsahbanetetatedesaastaietccbtatadagssesadateeeboecaid 50 Hano EL Oe Vik VOM Vel ee ee ee 58 VEN OEBEREDNEREEEIEENEEUEFEUEFEREIETENEURUUNEHERETEIEEORT TERERTERLERNEBETENENETEFLERTERETTEREEBENEENEUEEEBENEREFTERESER TERREDERLERUENETENENLTERE 22 virtual EDX output 000424400044040eRnnnnnnnnennnnnennnn nennen nennen nnennnnnnnnnnnnnnennnn nennen nnennnnnnnnnnnn 34 WK TO WIN PNEREREEREERLEERREUEFLEREEREFEHEREUEFCERFEUELORSEVEFRERBEREFEORERRERTERTEURFEURHLVEFLERURERFEUEHDERECEENEURLENENLUFFLEREEUFNER 39 49 ZO QT e E tana A E E A E E E A 24 OHUDIOL arrra ee ae ee 11 44 compa CURSE reines 48 CUNO rere EB REERRE E S NEIN REDE NEE sek ane A EINS NENNE E NENDERNE 44 IEEE 6 gt ce SERIE BEER RE EA P A E E AA A AE E E E 46 MICRESS User Guide Volume Ill Post Processing
17. N AMIMAUONS su rennen 21 4 28 SEUNG VIEW ODIIONS ui cette et et eee ee tet cate tenses 22 4 2 9 Selecting displayed items eorr ERNA 24 4 2 10 Using symmetry OPeratiOns ccccsecccseeeceeecseeecseeesseeesseeesseeeees 25 42 11 HANGING ISOUNGS zes 26 4 2 12 Visualizing 3D results with DP_MICRESS 2u022220222s een 28 4213 Displaying Vecl rtnelds esssrssseer ne 29 A214 Generalno OUUU Eee 30 AAS MAEDA serie 32 42 16 Virtua EDX OUMU za aaa er 34 42 10 DaEAINMOmMaAUON RRR RR 36 T2 toz NI CEINE Teer eE EE diets 38 S 2 6 VNGW gees cece 52s cece seee ogee tone cace sarecassecss sass cess sesse cn aee tees sece acc saeesesccacetacscacscoces 39 5 1 Installing and running ParaView cccsceesceeeeeeseeeseeeseeneeeeseeeseeeeeoeseeeeseeseennenenees 39 2 SUING aA VOW ine ceed oe casa erate ei ee 41 5 1 1 Display Surface OF vollmera n u n un nn 41 51 2 ROtation Translation een 42 5 1 3 Colour by different results and attributes u00220002440 Bene eo 43 5 1 4 RUN aaa eis 44 5 1 5 applying filters setting thresholds making sections 45 6 ONUPIOL 2 ee een 46 Oils INSTAllING GNUDIOL 2 0 ee Be EB ee a ee te 47 6 2 Plotting data and fitting curves uuu0 uu00an0nnnn0nanunnnnunnnnnnnnunnnnnn nun nanunnnnnnanennnnn 48 6 3 Comparing different dala nnane ee 50 7 Data conversion Mer TO yo raara aaraa aaah aih 51 8 Post processing Exerc
18. _MICRESS v v gnuplot v ParaView Fig 3 3 Categorisation of the currently available freeware for post processing of MICRESS results These tools and their basic operation will be shortly introduced in the following chapters MICRESS User Guide Volume Ill Post Processing 11 70 C Chapter 4 DP_MICRESS 4 DP_MICRESS 4 1 Installing DP_MICRESS DP_MICRESS is the graphical user interface to Display MICRESS It is a post processing tool with a wide span of possibilities ranging from basic display and image output to advanced features such as zooming multiple display build in symmetry options animations and virtual EDX analysis It can handle several files simultaneously DP_MICRESS is preferentially used for reading and post processing 2D and 3D MICRESS output files lt reads result files in binary single and double precision native or not and ASCll format both compressed and not compressed Moreover it performs conversions between these formats This post processing tool can be freely downloaded from the download area at www micress de Display MICRESS jol Display Transfer Convert Op About File s to be displayed Select Clear Standard Advanced I Use graphical interface T Extrema from first last ASCII Arn imate Last Panels i Row major Column major Binary single precision Binan double precision Compressed
19. an line for all virtual EDX text outputs For all time steps r u f virtual EDX scan position for current time step r i time steps at the path where the corresponding Yirtual EDX scan position For all time steps r j i virtual EDX curve output from current time step r c M 3 R E S S out p ut fi es are to be fo un d virtual EDX curves outputs for all time steps r d Virtual EDX curves output for all time steps r s Virtual EDX curves output for selected time steps r m virtual edx curves output from current time step Front tracking text output r f ee 9 generates a graphics output of the field values can point text outpu r p SUR postion epee ma along the scan line for the current time step at a Scan point curve output r r Virtual EDA _ gt Virtual ED gt Soutput P Data informations path specified by the user e virtual edx curves output for all time steps generates graphics output of the field values along the scan line for all time steps at the path where Figure 4 21 The DP_MICRESS the corresponding MICRESS output control panel virtual EDX output files are to be found Miscellanea Exit e virtual edx curves output for selected time steps generates graphics output of the field values along the scan line for selected time steps at a path specified by the user e Front tacking text output lists all positions where a specified field value is present The
20. aximal values are displayed in the graphics window e set range manual setting of the Colour scale scales a predefined range for the x TE i Set min i s individual results A median value and nn ah Set range s r a range are displayed in the graphics Min max From display s d Global min max s g window Re read file for global min max s f e min max from display automatic setting of the scales for the individual results to the minimum maximum of the actually displayed result time step A median value and a range are displayed in the graphics window 30 i Output Virtual EDX id Virtual EDX output Data informations Miscellanea Exit e global min max automatic setting of the scales to the minimum maximum occurring in all time steps for the individual results similar to replot The values are displayed in the graphics window Figure 4 5 The DP_MICRESS control panel scale e re read file for global min max same as before but the results are re read to ensure evaluation of the full data set Here no values are displayed in the graphics window MICRESS User Guide Volume Ill Post Processing 18 70 C Chapter 4 DP_MICRESS 4 2 6 Colour scales The option colour scale fig 4 6 provides following features loop through colour scales displays the available colour scales loop backwards through colour scales same as above but displays the sca
21. d gnuplot are discussed in the subsequent chapters Information is given about how to install these software tools and how to use their graphical interface The chapters also provide some examples of possible evaluation and visualisation that may be helpful when post processing MICRESS results Some Post processing exercises may be helpful to get better acquainted with the evaluation of MICRESS results You may find further useful hints for generating specific output and troubleshooting in Useful Information and FAQ Any suggestions or comments for improvements on the MICRESS manual and documentation are highly appreciated and welcome Please send an e mail to documentation micress de MICRESS User Guide Volume Ill Post Processing Chapter 2 Introduction 2 Introduction The software MICRESS MICRostructure Evolution Simulation Software is developed for time and space resolved numerical simulations of solidification grain growth recrystallisation or solid state transformations in metallic alloys MICRESS covers aspects of phase evolution solutal and thermal diffusion and elastic stresses strains in the solid state It enables the calculation of microstructure formation in time and space by solving the free boundary problem of moving interfaces on the basis of a multiphase field approach Microstructure evolution is governed essentially by thermodynamic equilibria diffusion and curvature In case of m
22. e software is distributed freely and can be downloaded from the internet along with tutorials and user manuals Gnuplot handles both curves 2D and surfaces 3D Surfaces can be plotted as a mesh fitting the specified function floating in the 3D coordinate space or as a contour plot in the X Y plane For 2D plots there are also many plot styles including lines points boxes heat maps stacked histograms and contoured projections of 3D data The interface includes command line editing and history in most platforms Scope of this chapter is only giving a basic introduction to gnuplot using some MICRESS results as examples For detailed information the reader is referred to the gnuplot manuals MICRESS User Guide Volume Ill Post Processing C Chapter 6 gnuplot 6 1 Installing gnuplot File Plot Expressions Functions General Axes Chart Styles 3D Help GHUFLOT Version 4 4 patchlewel D last nodif ied Narch 2010 Susten AS Hindows 32 bit Copyright C 1986 1993 1998 2004 2007 2010 Thonas Hillians Colin Kelley and nany others gnuplot hone http HHH gnuplot info faq bugs etc type help seeking assistance innediate help type help plot window hit h erninal type set to uxt grup lot Figure 6 1 The gnuplot command line after installing gnuplot In order to install gnuplot first download the installation package from the World Wide Web and then unzip it into an appropriate directory After havin
23. e written sequentially with the time string contained in the file name If you import all these images at once in PowerPoint they are ordered automatically with respect to the output time After aligning them all together e g top and right you can create an animation This is quite straightforward and fast Alternatively you could use a Linux tool like convert to make an animated gif from the individual images MICRESS User Guide Volume Ill Post Processing 62 70 Chapter 10 References 10 References Further information and additional reading can be done at the web sites of the corresponding freeware for MICRESS post processing e for DP_MICRESS www micress de e for ParaView www paraview org e for gnuplot www gnuplot info MICRESS User Guide Volume Ill Post Processing RG Chapter 11 Index 11 Index DP_MICRESS acnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnennnnnnennnnnnnnnnnnnnnnennnnnennnnnennennnennen 11 D EERIE EA I E ETE E I EEE EEE IEI ee ee SUB RRRASERTESINR 28 la lau 1 1 EE PEE E a ee eee eee ee ee SE ee ee ee ee 21 60 PSC PR OM a ORAL AE EEE oss equtenctneavauia ceuesacsumeesteauneniecads 12 Cale WIATe AI OU OUT nenn R naar 59 COIOUE SCAG ss crsicasassite vaste nares ramenceummaniionsaastriiiararg neaian E 19 ONT NS OUTS e A E A thaeceiaweneetancias 59 COO TA a ee a re en eee ee ee hee ee eee eee ee eee ne tee eer eee ee 36 313 NUE EN OW ee ee ee ee een ee 36 DIEBIAY NIERES
24. emie anal emstene handeln rhs degrees and radians in the operating window Compare results w td Compare all outputs WWF e measure angle with vertical measures angles Pinpaint cell pointer wp Version information WI to a vertical line by drawing one line with the mouse The angle is given in both degrees and radians in the operating window Print information about geometry w g Miscellanea e extrema and average from display defines the average and the extrema of the current time step The results are displayed in the operating window e coordinates field value of a point defines a Figure 4 22 The DP_MICRESS control point to be investigated by a mouseclick Also panel Data Information returns the number of the cell i e the cell pointer The results are displayed in the operating window MICRESS User Guide Volume Ill Post Processing RE Chapter 4 DP_MICRESS e compare all outputs as compare results but for all time steps e pinpoint cell pointer returns field values coordinates of a specific numerical cell The results are displayed in the operating window e compare results offers a comparison of two results for a given time step The input value defines a tolerance within which both results are considered to be identical The operating window returns the statement that the compared values are either identical or different e version information returns the actual version of DP_MICRESS in
25. es distances extrema and average values Respective values are displayed in the operating window left MICRESS User Guide Volume Ill Post Processing RE Chapter 8 Post processing Exercises 8 3 Read and handle a single result file for multiple time steps When dealing with multiple time steps one is usually interested in generating different outputs for all time steps This exercise gives an example how to handle a single output file with multiple time steps For the purpose read the result file for conc2 from the Results_ Delta_Gamma folder in your MICRESS installation directory Create a line scan via Virtual EDX gt LineScanX LineScanY Create line scan outputs for the selected line for all time steps This can be done with the function Virtual EDX Output gt Virtual EDX curves outputs for all time steps If you prefer text files for your further data processing go to Virtual EDX Output gt Virtual EDX text outputs for all time steps If you need virtual EDX outputs for certain time steps go to Virtual EDX gt Display scans for selected outputs to display only the curves for the time steps of interest see Figure 8 4 To save them go to Virtual EDX Output gt Virtual EDX curves outputs for selected time steps Virtual EDX N lt lt om a i oY Ra tae i a al Select outputs uw Control conet inai a 0 02 0 015 _ Field volue s sx107 gt 0 01 eee i nn eng u
26. essing your results You can switch among different options using the control panel The individual functions of DP_MICRESS the control panel will be detailed in the next section Figure 4 3 The operating window of DP_MICRESS MICRESS User Guide Volume Ill Post Processing 15 70 RG Chapter 4 DP_MICRESS 4 2 3 The control panel The graphical visualisation of the result output file can be navigated via the control panel see Figure 4 4 Here e g the colour scale may be adjusted an animation may be created or a virtual EDX may be displayed The options to navigate visualize analyze animate and save the results will be explained briefly in the next sections General Hints If you click on the dashed line of a sub menu see red rectangle in Fig 4 4 the sub menu will open and remain available to facilitate work Most of the functions actions can be undone by re selecting the corresponding option Previous Last Ss _ K Dissocisted I 4 Jump to time step specified by its number j s Report output time s j t Pick time step to jump to with a graphical interface j g Fi gure 4 4 The DP_MICRESS control panel jump Next Previous m p Last m First m f Jump to time step specified by its number m s Report output time s m t Pick time step to jump to with a graphical interface m g Data informations Miscellanea MICRESS User Guide Vol
27. g read the Readme files and installation instructions you can run the wgnuplot exe Figure 6 1 Using the command line you can proceed to visualize and post process MICRESS output files MICRESS User Guide Volume Ill Post Processing Chapter 6 gnuplot 6 2 Plotting data and fitting curves The possibilities of plotting MICRESS data and fitting curves will be explained with the help of the Grain Growth example This example is stored in the MICRESS installation directory Let s consider that you would like to plot the average grain radius over time This information can be found in the Grain_Growth_ TabK file see Figure 6 3 in the Grain Growth result directory The details for this procedure are explained in fig 6 2 Fig 6 2 Command line input for plotting data and fitting Curves First specify the path of the respective result file Then label the axes of the desired plot If you do not wish to have a legend use the command set nokey Since this is a 2D plot only labels for the X and the Y axis are necessary This is done with the commands set xlabel and set ylabel resp The time t for microstructure evolution will be plotted along the X axis and the grain radius in micrometers will be plotted along the Y axis The columns of the data to be plotted are specified by typing e g plot Grain _Growth_TabK txt u 1 2 w lw 2 where u 1 2 indicates that column 2 of the tab
28. iles to be analysed are the most recent ones you created It is often useful to check whether MICRESS has really started creating the output immediately after starting the simulation For this purpose it is often wise to compare the computer time and the time of file creation update in the results directory Once you have verified the right output files you should decide about the best of post processing the individual files according to their contents The different output file types are shortly highlighted in the following es Results Delta Gamma fal Delta_Gamma_1DExt_conci mer E Delta_Gamma_1DExt_conc mer a Delta Gamma_1DExt_geoF mer E Delta_Samma_conci mer E Delta_Gamma_conc mer Delta_Gamma_driv mer Ei Delta_Gamma _geoF mer E Delta_Gamma_intf mer Delta_Gamma_orie mer El Delta_Gamma _phas mer Delta_Gamma_rest mor Delta Gamma _in txt E Delta_Gamma_log txt Delta_Gamma_scr txt Delta Gamma _TabD txt E Delta_Gamma_TabF txt E Delta_Gamma_TabL txt E Delta_Gamma_TabP txt 2 Delta_Gamma_TabT txt 2 Delta_Gamma_TabTQ txt 2 Delta_Gamma_TO txt Figure 3 1 An example of MICRESS output files MICRESS User Guide Volume Ill Post Processing 4 70 Chapter 4 DP_MICRESS output file types MICRESS generates the following categories of result files e files containing field values the mcr files e ASCII txt files containing statistical informat
29. in the next sections staring from post processing of i a single result file for a single time step ii a single result file with multiple time steps and ili multiple result files simultaneously 8 2 Read and handle a single result file for a single time step To begin with read the result file for conc2 from the Results _Delta_ Gamma folder in your MICRESS installation directory After the data file has been loaded in DP_MICRESS increase the thickness of your colour scale by going to View gt Increase thickness of colour scale Then remove all text annotations from the figure View gt Annotations Next go to the result at the time of 25 seconds either by using the Next button or the Jump function Set three fold symmetry to make it look like a dendrite see fig 8 1 This can be done using the function Display gt Three fold Symmetry You can toggle on and off the scale bar with the function View gt Annotations Click several times on Annotations until you toggle it off Repeat this action to toggle it on again Set the scale bar to a typical value e g 100 microns For that purpose go to scale gt set range MICRESS User Guide Volume Ill Post Processing 53 70 Graphics Window 2 Display MICRESS Figure 8 1 Increase colour bar thickness left and change to three fold symmetry right Generate a virtual EDX using the function VirtualEDX gt LinescanX gt LinescanX see Figure With the
30. inear flow trend used stores data relevant for making Von Neumann Mullins plots sums up the simulation time the CPU time the diffusion the seed the enthalpy the stress and the temperature times provides information on the recrystallized fraction gives orientation information reports information concerning the setting of the automatic time step when automatic time stepping has been selected shows the temperature change with progressing simulation time and the corresponding CPU time a Windows specific data file which stores the output of Thermo Calc s interface making it more convenient to exploit the origin of TQ errors It is always created under Windows when Thermo Calc coupling is activated MICRESS User Guide Volume Ill Post Processing RG Chapter 4 DP_MICRESS 3 1 3 vtk files Especially for 3D simulations e g fig 3 2 there is an option to save simulated data in a special format called vtk This format allows 3D visualisation of the results in freeware software tools like e g paraview www paraview org see chapter 5 This output option can be switched on in the driving file for the simulation As a consequence vtk files are written out instead of mcr files The major difference between these two output formats is that a mcr file contains the results for one field variable for all time steps while each vtk file comprises all field variables for only
31. ion e optional vtk files especially for 3 D results 3 1 1 mer files Three different classes of MICRESS result files mcr can be distinguished e special mcr files e standard mcr files e 1d_extension mcr files The meaning and content of these files is described in the following tables Special mcr output files output Description o a geometry file being necessary for any post processing It stores information concerning the geometry of the simulation domain e g grid geoF mcr size cell dimensions etc This is file is used by any post processing program for the visualisation of results eo a restart file that allows to restart continue a simulation MICRESS User Guide Volume Ill Post Processing Chapter 4 DP_MICRESS Results for the individual field variables 2D 3D for all output time steps in standard mcr files output Description S KANAMA gives information about the concentration of the alloying element N eek Similar to concN except for the interface regions where the concentration in a given phase is written out and not the mixture concentration dGsp mcr used in stress coupled simulations it shows the stress contribution to the driving force diff mcr shows the data provided by Thermo Calc via its TQ interface for the diffusion coefficients o A gives the driving force for the growth of a grain with a higher nu
32. ion I r lt gt b t the annotation position is switched from left right to bottom top and vice versa MICRESS User Guide Volume Ill Post Processing 22 70 Chapter 4 DP_MICRESS e increase thickness of colour scale four different sizes for the annotations can be selected by repeated activation of this button If you select view annotations once you would see your plot together with comments and a colour scale If you select it twice the graph will be displayed with a colour scale only If selected three times the plot will be displayed with comments but without a colour scale Selecting the command four times displays neither comments nor colour scale e display temperature at the bottom displays the temperature at the bottom of the simulation domain Fig 4 10 Set number of panels When opening more than two files a rearrangement of the different results makes Horizontal 5 them better readable Use this function to shift from the default setting left to an aligned Vertical T configuration right Order Row major MICRESS User Guide Volume Ill Post Processing RG Chapter 4 DP_MICRESS 4 2 9 Selecting displayed items The menu display fig 4 11 offers the following features many of them being self explanatory Display length scale d l e display length scale inserts a length Set length to be displayed d m Flip length scale vertical horizontal d f sca
33. ises uu0 0000000an0nannnnnnnnunanunannnnnnnnnnnnunnnunannnnnnnnnn 53 8 1 Introduction to post processing exercises with DP_MICRESG 53 8 2 Read and handle a single result file for a single time Step uuunuuunununnn 53 8 3 Read and handle a single result file for multiple time steps 0sc0008 56 84 Read mulupleiresult files en 57 9 Useful Information and FAQs 22 60 9 1 Why can I not open a certain 3D output file by DP_MICRESS7 60 9 2 How to calculate the intf OUtPUT sorsoran aaa 61 9 3 How to combine phase boundaries and concentration in DP_MICRESS 61 9 4 DP_MICRESS does not show any letters or numbers in plots 62 9 5 How to save an animation as a direct output in DP_MICRESS 62 10 Relerences era a aa eures a 63 1 0 9 Ina gt recs E E EEEE E S AS T E A EAA AET NE E EATE L EA FORSRERR 64 Chapter 1 How to use this manual 1 How to use this manual The Introduction shortly presents the capabilities of the software as well as its wide range of applications It also introduces the recent developments and improvements of MICRESS The chapter Post Processing offers an overview of the MICRESS result files and presents the freeware that can be used for processing analyzing and visualisation of MICRESS output The capabilities of the programs DP_MICRESS ParaView an
34. le see fig 6 2 shall be plotted over column 1 by using a line w with line and the line width lw shall be 2 E gnuplot Command Line gnuplot gt cd C Desktop Results_Grain_Growth gnuplot gt set nokey gnuplot gt set xlabel t gnuplot gt set ylabel R um gnuplot gt plot Grain_Growth_TabK txt u 1 2 w I Iw 2 gnuplot gt f x RO k x m gnuplot gt R0 1 gnuplot gt k 1 gnuplot gt m 1 gnuplot gt fit f x Grain_Growth_TabK txt u 1 2 via RO k m gnuplot gt replot f x w lines gnuplot gt print RO RO um gnuplot gt print k k gnuplot gt print m m gnuplot gt pause 1 MICRESS User Guide Volume Ill Post Processing RG Chapter 6 gnuplot m Grain_Growth_TabK bt WordPad k Date Bearbeiten Ansicht Einf gen Format Simlarioa pm radius Gr density Grain Liquid Phase i time 3 micrometer Micrometer E z Number present Ti a avg Ea Ba radii are calculated from the average fractions 1 8402BE 04 oo NMSs Liguid 1 80556E 04 ae Noa Liquid 1 77083E 04 s1 M5 Liguid 1 73611E 03 50 N5 Liquid 1 70135E 04 45 No Liquid Figure 6 3 The Grain_Growth_TabK txt output file the average radius column 2 is plotted over the simulation time column 1 As soon as the last command is entered the plot shown in Fig 6 4 will appear If you wish to fit the curve e g by a least squares fit specify an analytical function describing the curve A function of the f
35. le into the lower right corner of the Zoom in d z Zoom out d y d splay Zoom back revert to previous zoom settings d x Switch symmetry d s e set length to be displayed defines the ee 2 length of the scale aves ees re R Display grid d g e flip length scale vertical horizontal Sante ae ie selects orientation of the length scale er ie Absolute value of results d a e zoom in allows for a closer look at the rads ac arid oft Ganda ce rast ai details e zoom out goes back to the larger view Vectorfield Isol n e zoom back revert to previous zoom settings Output e toggle on off display of raster tua output e special symmetry operations see Data informations separate chapter 4 2 10 silat e display grid e set nb of gridlines Bal Hf Figure 4 11 ORP 54 a er Deal The DP_MICRESS control panel e logarithmic display of results Display e absolute value of results e toggle on off display of raster MICRESS User Guide Volume Ill Post Processing C Chapter 4 DP_MICRESS 4 2 10 Using symmetry operations Display length scale d 1 Set length to be displayed d m e switch symmetry toggle through symmetry ey 5 options below Se RE OM re to previous zoom settings d x e three folded symmetry selects a 3 fold ae ne Four folded symmetry d 4 sym m eiry Nine folded symmetry d 9 Symmetry type d c Bu ori d g e four folded symmetry selects a 4 fold Set nb oF gridlines d h Display
36. les in a reverse order select colour scale allows selection of a colour scale e g after viewing them in one of the loop commands fiddle with brightness amp contrast changes brightness and or contrast using the mouse Click on the graph to activate the selected values reset brightness amp contrast resets to the previous value inverse colour scale inverts the colours in the colour scale the colour for the minimum value becomes the colour for the maximum one and vice versa Previous Dissociated A aisa abi Loop through colour scales c Loop backwards through colour scales c m Select colour scale gt Fiddle with bright amp contr c f Reset bright amp contr c r Inverse colour scale c i Cut off min and max c c Stepwise colour scale c s Set number of steps c u Automatic number of steps c t Random colour scale c k Set seed random colour scale c p Miscellanea Exit Figure 4 6 The DP_MICRESS control panel colour scale e cut off min and max cuts off minima and maxima and replaces respective regions by black and white MICRESS User Guide Volume Ill Post Processing 19 70 C Chapter 4 DP_MICRESS e stepwise colour scale selects colour scale to colour regions being specified The colours of the scale change continuously e set number of steps allows to define number of colour regions e g if you enter 3 you will have only three colours
37. lse 1 e press Process The new result will be like the original concentration output but with the concentration value 0 along all grain and phase boundaries Combining different MICRESS outputs in general you could obtain any type of graphical visualisation you need For example if you would like to have only phase boundaries marked you can use the phase fraction outputs 9 4 DP_MICRESS does not show any letters or numbers in plots You use DP_MICRESS to create a certain plot but you get a colour scale without numbers The simplest reason for such behaviour could be that the image size format of the MICRESS result file does not fit well into the default size of the graphical window In that case simply dragging the window to a different size or shape would help Depending on the operating system and installation the output will be resized automatically or you may have to do it yourself by going to View resize window If this is not the case there might be a problem with the fonts Check whether you have installed the most recent MICRESS version You can do this in the Windows Explorer if you right click on the file and check the file properties 9 5 How to save an animation as a direct output in DP_MICRESS There is no direct way to create animations from DP_MICRESS What you could do is set the output format in DP_MICRESS to gif and select output for all time steps Then gif images of all output time steps ar
38. mation about the input data initial relinearisation output at initialisation or before the first nucleation CPU time and intermediate output at defined time steps log txt txt files containing dedicated data ET for the average and extrema of concentration in each phase TabC ixt when the concentration coupling is activated TabD txt gives the diffusion coefficients at the corresponding tab log times when the concentration coupling is activated MICRESS User Guide Volume Ill Post Processing C Chapter 4 DP_MICRESS dTLat txt TabF txt TabGD txt TabK txt TabL txt TabLin txt TabN txt TabP txt TabR txt TabO txt TabT txt TabTQ txt TQ txt used for intermediate data relative to the release of latent heat for the average fraction of each phase in the whole domain when the concentration coupling is activated contains information about the grain status i e whether a grain increases in dimensions contains the number of grains This file is updated by default each time a grain is set or disappears an ASCll monitoring output generated at user defined intervals to check the simulation progress it gives information on the temperature gradient and some additional information depending on the type of coupling activated it gives the temperature at defined time intervals for the temperature at the bottom and at the connecting points when l
39. mber into a lower one frac mcr yields the fraction of solid fracN mcr shows the fraction of the phase N geoF mcr stores information concerning the geometry i e grid size cell dimension hStr mcr provides information about the hydrostatic stress when the stress coupling is activated intf mcr provides data fro tracking the interface korn mcr a graphical output for the grain field containing the numbers assigned to grains in a consecutive manner during their definition in the initial grain structure or their nucleation during runtime rela mim FRE or mer MICRESS User Guide Volume Ill Post Processing 6 70 x Chapter 4 DP_MICRESS phas mcr provides information on the phases in the system rest mcr contains data necessary to restart a simulation this binary file is for internal use by MICRESS and cannot be post processed rex mcr lists the stored energy rei also sxyCV sxzCV syyCV syzCV and szzCV components of the stress tensor xxCV yyCV zzCV are the diagonal elements in the 2D 8D case sxyCV sxzCV syzCV are off diagonal terms torsion respectively The output is available when stress coupling is activated temp mcr For the temperature in Kelvin when temperature coupling is activated It can be also used for plotting temperature distance profiles uxCV mer also uyCV and uzCV They record the normal displacements when the stress coupling i
40. n of a sectional plane proceeds as follows fig 4 16 Previous e xy cutting plane xz cutting plane and yz cutting plane allow to select the plane to be displayed default XZ plane Dissociated e cutting plane up down increases decreases u l xY cutting plane 3 2 the position of the cutting plane the Y XZ cutting plane 3 y YZ cutti 3 coordinate by default ee ve Cutting plane up 3 u Cutting plane down 3 d e set cutting plane coordinate sets the position of the cutting plane the Y coordinate by default Set cutting plane coordinate 3 s Fig 4 16 The 3D menue MICRESS User Guide Volume Ill Post Processing RG Chapter 4 DP_MICRESS 4 2 13 Displaying vector fields Displaying vector fields needs at least three different result files to be displayed One of these result files provides the background for displaying the vectors while the two three further result files are the different components of the vector in 2D resp 3D Figure 4 17 Currently only the MICRESS elastic module provides a vector valued output In future also the MICRESS flow module will make use of vector field displays e toggle on and off vector display 2D e toggle on and off vector display 3D same as above but for 3D e modify vector field display settings e display vector field scale together with bicolour a vectors o cE 3 Toggle on
41. n the present MICRESS Vol 3 post processing you will find e _ an overview of the different MICRESS result files e an overview of the available software for post processing of MICRESS result files e a short overview of the functions of DP_MICRESS ParaView and gnuplot e examples of possible data post processing e some useful information troubleshooting and frequently asked questions A description of the phase field phenomenology and theoretical background can be found in MICRESS Vol 0 MICRESS phenomenology along with a review type summary of different MICRESS applications MICRESS Vol Installing MICRESS provides information about the installation of the software and explains how to use the software with the help of a simple example MICRESS Vol Il Running MICRESS offers an overview of the input file structure as well as theoretical and practical information on metallurgical processes numerical modelling using the phase field model and troubleshooting when starting a simulation It provides useful hints on how to build the input file according to the process to be simulated Eventually MICRESS Vol IV MICRESS Examples contains a collection of examples of simulations performed on various topics MICRESS User Guide Volume Ill Post Processing RG Chapter 4 DP_MICRESS Post Processing 3 1 Introduction to MICRESS Post Processing Before starting post processing make sure that the f
42. ocessing R Chapter 5 ParaView 5 1 4 Run an animation You can run an animation using the output for a given attribute for all time steps For that purpose use the animation bar in the main menu Figure 5 6 You can easily switch between previous and next time steps go directly to the very first last time step or perform different loops of visualisation Figure 5 6 The ParaView animation bar CK lt A gt D D ime ee eee MICRESS User Guide Volume Ill Post Processing C Chapter 5 ParaView 5 1 5 applying filters setting thresholds making sections The clip filter cuts away a portion of the input data set using an implicit plane It returns unstructured grid data on output Some of the possible options here are a slice filter a contour filter a clip filter and others With their help one can easily generate different sections through the calculation domain Kitware ParaView 3 6 1 T BR 9 Q HH EAA Figure 5 7 The ParaView bar for p D wo GA ek OR WD K creating clips and thresholds cm zj v Volume v More detailed information about that and all other features of ParaView can be found in the ParaView user s manual Further information is available at www paraview org MICRESS User Guide Volume Ill Post Processing RX Chapter 6 gnuplot 6 gnuplot gnuplot is a command line driven interactive function plotting utility for both Windows and Linux platforms Th
43. one time step A conversion of mcer files to vtk files is possible using the DP_MICRESS tool see chapter 7 HIH MMPH NRY FR N u SS ttt nen Rx 7 gt PERLE N N x it Sn w A A a T Pia m Fig 3 2 3 D Simulation of a an array of Mg dendrites with the results being saved and displayed in the vtk format gt Dre u cP e s a rI rt AL lt gt ver eo n 4 4 gt nae a l gt s m o y rn ad Wan MASS x Mba al JOUL ER F x2 F Hr 222 AR N Fr soodat 7 SOA MICRESS User Guide Volume Ill Post Processing RX Chapter 4 DP_MICRESS 3 2 Overview of post processing tools for MICRESS results Currently available freeware frequently used for post processing different MICRESS result files comprises e DP_MICRESS This is a 2D partially 3D evaluation tool the graphical user interface to Display MICRESS This tool is provided along with your MICRESS installation CD e ParaView This is a freely available 3D post processor from ParaView www paraview org e gnuplot This command line driven plotting utility can be used for post processing of text and ASCII files It can be downloaded from www gnuplot info The ASCII and txt result files can be also post processed with any type of ASCII post processing e g MS Editor Excel etc software 2D 3D text ASCII DP
44. orm f x RO k x m has been used as an example here fig 6 2 second part of the gnuplot commands R mm Rimm 0 100 200 300 400 500 600 700 800 0 100 200 300 400 500 600 700 800 t t Figure 6 4 A plot of the grain radius over time Figure 6 5 The original data red and the fitted curve green Initial values for the parameters Ro k and m have to be specified which will be used as initial guesses during the fitting procedure Type in fit f x Grain_Growth_TabK txt u 1 2 via RO k m to start the fitting procedure After the optimal fit has been found the number of MICRESS User Guide Volume Ill Post Processing 49 70 6 3 Chapter 6 gnuplot iterations that have been necessary for convergence will be shown along with the final sum of squares of the residuals as well as the fitted values for the parameters Ro k and m If you wish to plot the value of each of the parameters individually use the command print and type in the parameter and its unit To plot both the original and the fitted curve use the command replot as replot f x w lines The plot shown in Fig 6 5 will be displayed Comparing different data For plotting two different curves in the same figure use the commands plot and replot First set labels for the x and the y axes Then use the command plof to plot the first curve see figure 6 6 for syntax In that way different curves can be compared to each other Figure
45. output is generated for all times at a path specified by the user MICRESS User Guide Volume Ill Post Processing 34 70 Chapter 4 DP_MICRESS e virtual edx text outputs for all time steps generates an ASCII type output of the field values along the scan line for the all time steps at the path where the corresponding MICRESS output files are to be found e virtual edx text output from current time step generates an ASCII type output of the field values along the scan line for the current time step at a path specified by the user e virtual edx scan position for current time step generates an image including the scan line for current time step at a path specified by the user e virtual edx scan position for all time steps generates images including the scan line for all time steps at the path where the corresponding MICRESS output files are to be found e virtual edx curves output from current time step generates a graphics output of the field values along the scan line for the current time step at a path specified by the user e virtual edx curves output for all time steps generates graphics output of the field values along the scan line for all time steps at the path where the corresponding MICRESS output files are to be found e virtual edx curves output for selected time steps generates graphics output of the field values along the scan line for selected time steps at a path specified by the user e Fron
46. plots independent of each other For that purpose fix the phase picture at 25 s This can be done by using the menu Dissociated gt Jump to time step specified by its number Here you can select which result files to modify and which time step to go see Figure 8 7 To display the difference between two of the results you need to have only two results plotted For that purpose exit the present plot with the three figures and re plot only the files Delta_Gamma_conc1 mcr Delta_Gamma_conc2 mcr Set the time step for both to be equal e g 27 s Then go to Display gt Display difference of two results The difference between the two plots will be displayed in the same graphics window see Figure 8 8 To display the evolution of a quantity e g the carbon concentration in time copy e g Delta Gamma_conci mcr to Delta Gamma_concib mcr and then read these two files original and copy navigate them in dissociated mode and generate the difference between two different time steps FA Graphics Window 1 Display_MICRESS CH Tr Figure 8 6 Simultaneous plot of three different result files in DP_MICRESS MICRESS User Guide Volume Ill Post Processing at Chapter 8 Post processing Exercises 4 Graphics Window 1 Display_MICRESS Siol CH NA i Figure 8 7 Dissociated navigation of multiple result files plotted simultaneously in DP_MICRESS The left and the middle figure show the concent
47. rations of C and Mn at the time step of 30 s while the figure right shows the phase distribution at 7 5 s Figure 8 8 Displaying the difference left between two results e g conc1 and conc2 of Delta_Gamma at different times MICRESS User Guide Volume Ill Post Processing Chapter 9 Useful information and FAQ s 9 Useful Information and FAQs 9 1 Why can I not open a certain 3D output file by DP_MICRESS The important question whether you can open a MICRESS result file with DP_MICRESS is the size of the geometry As the result files are compressed the shown file size is not relevant First the files have to be decompressed before being loaded into the memory Normally if MICRESS is able to calculate and write the results DP_MICRESS should be able to open them even it if may take quite a long time If you are facing problems with opening a MICRESS result file with DP_MICRESS you should first check whether there is any other reason why the file cannot be opened Such reasons can be limited disk space limited memory of the computer or too slow operation via a network If the 32 bit address space is limiting you should get a corresponding error message If this is not the case make a backup of your result files and try the following options e Use DP_MICRESS to transfer the files to vtk format without displaying them You can do this either from the graphical interface of DP_MICRESS or in
48. reates ASCII Output numbering on f Image driver GIF o g output for current time step at a defined P ie path Accept default naming o d e ASCII output from all time steps creates ASCII output for all time steps at the already specified path Virtual EDS Virtual ED output Figure 4 18 The DP_MICRESS control panel output Data informations e Raster ASCII output from current creates eres ASCII output for current time step at a defined path You should specify the desired grid spacing in um e Raster ASCII output for all time steps creates ASCII output for all time steps at a defined path You should specify the desired grid spacing in um e colour scale saves selected colour scales as images MICRESS User Guide Volume Ill Post Processing a a Chapter 4 DP_MICRESS e output numbering creates a numbered ordering of the output with toggle on off This is useful where filenames become too long otherwise e image driver gif postscript toggle data format for image files gif ps e accept default naming or do not toggle for selecting own nomenclature Hints In order to increase the output readability try the following increase the thickness of the colour scale use black and white plots instead of colourful ones use white background to save ink use axes labelling MICRESS User Guide Volume Ill Post Processing C Chapter 4 DP_MICRESS 4 2 15 Virtual EDX
49. requires a vtk format of the files to be read To exploit how to create a vtk file from existing MICRESS results please refer to chapter 7 of this handbook on Data conversion There are also options to directly specify create vtk output from MICRESS simulations Please note that within this manual only a very basic introduction can be given as there are many many options for the use of ParaView To open an existing vtk file in ParaView run the program In the main menu bar go to File Open Choose the file to be opened It will usually appear as filename_ vtk The selected file appears in the tree of built in objects in the left side of the ParaView window Click on apply under object inspector Properties the sub window below the built in objects tree Then the calculation domain similar to Figure 5 1 of your simulation will appear in the window right MICRESS User Guide Volume Ill Post Processing RG Chapter 5 ParaView Figure 5 1 AMICRESS 3D result output displayed using ParaView Figure 5 2 Opening a vik file in ParaView left and the simulation domain right MICRESS User Guide Volume Ill Post Processing C Chapter 5 ParaView 5 2 Using Paraview 5 1 1 Display surface or volume Once having loaded the result file use the button shown in fig 5 3 marked in red to switch among outline surface volume and slice Observe how the simulation
50. s Bicolour isolines i b Write contour output i w e display contours shows only the contours see Write contour AAA IEE Figure 4 15 mE e print isolines values returns values of isolines in the ge isoines D operating window 3D e bicolour isolines changes the colour of the isolines Output black lt gt white Virtual EDX e write contour output writes a txt file comprising the ee ES coordinates of a preselected isoline for the current Data informabons time step Miscellanea e write contour outputs writes a txt file comprising L the coordinates of a preselected isoline for all time steps Figure 4 14 The DP _MICRESS control panel isolines MICRESS User Guide Volume Ill Post Processing RG Chapter 4 DP_MICRESS ti a Mapping of carbon b with isolines at c 1 02 c isoline contours only conc1 without isolines 1 01 and 1 005 at Fig 4 15 Different options for displaying concentration isolines here Delta Gamma results for carbon at t 30 s MICRESS User Guide Volume Ill Post Processing C Chapter 4 DP_MICRESS 4 2 12 Visualizing 3D results with DP_MICRESS Actually DP_MICRESS is not a full 3D viewer For 3D post processing thus the ParaView tool see chapter 5 is recommended DP_MICRESS allows creating sections parallel to the coordinate system These sections can then be analysed with the tools known for 2D analysis The navigation and selectio
51. s activated vel mer gives out the interface velocity vxCV mcr also vyCV vzCV syyCV syzCV and szzCV components of the stress tensor xxCV yyCV zzCV are the diagonal elements in the 2D 8D case sxyCV sxzCV syzCV are off diagonal terms torsion respectively This is true if the stress coupling is activated vM mer gives out the von Mises stress when stress coupling is activated Results for individual field variables calculated in extended 1D fields 1DExt output Description S 1DExt_conc1 mcr shows the concentration of alloy element 1 as specified in the MICRESS driving file when a 1D external field has been used in the simulation 1DExt_conc2 mcr shows the concentration of alloy element 2 as specified in the MICRESS driving file when a 1D external field has been used in the simulation ir ME AN gives the temperature when a 1D temperature field is used Biene shows the enthalpy when a 1D temperature field is used MICRESS User Guide Volume Ill Post Processing gt Chapter 4 DP_MICRESS 3 1 2 ASCIl txt files Two different classes of MICRESS ASCII result files txt can be distinguished e special txt files e standard txt files The meaning and content of these files is described in the following tables Special txt output files output Description o the input file corresponds to the driving file as understood by MICRESS in txt gives infor
52. t tacking text output lists all positions where a specified field value is present The output is generated for all times at a path specified by the user e scan point text output lists the field values at a defined scan point over time as a text output at a path specified by the user e scan point position output saves pictures with an indicated scan point position at a path specified by the user e scan point curve output saves the field values at a defined scan point over time as a diagram The path where the graph is saved is defined by the user MICRESS User Guide Volume Ill Post Processing Chapter 4 DP_MICRESS 4 2 17 Data information The option data information offers the following features figures 4 22 and 4 23 e distance between two points measures the distance by drawing a line with the mouse hold the left mouse button The line length is Previous Last First shown in the operating window ue e measure angle measures angles by drawing Dissociated two lines with the mouse select the left button scale of the mouse twice The angle is given in both degrees and radians in the operating window Distance between two points WHT Measure angle WE e measure angle with horizontal measures the Measure angle with horizontal wth angle to a horizontal line by drawing a line Bere enele Wi n Venues Hat Coordinates Field value of a point wete with the mouse The angle is given in both Sdtn
53. the command line by entering DP_MICRESS VTK newfile vtk source phas Several source files can be specified e g conci and phas Even if you may get the feeling that the procedure does not work it should produce a correct output You will probably need a 64bit ParaView version to display the vtk results e Use DP_MICRESS to reduce the resolution of the outputs by a factor of 2 Typically you do not need full resolution for viewing the results For that purpose enter DP_MICRESS Rescale 1 2 w newfile source in the command line Alternatively you can use the Graphical Interface Transfer Then you should be able to view the new result files with lower resolution in DP_MICRESS MICRESS User Guide Volume Ill Post Processing 60 70 Chapter 9 Useful information and FAQ s If neither of this helps you can still rerun the MICRESS simulation and write the outputs directly with smaller resolution The resolution can be specified in the geometry input of the driving file as a second optional parameter to the grid spacing 9 2 How to calculate the intf output The intf is an integer output According to the number of combinations of pair wise phase grain interactions it is equal to e iin dual interfaces e 3in triple junctions e 6 in quadruple junctions e 10 in quintuple junctions It is defined in all regions where the fractions are between phMin and 1 phMin together with the direct neighbo
54. ulticomponent alloys the required thermodynamic data can either be provided to MICRESS in the form of locally linearized phase diagrams or by direct coupling to thermodynamic data sets via a special TQ interface developed in collaboration with Thermo Calc AB Stockholm MICRESS is based on the multi phase field method which defines a phase field parameter for each phase being involved The phase field parameter describes the fraction of each phase as a continuous function of space and time Each single grain is mapped to a distinct phase field parameter and is treated as an individual phase A set of coupled partial differential equations describes the evolution of the phase field parameter s and of the concentration temperature stress and flow fields The total set of equations is solved explicitly by the finite difference method on a cubic grid 2D and 3D simulations are possible The size of the simulation domain the number of grains phases and components is restricted mainly by the available memory size and the CPU speed MICRESS User Guide Volume Ill Post Processing xX Chapter 2 Introduction MICRESS handles e 1 2 and 3 dimensional calculation domains e arbitrary number of components phases and grains e solid solid and solid liquid interactions e anisotropy of grain boundaries mobility and energy MICRESS supports e coupling to thermodynamic database via the TQ interface of Thermo Calc I
55. ume Ill Post Processing Chapter 4 DP_MICRESS 4 2 4 Navigating the results Navigating the results means finding and selecting the time step of the result being of interest There are several options e next displays the next time step in the graphics window e previous displays previous time steps e last displays the last time step e first displays the first time step e The option jump has the following features see Fig 4 4 o gt jump to time step specified by its number allows to jump to a specific output number not corresponding to the time o report output time s the output numbers for the time steps is specified in the operating window o pick time step to jump to with a graphical interface the user chooses manually the time steps for which results shall be displayed e dissociated allows navigating viewing different result types independently at different time steps Each result type then must be navigated separately Here the options next previous last first jump to time step specified by its number report output time s and pick time step to jump to with a graphical interface are also available MICRESS User Guide Volume Ill Post Processing RC Chapter 4 DP_MICRESS 4 2 5 Setting scales The option scale of the control panel offers the following features Figure 4 5 e set min max manual setting of the scales min max for the individual results The minimal and the m
56. ur grid cells where one of the fractions is O or 1 In the remaining region the value of intf is O 9 3 How to combine phase boundaries and concentration in DP_MICRESS The simplest way to combine phase boundaries and concentration outputs in DP_MICRESS would be to draw isolines at a given composition which approximately corresponds to the value in the middle of the phase boundary This works sufficiently well only if the difference between the concentrations of the present phases is much bigger than the variance inside each phase In order to draw the isolines select Isolines and Add an isoline in DP_MICRESS shortcut i a With Bicolour isolines you can toggle between black white and bicolour lines A completely different approach would be to use the Display _MICRESS main menu and the operations on MICRESS result files OP to create a new result file by combining various MICRESS outputs You can e g use the fact that phase and grain boundaries are marked as 1 in the phas output and combine this information with a concentration output For that purpose use the following approach MICRESS User Guide Volume Ill Post Processing 61 70 Chapter 9 Useful information and FAQ s e select the inputs phas and conc1 in the OP menu Note phas shall be selected as the first and conci as the second file e select anon existing output name e specify an operation in Perl format such as if 2 1 0 e
57. virtual EDX you can e g determine the concentration profile ahead of the dendrite tip scan concentration across a number of secondary dendrite arms or determine the liquid composition at a point close to the upper boundary Furthermore you could add an isoline at a suitable composition in a small distance in front of the dendrites This can be done using the menu solines gt Add an isoline To display the contours of the isoline select solines gt Display isolines Repeat the action to toggle off the isolines and go back to coloured view Figure 8 2 Displaying isolines left and generating a virtual EDX right MICRESS User Guide Volume Ill Post Processing ax Chapter 8 Post processing Exercises To label the isoline go to solines gt Label isolines You could zoom in the dendrite tip by going to Display gt Zoom in Using the mouse you should then select the range you would like to take a closer look at You can also alter the scaling to resolve the concentration distribution in the solid You can use the option Data information to measure the distance and the angle between two points to determine the coordinates or the field values of a selected point as well as to obtain extrema and average values in the operating window see Figure 8 3 Display MECRESS OP MI m AT Tih ct ws foe ie Go ep Figure 8 3 Extracting numbers with Data information coordinates field values angl
58. y double precision MT Big Endian output C asc l Rescale 1 701 mem Spe tte eal MITTIT Geog a 7 4 l i 2 j n g Han g J Dl D 1279 a A sog nn O 0 J a 4 4 4 Ua J Giga Ben O q a 4 Figure 7 1 How to transfer MICRESS results from mcr to vtk format via DP_MICRESS the operating window left and the vtk filter right MICRESS User Guide Volume Ill Post Processing 91 70 Chapter 7 Data conversion mcr to vtk For that purpose start DP_MICRESS go to transfer in the main menu bar and from there select the result file to be converted see Figure 7 1 It does not matter which mcr file you will select Once you have selected one and given it a respective name to which it shall be converted click on the vik filter option at the bottom of the window Then another window will open where you can choose the time steps for which you would like to have vtk files created Select write output after you finished The vtk files will be generated in the directory indicated by you The tool Transfer MICRESS converts result files to and from the following formats binary both single and double precision and ASCII both compressed and not compressed The ASCII format is useful to transfer results between platforms Transfer MICRESS can also rename MICRESS result files using Irix or Windows naming conventions It can for example be called with

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