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User Guide Version 6.1 - RWTH Aachen University

1. User Guide Version 6 1 Volume IIl 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 uam Douglas Adams edited by MICRESS group Contents DIDI Me 3 1 How to use this Madldl sarao 1 A A O o e 2 POSE POCOS Oi an 4 3 1 Introduction to MICRESS Post Processing eene nenes 4 UT TS T0 a E A 5 adele MINOT WRG S AA D AA A R a a A E E E A E TER SAN VEG TIMES 9 3 2 Overview of post processing tools for MICRESS results esse 11 4 UP OMIUHESS eee ene ere eee ee ee eee MEE 12 4 1 Installing DP MIGHESS unus Iudae dota 12 722 UsmuDP MICHESO escri ai 13 42 1 he graphics window 14 42 2 TOO operating windOW sssssssee nnne 15 42a Ne control pane IRE 16 4 2 4 Navigating the results nnn 17 A PESE NR 18 A20 GON UNE SC ANC mm 19 A A esp RR bep ead itn epson st etur uad uno 20 ADs SSelungvieWODLHOIIS secus eo actvebnst edes dori ein natin uS lvi E MEM NM nU MEI ML 27 278 Seeing displayed IBITIS santana 24 4 2 10 Using symmetry operations venta tassi diea ictu tucut 25 4 2 11 o RR 26 4 2 12 Visualizing 3D results with DP MICRESS sssssssssssses 28 4 2 13 LV STONY TG
2. MICRESS User Guide Volume III Post Processing B 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 lane JE 89cooe907295 Figure 5 4 he ParaView main menu bar the attribute feature karn 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 III Post Processing C 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 Ihe ParaView animation bar CK P DAG mo 13 MICRESS User Guide Volume III Post Processing C Chapter 5 ParaView 5 1 5 applying filters setting thresholds making sections he 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 opti
3. BC Chapter 4 DP MICRESS 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 he program does not allow switching between files i e it has to be restarted to display another result file 42 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 III Post Processing Chapter 4 DP MICRESS 4 2 1 The graphics window The output files are displayed in the graphics window 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 n
4. 34 Fig 4 16 The 3D menue MICRESS User Guide Volume III Post Processing C 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 vectors m tum ost Toggle on and off vector field display 3D b 3 Modify vector field display settings bts 8 1 j F Display vector field scale b x Bicolour vectors b b 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 Miscellanea 4 r r E MICRESS User Guide Volume III Post Processing 29 70 RE Chapter 4 DP MICRESS 4 2 14 Generating output Using the option output the following
5. Post processing exercises may be helpful to get better acquainted with the evaluation of MICRESS9 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 III Post Processing BC 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 lt 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 multicomponent 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 mult
6. DP MICRESS 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 Front 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 4 2 17 Data information he option data information offers the following features figures 4 22 and 4 23 Eo od 33
7. PAUS ii Dni De ecd daa uei a Cte noctes 60 9 1 Why can I not open a certain 3D output file by DP MICRESS 60 92 How to calculate the intf output eres en enne tenente nennen 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 ESRC SS A ai adea e euo uM II MD MIU 63 TEIBUB o aside tl 64 BE Chapter 1 How to use this manual 1 How to use this manual he 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 and gnuplot are discussed in the subsequent chapters Information is given about how to install these software tools and how to use their graphical interface he chapters also provide some examples of possible evaluation and visualisation that may be helpful when post processing MICRESS results Some
8. 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 Virtual EDX curves outputs for all time steps f you prefer text files for your further data processing go to Virtual EDX Output Virtual EDX text outputs for all time steps If you need virtual EDX outputs for certain time steps go to Virtual EDX 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 Virtual EDX curves outputs for selected time steps Virtual EDX Select outputs s 3 gt y Distance Figure 8 4 Generating virtual EDX output for selected time steps MICRESS User Guide Volume III Post Processing C Chapter 8 Post processing Exercises 8 4 Read multiple result files his example demonstrates how to treat multiple result files at a time First read simultaneously the result files for the concentration fields of C and
9. a preselected isoline for all time steps Virtual EDX output Data informations Miscellanea Figure 4 14 The DP MICRESS control panel Isolines MICRESS User Guide Volume III Post Processing RE Chapter 4 DP MICRESS a mapping of carbon conc1 b with isolines at c 1 02 1 01 c isoline contours only without isolines 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 III Post Processing R 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 selection of a sectional plane proceeds as follows fig 4 16 e Xy cutting plane xz cutting plane and yz cutting plane allow to select the plane to be displayed default XZ Dissociated plane e cutting plane up down _ increases decreases the mS m position of the cutting plane the Y coordinate by default XZ cutting plane 3 y YZ cutting plane 3 x e set cutting plane coordinate sets the position of the Cutting plane up 34u Cutting plane down 34d cutting plane the Y coordinate by default Sek cutting plane coordinate
10. 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 the command line by entering DP MICRESS VTK newfile vtk source phas Several source files can be specified e g conc1 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 Typical
11. e compare all outputs as compare results but for all time steps MICRESS User Guide Volume III Post Processing RE Chapter 4 DP MICRESS 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 the operating window e print information about geometry returns information about the geometry the actual zoom status and the symmetry in the operating window 78 Graphics Window 1 Display MICRESS TH File Edit View Mode Window Options Help all xl 50 090000 s 50 090000 s 0 5 Delta Gamma conc2 rncr Delta Gamma conc2 rmcr Figure 4 23 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 MICRESS User Guide Volume III Post Processing Wd Chapter 4 DP MICRESS 4 2 18 Miscellanea he options miscellanea and exit are characterised by the foll
12. 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 hree exercises will be presented separately within the next sections staring from post processing of 1 a single result file for a single time step ii a single result file with multiple time steps and iii multiple result files simultaneously 8 2 Readand 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 tog
13. 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 t Bijla MECRESS OP MIC Field b EDEN Delta Gant eine mer O e Era DELLA CARDA GOS er i 04397 di EE DE EE 4 o LE MES 28 TRE U g A Rn n RI LI ii 1 i uu i F d a ml i Lita P5 la LI TET LE polBrter 222323 lima ke Bs lounge we h JT Jer line by bolding down the pouse s leit butti T d E T ra Li FE 7 m m VISES RCE REESE ae alar srta he eiainn duen rhe LECT ARE OF Eo ling down E imale A O EL Angle degreeg 10 65 i Extrema and average Telia Gum cel mer E 30 0000 Bi oe Se pan a 1 Ail i TT flat ius ous n dd Average 1 03444 Heina Care a e pe ne cita Gamma GREE mei LE IT Figure 8 3 Extracting numbers with Data information coordinates field values angles distances extrema and average values Respective values are displayed in the operating window left MICRESS User Guide Volume III Post Processing C Chapter 8 Post processing Exercises 8 3
14. 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 e image from all time steps creates a series of images Ep mc for all time steps he images are written in the Next Previous folder where the corresponding MICRESS are to be found Image From current time step o i e write larger images creates larger size images with ona HITO ope a write larger images a toggle on off write high resolution images oth ASCII output From current O a e write high resolution images creates high resolution ASCII outputs For all time steps orb Raster ASCII output From current o r Images with toggle on off Raster ASCII outputs For all time steps o s5 Colour scale a c e ASCII output from current creates ASCII output for Output numbering on Image driver GIF o g Current time step at a defined path Image driver PostScript Accept default naming e ASCII output from ail time steps creates ASCII output for all time steps at the already specified path Virtual ED output Figure 4 18 e faster ASCII output from current creates ASCII Data informations The iden control l i anel output output for current time step at a defined path You Miscellanea p p should specify the desired grid spacing in um e faster ASCII output for all time steps creates ASCII output for all
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16. vector TIBIOS salida 29 4 2 14 Ec A D EE EM TP er 30 4 2 15 A qe A O ere 02 4 2 16 nuar PP tddineu ducta G 34 4 2 17 DAM MAIN a 30 4 2 18 ITI MANS Osea tet aad tet o E PU EC Ta 38 5 EA 39 5 1 Installing and running ParaView eese eeeeeeee rennen nennt rr 39 02 Usmo PATA W 41 5d Display surface or VO ME riada idear 41 kz o O duca ite sto 42 5 1 3 Colour by different results and attributes 43 SP MEN UI ES ANMA ON EET TS 44 5 1 5 applying filters setting thresholds making sections ssseee 45 LXI fo eec 46 S MEC SC M 46 6 2 Plotting data and fitting curves eseseeeeeneeeere rere ne eren nnne rre 48 53 Comparing different data n pce ire eii taut ts cta done bit eo iau 50 7 Data conversion mcr to vtk llleeeeeeeeeeeeenr ern nnnm nnn rana rana 51 8 Post nrocessing Exercises eee ecce ena incendie 53 8 1 Introduction to post processing exercises with DP MICRESS 53 82 Read and handle a single result file for a single time step 53 83 Read and handle a single result file for multiple time steps 56 8 4 Read multiple result II68 223 99 nita orici Vies RUP eria cid val vr ida cin hunni 57 9 Useful Information and
17. E AEE 58 Jn eC 30 pick UNME STED t0 Jump to with RHONE Mus 17 jn c tone 60 MID 17 report output Ml 17 SUID MM U 58 SO AE EAE ene oe ee ene oe eT ET E A ele et ore een en et T 18 umo 25 EA AP A E MM Id UEM NOISE 50 O O UNE TNR 58 MMI 22 virtual EDX output 34 SA NERO 39 49 ui 24 n eee 11 44 welt O T ta one 48 MICRESS User Guide Volume III Post Processing RE Chapter 11 Index PU e E A 44 astas 46 jn 46 Mi 44 dtd E 11 39 e E 41 e S E E TENA 41 Me es 43 ljtcm 49 IMO ST OE ECRIRE TREE RET CPK oq 49 DS OS PP rr ee e oli o A ees 43 EU SU Scan ecg o p Ui PERDU UTE E 43 SS Pe NA EA A EO Oe eee
18. GHUPLOT Version 4 4 patchlovel last modified Harch 010 Susten AS Hindows 32 bit Copyright C 1986 1993 1998 2004 007 2010 Thonas Hillians Colin Kelley and nany others gnuplot hone http HHH gnuplot info faq bugs etc type help seeking assistance inmediate help type help plot window hit h erninal type set to uxt grup lot MICRESS User Guide Volume III Post Processing RE Chapter 6 gnuplot 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 having 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 III Post Processing 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
19. 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 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 III Post Processing Chapter 8 Post processing Exercises In order to have the three panels in a horizontal line go to View set nr of panels and enter 3 for horizontal and 1 for vertical Zoom in at all results simultaneously with Display 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 plots independent of each other For that purpose fix the phase picture at 25 s his 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 pl
20. Next Previous Last First Jump Dissociated Scale MICRESS User Guide Volume III Post Processing es Distance between two points Wr Measure angle W a Measure angle with horizontal Ww h Measure angle with vertical MERT Coordinates Field value of a point w c a Chapter 4 DP_MICRESS e distance between two points measures the distance by drawing a line with the mouse hold the left mouse button The line length is shown in the operating window e measure angle measures angles by drawing two lines with the mouse select the left button of the mouse twice The angle is given in both degrees and radians in the operating window e measure angle with horizontai measures the angle to a horizontal line by drawing a line with the mouse The angle is given in both degrees and radians in the operating window e measure angle with vertical measures angles to a vertical line by drawing one line with the mouse he angle is given in both degrees and radians in the operating window e extrema and average from display defines the average and the extrema of the current time step he results are displayed in the operating window e coordinates field value of a point defines a point to be investigated by a mouseclick Also returns the number of the cell i e the cell pointer The results are displayed Figure 4 22 The DP MICRESS control panel in the operating window Data Information
21. a 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 III Post Processing C 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 Previous 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 Virtual EDX text output From current time step r t Virtual EDX text outputs for all time steps r u Virtual EDX scan position For current time step rci the corresponding MICRESS output files are to be found Virtual EDX scan position For all time steps rj Virtual EDX curve output From current time step r c A Virtual EDX curves outputs for all time steps r d e virtual edx Curves output from current time step generates d Virtual EDX curves output for all time steps r s Virtual EDX curves output for selected time steps r m graphics output of the field values along the scan line for the Front tracking text output r f u Front tracking c
22. and szzCV components of the stress tensor xxCV yy CV zzCV are the diagonal elements in the 2D 3D case sxyCV sxzCV syzCV are off diagonal terms torsion respectively This is true if the stress coupling is activated vM mcr gives out the von Mises stress when stress coupling Is activated Results for individual field variables calculated in extended 1D fields 1DExt AAA 1DExt_conc1 mer 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 1DTemp_Temp mcr gives the temperature when a 1D temperature field is used 1DTemp_enth mcr shows the enthalpy when a 1D temperature field is used 3 1 2 ASCII txt files Two different classes of MICRESS ASCII result files txt can be distinguished e special txt files e standard txt files MICRESS User Guide Volume III Post Processing RE Chapter 4 DP_MICRESS he meaning and content of these files is described in the following tables Special txt output files output Description OOOO 9 the input file corresponds to the driving file as understood by MICRESS gives information about the input data initial relinearisation output at initialisation or before the first nucleation CPU time and i
23. 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 he 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 eg plot Grain Growth TabK txt u 1 2 w lw 2 where u 1 2 indicates that column 2 of the table see fig 6 2 shall be plotted over column 1 by using a line w with line and the line width Iw shall be 2 gnuplot Command Line gnuplot gt cd CADesktopMesults Grain Growth gnuplot set nokey gnuplot gt set xlabel t gnuplot set ylabel R um gnuplot plot Grain Growth TabK txt u 1 2 w lw 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 replot f x w lines gnuplot print RO RO um gnuplot gt print k k gnuplot gt print m m gnuplot pause 1 MICRESS User Guide Volume III Post Processing Datei Bearbeiten Ansicht Ei f gen Format Du E 262 A X054 f Simulation Avg radius Gr density Grain Liquid Phase 1 1 ti
24. ation on the recrystallized fraction TabR txt Tab T txt reports information concerning the setting of the automatic time step when automatic time stepping has been selected TabTQ txt shows the temperature change with progressing simulation time and the corresponding CPU time TabO txt gives orientation information TQ txt 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 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 vik 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 variabie for all time steps while each vtk file comprises all field variables for only one time step A conversion of mcr files to vtk files is possible using the DP MICRESS tool see chapter 7 MICRESS User Guide Volume III Post Processing Fig 3 2 3 D Simulation of a an array of Mg dendrites with the results being saved and di
25. e c s the previous value Set number of steps c u Automatic number of steps c t e inverse colour scale inverts the colours Random colour scale c k ad le th farah Set seed random colour scale c p in the colour scale the colour for the Miscellenoa ac minimum value becomes the colour for Exit the maximum one and vice versa 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 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 in your scale Thus each of the colours will cover a wider range of values MICRESS User Guide Volume III Post Processing 19 70 RE Chapter 4 DP MICRESS 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 set seed random colour scale initialize random generator for random colour scale only for LINUX ta t S i 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 4 2 7 Run animations The option animation fig 4 8 has the following features MICRESS User Guide Volume III Post Pr
26. ei this function is disabled e replot replots the display e g following a parameter Set nb of panels vp cha nge Freeze panel v Replot vr e auto replot on off automatic replotting Senn et Fal bbb Resize vts l Auto resize onfoff 2 e resize and auto resize on off automatic resizing EMEN EUR Orientation L R lt gt B T 0 Increase thickness of colour scale v t Black lt gt white VW Enhanced 1D on off y 1 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 orientation l r lt gt b t the annotation position is switched from left right to bottom top and vice versa e increase thickness of colour scale tour 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 MICRESS User Guide Volume III Post Processing 22 70 Chapter 4 DP MICRESS 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
27. er 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 It reads result files in binary single and double precision native or not and ASCII 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 EJ Display MICRESS t BEH Display Transfer Convert Op About File s to be displayed Select Clear Standard Advanced Binary single precision v Use graphical interface Binary double precision Extrema from first last o ASCII Animate Last Compressed Panels x Non native binary result Row major Column major Display MICRESS Figure 4 1 The initial window of Display MICRESS 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 MICRESS User Guide Volume III Post Processing 12 70
28. erties 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 III Post Processing RE Chapter 5 ParaView Figure 5 1 A MICRESS 3D result output displayed using ParaView Figure 5 2 Opening a vtk file in ParaView left and the simulation domain right MICRESS User Guide Volume III Post Processing RE 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 domain changes its appearance D tware DaraView 3 A File Edit View Sources Filters Animation Tools Help EG ee SLOT EOI 29 Figure 5 3 The ParaView main menu bar the Volume feature MICRESS User Guide Volume III Post Processing RE Chapter 5 ParaView M 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
29. f 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 Krum mcr gives information about the interface curvature millx mcr also milly and millz lists the respective Miller indices mueS mcr gives information about the local interface mobility Orie mcr stores the 2D grain orientation 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 xU lists the stored energy SXXCV mcr also sxyCV sxzCV syyCV syzCV and szzCV components of the stress tensor xxCV yy CV zzCV are the diagonal elements in the 2D 3D case sxyCV sxzCV syzCV are off diagonal terms torsion respectively The output is available when stress coupling is MICRESS User Guide Volume III Post Processing x Chapter 4 DP_MICRESS temp mcr For the temperature in Kelvin when temperature coupling is activated It can be also used for plotting temperature distance profiles UXCV mcr also uyCV and uzCV They record the normal displacements when the stress coupling IS activated vel mcr gives out the interface velocity VXCV mcr also vyCV vzCV syyCV syzCV
30. fied 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 E Delta Gamma 1DExt conci mcr Delta Gamma 1DExt conc2 mcr E Delta Gamma iDExt geoF mcr Es Delta Gamma conci mcr Delta Gamma conc2 mcr Delta Gamma driv mcr E Delta Gamma geoF mcr Delta Gamma intf mcr Delta Gamma arie mcr Ed Delta Gamma phas mcr Delta Gamma rest mcr 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 5 Delta Gamma TabP txt Delta Gamma TabT txt E Delta Gamma TabTQ txt E Delta Gamma TQ txt Figure 3 1 An example of MICRESS output files MICRESS User Guide Volume III Post Processing 4 70 Sa 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 information 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 he meaning and content of these files is described in the following tables Special mer outp
31. for a closer look at the details e zoom out goes back to the larger view e toggle on off display of raster e special symmetry operations see separate chapter 4 2 10 Virtual EDX e display grid p y g IN Virtual EDX output e set nb of gridlines Data informations Miscellanea e display difference of two results Figure 4 11 ln The DP MICRESS control panel Display e logarithmic display of results e absolute value of results e toggle on off display of raster MICRESS User Guide Volume III Post Processing C Chapter 4 DP_MICRESS 4 2 10 Using symmetry operations Display length scale d 7 I Set length to be displayed d m e switch symmetry toggle through symmetry options sel iene ate p d z below Es hire to previous zoom settings d x itch symmetr d e three folded symmetry selects a 3 fold symmetry vicc tape E x Four folded symmetry d 4 ine Folded r d 9 e four folded symmetry selects a 4 fold symmetry adn ae d g 2 d h e nine folded symmetry selects a 9 fold symmetry Display difference of two results ded Logarithmic display of result s d n i Absolute value of results d a e symmetry type select symmetry type translational Toggle on and off display of raster d r symmetry or mirror symmetry see Figure 4 13 for some examples of symmetry operations Virtual EDX Virtual EDX output Data informations Miscellanea Figure 4 12 The DP MICRESS control panel view ori
32. ginal 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 III Post Processing C Chapter 4 DP_MICRESS 4 2 11 Handling isolines he option isolines fig 4 14 has the features e display isolines shows hides pre defined isolines see fig 4 15 e label isolines creates labels for the individual isolines Display isolines e auto IsOlines activates preset isolines see fig 4 15 Label isolines e add n auto isolines adds a number of n own isolines Auto isolines Add n auto isolines e remove an isoline removes a selected isoline Add an isoline Remove an isoline e remove all isolines removes all isolines Remove all isolines Display contours Print isolines values Bicolour isolines Write contour output e display contours shows only the contours see Figure 4 15 e print isolines values returns values of isolines in the operating ANON Write contour outputs i x e bicolour isolines changes the colour of the isolines black lt Vector field white e write contour output writes a txt file comprising the coordinates of a preselected isoline for the current time step Virtual ED e write contour outputs writes a txt file comprising the coordinates of
33. gle 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 set range MICRESS User Guide Volume III Post Processing A Chapter 8 Post processing Exercises Graphics Window 2 Display MICRESS cr MIORESS verrions 1 109 fem 09 90 2579 Dena C core 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 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 Herna TESO nan RAE PBI lel A ALE Bui Lituititit tjt jt Figure 8 2 Displaying isolines left and generating a virtual EDX right MICRESS User Guide Volume III Post Processing C Chapter 8 Post processing Exercises To label the isoline go to solines gt Label isolines You could zoom
34. i 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 handles e 1 2 and 3 dimensional calculation domains e arbitrary number of components phases and grains MICRESS User Guide Volume III Post Processing X Chapter 2 Introduction e solid solid and solid liquid interactions e anisotropy of grain boundaries mobility and energy MICRESS supports e coupling to thermodynamic database via the TO interface of Thermo Calc In the present MICRESS Vol 3 post processing you will find e anoverview 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
35. ich 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 MICRESSO result files using Irix or Windows naming conventions It can for example be called with DP MICRESS t Test Binaryphas lest ASCll phas f no argument is provided apart from t a summary of command line options is returned Alternatively you can use DP MICRESS t options i lnput File o Output_File Here i and o can be omitted if file names are specified in that order he 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 lo see how to open an existing vtk file in ParaView please refer to chapter ParaView MICRESS User Guide Volume III Post Processing RE Chapter 8 Post processing Exercises 8 Post processing Exercises 8 1 Introduction to post processing exercises with DP MICRESS This chapter presents a few
36. ly 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 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 MICRESS User Guide Volume III Post Processing 60 70 a Chapter 9 Useful information and FAQ s 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 jindual interfaces e 3 in 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 neighbour grid cells where one of the fractions is 0 or 1 In the remaining region the value of intf is 0 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
37. mages MICRESS User Guide Volume III Post Processing 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 III Post Processing BE Chapter 11 Index 11 Index Ie IV NG TREO RMTEu SAERmRm 11 SSI 28 TULLE LULL Rm 21 60 PSH aid 12 er LLU FEN RISO Rm 59 Colour Scale gps R 19 o PP foc A A teu DUUM UNUS EEE N E 59 COIS sc ce acetate o 36 data information ooo 36 tios 12 o MEEE 17 delante De Ween WO PONS 36 nn 36 17 A A 26 Jump to time step specihied Dy ES NUMDBI AA 17 Lo o 17 ULL 36 miscellanea and rias iaa aia eii aida loe cda 38 p O eee E E 17 JU NN feet E EE E A E A
38. me 3 micrometer micrometer 2 Number present Th a AUG Ta ME the radii are calculated from the average fractions asa 778 1 B8402BE 04 33 Ho Liquid 5 1 80556E 04 32 Ho Ligquid 52 1 7T7083E O4 51 No Lidquid LR 1 7T3611E 04 50 Ho Liquid 5 1 70135E O4 45 Ho Lidcguid 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 form f x RO k x m has been used as an example here fig 6 2 second part of the gnuplot commands 60 58 56 54 52 50 48 46 44 42 40 R rmm 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 labK txt u 1 2 via RO k m to start the fitting procedure After the optimal fit has been found the number of 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 MICRESS Use
39. n Y ey Replot scan line er e inescan X enter the desired coordinates of the line NOE TUN UR ae along which the scan shall be displayed Press the Normalise scans en Front tracking e f ENTER key The graphics window shows the line that Scan point 2s corresponds to the defined coordinates After that the scan is displayed Virtual EDX output i e Linescan Y similar to the option Linescan X but along 2 nr E Miscellanea the Y Axis e eplot scan line the scan line can be thus replotted mE Figure 4 19 The DP MICRESS control e hescan previously selected line the function Is self panel virtual EDX explanatory e Normalise scans Allows for normalising the diagrams to an Integral value of 1 Follow the command line for instruction e 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 MICRESS User Guide Volume III Post Processing 32 10 A Chapter 4 DP MICRESS 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 Gamm
40. 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 them better readable Use this Horizontal 2 function to shift from the default setting left to an Vertical 1 aligned configuration right O r d er R ow ma Or MICRESS User Guide Volume III Post Processing C Chapter 4 DP MICRESS 42 9 Selecting displayed items he menu display fig 4 11 offers the following features many of them being self explanatory Display length scale d e display length scale inserts a length scale into Set length to be displayed dem Flip length scale vertical horizontal d f the lower right corner of the display Zoom in d z Zoom out d y e set length to be displayea defi nes the length of Zoom back revert to previous zoom settings d x Switch symmetry d s the scale Three folded symmetry d 3 Four folded symmetry d 4 e flip length scale vertical horizontal selects Nine folded symmetry d 9 Symmetry type d c Display grid d g orientation of the length scale HEU pis Display difference of two results d d Logarithmic display of result s d n Absolute value of results d a Toggle on and off display of raster d r e zoom back revert to previous zoom settings e zoom in allows
41. ntermediate output at defined time steps txt files containing dedicated data EFC for the average and extrema of concentration in each phase when the TabC txt concentration coupling is activated TabD txt gives the diffusion coefficients at the corresponding tab log times when the concentration coupling is activated dTLat txt used for intermediate data relative to the release of latent heat TabF txt for the average fraction of each phase in the whole domain when the concentration coupling is activated TabCD txt contains information about the grain status i e whether a grain increases in dimensions TabK txt contains the number of grains his file is updated by default each time a grain Is set or disappears TabL txt 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 MICRESS User Guide Volume III Post Processing C Chapter 4 DP MICRESS TabLin txt it gives the temperature at defined time intervals for the temperature at the bottom and at the connecting points when linear flow trend used TabN txt stores data relevant for making Von Neumann Mullins plots TabP txt sums up the simulation time the CPU time the diffusion the seed the enthalpy the stress and the temperature times provides inform
42. ocessing C Chapter 4 DP MICRESS 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 ena animates the simulation starting from the actual time step up to its end al Colour scale y Animation C Anmain 2 Run animation atr settings are 2 repetitive runs and a time per section of 0 75 Animate to the end ate Animation settings a s e animation settings allows to set animation parameters time per section and number of repetitions Default seconds o alter these values click on the displayed values and enter new ones Virtual EDX Virtual EDX output Data informations Miscellanea Figure 4 8 The DP MICRESS control panel animation MICRESS User Guide Volume III Post Processing C Chapter 4 DP MICRESS 4 28 Setting view options he option view fig 4 9 has the features e Set nb of panels allows for shuffling of several results Previous into columns and rows he number of panels describes the amount of plots allowed per line and row If you enter 3 for horizontal and 1 for vertical and use a row major order results in a configuration like fig Dissociated 4 10 Toggle between previous and next to choose Colour scale which two consecutive plots shall be displayed rue e freeze pan
43. on 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 f 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 a QC dissociated ug 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 Figure 4 4 The DP_MICRESS control panel jump Next m n 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 Volume III Post Processing E 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 Jast 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 jump to time step specified by its number allows to jump to a specific output number not corresponding to
44. ons 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 d AR S E Figure 5 7 he ParaView bar for creating clips O Es uy QA RR 9 9f lao es 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 III Post Processing C Chapter 6 gnuplot 6 gnuplot gnuplot is a command line driven interactive function plotting utility for both Windows and Linux platforms The 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 6 1 Installing gnuplot File Plot Expressions Functions General Axes Chart Styles 3D Help
45. ot only the files Delta Gamma conc 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 conc1 mcr to Delta Gamma conctb mcr and then read these two files original and copy navigate them in dissociated mode and generate the difference between two different time steps v Graphics Window 1 Display MICRESS Figure 8 6 Simultaneous plot of three different result files in DP MICRESS MICRESS User Guide Volume III Post Processing d Chapter 8 Post processing Exercises Graphics Window 1 Display MICRESS GN E m hA i Figure 8 7 Dissociated navigation of multiple result files plotted simultaneously in DP_MICRESS The left and the middle figure show the concentrations of C and Mn at the time step of 30 s while the figure right shows the phase distribution at 79S LJ Graphics Window 1 Display MICRESS GN Ea Edit mm inde i E E 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 III Post Processing BE Chapter 9 Useful information and FAQ s 9 Useful Information and FAQs 9 1 Why
46. owing features e suspend GUI allows to show all options of key combinations Follow the command line for Instructions and information e remove output removes a selected time step from the output Important be careful the present result files will be overwritten e about provides information on Display MICRESS current version acknowledgements website for further information etc e exit terminates the program MICRESS User Guide Volume III Post Processing a Chapter 5 ParaView 5 ParaView 5 1 Installing and running ParaView he 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 oro ParaView 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 here 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 lo 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 Prop
47. 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 I 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 II 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 III Post Processing R Chapter 4 DP MICRESS Post Processing 3 1 Introduction to MICRESS Post Processing Before starting post processing make sure that the files 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 veri
48. r Guide Volume III Post Processing 49 70 6 3 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 replotas 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 plot to plot the first curve see figure 6 6 for syntax In that way different curves can be compared to each other Figure 6 7 gnuplot gt cd CADesktopMesults Gamma Alpha gnuplot gt set xlabel t gnuplot gt set ylabel cumulated CPU time gnuplot gt plot Gamma Alpha TabPtxt u 1 2 w gnuplot replot Gamma Alpha TQ TlabPtxt u 1 2 w Fig 6 6 Command line input for plotting and comparing data Gamma Alpha TabP txt u 1 2 Gamma Alpha TO 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 III Post Processing R Chapter 7 Data conversion mcr to vtk 7 Data conversion mcr to vtk As far as
49. splayed in the vtk format IES PRA T M NS CREER GST ONU QUINT Pi M T POS Ty SAAN 2 A x Lowe SSANMY NN n VASE MICRESS User Guide Volume III Post Processing Y Y LLJ aa 2 a O wT i D 2 Q L UO lf M 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_MICRESS Y d gnuplot Y d ParaView Y Fig 3 3 Categorisation of the currently available freeware for post processing of MICRESS results hese tools and their basic operation will be shortly introduced in the following chapters MICRESS User Guide Volume III Post Processing C Chapter 4 DP MICRESS 4 DP MICRESS 4 1 Installing DP MICRESS DP MICRESS is the graphical us
50. t 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 are 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 i
51. 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 dissociatea allows navigating viewing different result types independently at different time steps Fach 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 III Post Processing RE 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 maximal values are displayed in the graphics window e set range manual setting of the scales a predefined range for the individual results A yup median value and a range are displayed in the m Set min max s m graphics window SA ae e min max from display automatic setting of Min max From display std 2 Global min max 5g the scales for the individual results to the bcc eve e es en minimum maximum of the actually displayed result time step A median value and a range are displayed in the graphics window Virtual EDX i l Virtual EDX outp
52. 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 vtk format which can be done using DP MICRESS f Banane single precision Geometry He Binary double precision Compressed input C ASCII ox d Hm m o GU mao C d amp Hon o Ub o G UU O 20201 og gon 4 0 o g m E 1 g rono2oso l o Hg t i mma em E re ii MERE Select mielageriExamples Fiesulls Deka Gamma delta gamma vk Binary single precision C Binary double precision C ASO aaqa 1417 uuu aa 11277 x XI XI xl Xl I I xl E x X XI 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 III Post Processing a 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 vtk filter option at the bottom of the window Then another window will open where you can choose the time steps for wh
53. time steps at a defined path You should specify the desired grid spacing in um e colour scale saves selected colour scales as images e output numbering creates a numbered ordering of the output with toggle on off This is useful where filenames become too long otherwise MICRESS User Guide Volume III Post Processing 30 70 BRE Chapter 4 DP_MICRESS 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 III Post Processing RE Chapter 4 DP MICRESS 4 2 15 Virtual EDX 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 the instructions in the operating window he results are displayed in the graphics window see Figure 4 18 Select scan e g phas e Display scans for all time steps displays scans for a predefined line by display scan or linescan x y for all Display scan ed Display scans For all time steps ere time steps Keep an eye on the operating window for Tute css Instructions LineScan X ex LineSca
54. umber of cells in x y and z directions see e g Fig 4 2 insert multiplied by a scaling factor e g 1um 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 III 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 lt 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 processing your results You can switch among different options using the control panel he 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 III Post Processing C 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 animati
55. urve output rg current time step at a path specified by the user Scan point text output r p Scan point position output r q e virtual edx curves output for all time steps generates Scan point curve output c graphics output of the field values along the scan line for all time steps at the path where the corresponding MICRESS f aue TT rm 1 nanc Miscellanea Exit output files are to be found Figure 4 21 The DP_MICRESS control panel virtual EDX output 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 output Is generated for all times at a path specified by the user 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 MICRESS User Guide Volume III Post Processing 34 10 RC Chapter 4
56. ut e global min max automatic setting of the o E Data informations scales to the minimum maximum occurring in Miscellanea 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 III Post Processing C Chapter 4 DP MICRESS 42 6 Colour scales he option colour scale fig 4 6 provides following features e oop through colour scales displays the available colour scales e loop backwards through colour scales Previous same as above but displays the scales in a reverse order e select colour scale allows selection of Dissociated Scale Colour scale gt A mina m bam n i a colour scale e g after viewing them in one of the loop commands e fiddle with brightness amp contrast Loop through colour scales c cha nges brightness and or contrast Loop backwards through colour scales c m Select colour scale using the mouse Click on the graph to Fiddle with bright amp contr PIE activate the selected values Reset bright amp contr Cr Inverse colour scale c i e reset brightness amp contrast resets to Cut off min and max C C h Stepwise colour scal
57. ut files output Description 000 a geometry file being necessary for any post processing It stores information concerning geoF mcr o y MN quu the geometry of the simulation domain e g grid size cell dimensions etc his is file is used by any post processing program for the visualisation of results A a restart file that allows to restart continue a simulation rest mcr Results for the individual field variables 2D 3D for all output time steps in standard mcr files MICRESS User Guide Volume III Post Processing x Chapter 4 DP_MICRESS output Description concN mcr gives information about the concentration of the alloying element N cPhaN mcr similar to concN except for the interface regions where the concentration in a given phase is written out and not the mixture concentration 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 driv mcr gives the driving force for the growth of a grain with a higher number into a lower one frac mcr yields the fraction of solid fracN mcr shows the fraction of the phase N dGsp mer geoF mcr stores information concerning the geometry 1 e grid size cell dimension hStr mcr provides information about the hydrostatic stress when the stress coupling is activated int
58. 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 e select the inputs phas and conc1 in the OP menu Note phas shall be selected as the first and conc1 as the second file e select a non existing output name e specify an operation in Perl format such as if 2 1 0 else 7 e press Process he new result will be like the original concentration output but with the concentration value O along all grain and phase boundaries Combining different MICRESS outputs in general you could obtain any type of MICRESS User Guide Volume III Post Processing 61 70 a Chapter 9 Useful information and FAQ s 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 no

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