[adbuerger]

Hello everyone,

I'm pretty new to the topic of CFD as well as to the software STAR-CCM+, and I hope that somebody in this forum can help me solve my problem:

Over the last two weeks, I ran a simulation that in addition to the autosaves files generated png pictures from a specific scene. Now I realized that I would need the visualization of additional scenes, and I could get them from the autosaved files. But since there are several hundred saved files, I would not want to open every file and generate the pngs by hand, but would like to use a builtin-function (if there is one for this task) or a script for this (while I do not know exactly how to script STAR-CCM+).

Does someone of you know an elegant solution for this, or can point out to me how this could be achieved?

Any suggestions are highly appreciated! Thank you very much for your help!

[kguntur]

Hello,

This is what you could do -
1- open one of the files.
2- record a java macro and to all the things you want to do i.e. open a scene, display parts, save the PNG, and save the sim file. (and any other operations that you want to do on all the files)
3- use batch commad to open each sim file and run the above java macro.

the batch command goes something like this
installation directory\starccm+ -batch javafile.java simfile.sim

installation directory is where your starccm+is installed.
in notepad, write the above command for all your files and save it as .bat file.
double click this and it will be done.

you could also use a "loop" within the batch file to loop all your files, if you are good at that.

hope this helps !!

[adbuerger]

Originally Posted by kguntur

Hello,

This is what you could do -
1- open one of the files.
2- record a java macro and to all the things you want to do i.e. open a scene, display parts, save the PNG, and save the sim file. (and any other operations that you want to do on all the files)
3- use batch commad to open each sim file and run the above java macro.

the batch command goes something like this
installation directory\starccm+ -batch javafile.java simfile.sim

installation directory is where your starccm+is installed.
in notepad, write the above command for all your files and save it as .bat file.
double click this and it will be done.

you could also use a "loop" within the batch file to loop all your files, if you are good at that.

hope this helps !!

I recorded the java macro, and now invoke STAR-CCM+ with the batch argument you provided for every sim-file from within a Python script using the subprocess module, while the script also handles e. g. renaming the new png-files. One can even run multiple macros per call if you pass them as a comma-separated list (without blank spaces in between!).

The main, relevant part now looks something like this

import subprocess

for k in list_of_files:

    p = subprocess.Popen([ \
        "/opt/CD-adapco/STAR-CCM+9.06.011-R8/star/bin/starccm+", \
        "-batch", \
        "/path/to/macro1.java,/path/to/macro2.java", \
        "/path/to/file" + k])

    p.communicate()

just if someone maybe needs this as well in the future.

It works like a charm! You just saved me a lot of time, thank you very much!

[kguntur]

Cool. but you can use the following code instead of using python script.
for /f "delims=|" %%f in ('dir /b yourfolder\*.sim') do C:\Program Files\CD-adapco\STAR-CCM+9.04.009\star\bin\starccm+ -batch %%f location\javamacro.java

copy paste that code into a notepad file. Edit the bold part with your values and save the file as .bat
double click this file. And you are done.

This will run the specified macro on all *.sim files in "Your Folder".

[adbuerger]

Originally Posted by kguntur

Cool. but you can use the following code instead of using python script.
for /f "delims=|" %%f in ('dir /b yourfolder\*.sim') do C:\Program Files\CD-adapco\STAR-CCM+9.04.009\star\bin\starccm+ -batch %%f location\javamacro.java

copy paste that code into a notepad file. Edit the bold part with your values and save the file as .bat
double click this file. And you are done.

This will run the specified macro on all *.sim files in "Your Folder".

That's right of course, I used Python for this since I'm simply just much more familiar with it :-) But I think your second post can help other people looking for this, also because your explanations show how to do this on Windows, so thanks again!