[Zappstar]

Hello!

I am using CAELinux2013. Is there an easy way to see (Plot) the residuals while calculation is running ? I would like to know if the residual is steady or unsteady without manually reading the log file.

Regards,

Peter

[zfaraday]

Hello Peter,

In order to be able to view residuals plotted on the fly I recomend you to install PyFoam.

Regards,

Alex

[Zappstar]

Hello and Thank you!

Installed and done! But now comes the question, how do i run it? to i have to use foamjob? Or can i look at the residual from my log file named listing made from Code-Saturn? How would i run that in terminal if i for instance want to use pyFoamPlotWatcher ? I have manage to run python shell in terminal, what is the next step?

regards, peter

[zfaraday]

There's no need to use foamJob, Peter. Just type pyFoamPlotWatcher.py <log file name> and enjoy your foaming!

regards,

alex

[Zappstar]

Hello and thank you!

when i am in the logg file directrory i type,

python
pyFoamPlotWacher.py listing (have tried pyFoamPlotWacher.py <listing>)

and i get "SyntaxError: invalid syntax File"<stdin>", line1"

what am i doing wrong?

regard, Peter

[zfaraday]

Well I see what your problem is. You don't really need to enter the python shell, pyFoam applications work without that. I will try to explain more accurately the steps to create the residuals plot (more plots will be created).

Imagine you are running a case using icoFoam solver. You proceed this way to create the log file:

icoFoam > log.icoFoam 2>&1

Then you just have to type in the terminal the following statement:

pyFoamPlotWatcher.py log.icoFoam

Note: you don't have to wait until the solver finishes, you can run pyFoamPlotWatcher on the fly while the solver is runing.

EDIT: Remember, if in doubt you can always invoke an application with the -help flag to see all its options and modes of use.

Hope it helps.


Regards,

Alex

[Zappstar]

Hi again, and thank you for your instructions it feels like i am getting closer.

I am using simpleFoam and therefor tried,

simpleFoam > log.simpleFoam 2>&

I attach my log file below, The directory, that simpleFoam is trying to find does not exist. I can not find much in simpleFoam -help

regards,


/*---------------------------------------------------------------------------*\
| ========= | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox |
| \\ / O peration | Version: 2.1.1 |
| \\ / A nd | Web: www.OpenFOAM.org |
| \\/ M anipulation | |
\*---------------------------------------------------------------------------*/
Build : 2.1.1-221db2718bbb
Exec : simpleFoam
Date : Oct 08 2014
Time : 16:29:59
Host : "peter-VirtualBox"
PID : 12775
Case : /home/peter/Project/Skyware/Parabol_0deg/PARABOL_CGNS/RUN1/RESU/20141008-1618
nProcs : 1
sigFpe : Enabling floating point exception trapping (FOAM_SIGFPE).
fileModificationChecking : Monitoring run-time modified files using timeStampMaster
allowSystemOperations : Disallowing user-supplied system call operations

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
Create time



--> FOAM FATAL IO ERROR:
cannot find file

file: /home/peter/Project/Skyware/Parabol_0deg/PARABOL_CGNS/RUN1/RESU/20141008-1618/system/controlDict at line 0.

From function regIOobject::readStream()
in file db/regIOobject/regIOobjectRead.C at line 73.

FOAM exiting

[zfaraday]

As per what the message says there is no controlDict file in the system directory of your case "20141008-1618". If this is not the name of your case maybe you are executing the solver in the wrong directory... If this is your case directory, then you missed the controlDict file within the system directory.

[Zappstar]

peter@peter-Sigma:~/OpenFOAM/peter-2.3.x/run/Skyware$ pyFoamPlotWatcher.py log
PyFoam WARNING on line 235 of file /home/peter/OpenFOAM/PyFoam-0.6.2/lib/python2.7/site-packages/PyFoam/Applications/PyFoamApplication.py : $WM_PROJECT_VERSION unset. PyFoam will not be able to determine the OpenFOAM-version and behave strangely

gnuplot> set terminal x11
^
line 0: unknown or ambiguous terminal type; type just 'set terminal' for a list


gnuplot> set terminal x11 noraise
^
line 0: unknown or ambiguous terminal type; type just 'set terminal' fo

[alexeym]

Hi,

http://www.cfd-online.com/Forums/ope...-problems.html

(there's Search functionality, you know)

About $WM_PROJECT_VERSION: are you sure your environment was set up? What's the output of

$ export | grep WM_

command?