I need to plot residual in openfoam when calculating
What steps should I do?
Thank
Use pyfoam. Once it is installed, just run a simulation in this manner
for exampl: pyFoamPlotRunner.py icoFoam (if icoFoam is your solver).
Otherwise write the residuals in a log file:
icoFoam > log | tail -f
and then read them with gnuplot or Xmgrace
xmgrace log
Have you checked these videos on youtube?
https://www.youtube.com/watch?v=ngyBbYn5-V0
https://www.youtube.com/watch?v=diCbJMUjZlk
This link may help you:
http://www.cfd-online.com/Forums/openfoam-solving/64146-tutorial-how-plot-residuals.html
I like using foamMonitor.
Have a look at Section 6.3.4 (Live monitoring of data) in the User Guide.
Regards.
Hi,
different approaches are available:
1. Use "pyFoam" a Python tool of OpenFOAM which allows you to solve this task and more than this;
2. Use "gnuplot" that is already delivered with linux;
3. Use "foamMonitor" an OpenFOAM tool;
4. Write a code in python which extract the residual values from the log file of your run.
Best regards
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