[mohammad]

Hi everyone,

I know that PyFoamPlotRunner shows the residuals while a file is running.
However, I'm trying to plot the AreaAverage of pressure at the inlet of a domain while the simulating is running.

I have calculated the surface average within the "controlDict" by:

inletAvePressure
{
type surfaceFieldValue;
libs (fieldFunctionObjects);
enabled yes;
writeControl timeStep;
writeInterval 1;
log yes;
writeFields no;
regionType patch;
name inlet;
operation areaAverage;
weightField phi;
fields ( p );
}

Could anybody let me know how to plot this value during the run?

Best,

[tomf]

Hi Mohammad,

If you run on any modern version of OpenFOAM this will probably work from the command line:

foamMonitor postProcessing/inletAvePressure/0/surfaceFieldValue.dat

Please note that the 0 assumes you started the monitor and the simulation from time=0.

foamMonitor -h

shows the usage.

Running in the background can be useful.

Hope this helps,
Best Regards,
Tom

[mohammad]

Originally Posted by tomf

Hi Mohammad,

If you run on any modern version of OpenFOAM this will probably work from the command line:

foamMonitor postProcessing/inletAvePressure/0/surfaceFieldValue.dat

Please note that the 0 assumes you started the monitor and the simulation from time=0.

foamMonitor -h

shows the usage.

Running in the background can be useful.

Hope this helps,
Best Regards,
Tom

Thanks Tom for your great help.

For future readers:

I was also able to use the "gnuplot" in a new terminal to read the results from the "log" file.

Best

[Vivio]

Hi mohammad,

Another thing you can do, if you're using PyFoam, is to create a file called "customRegexp" in the run directory, containing a regular expression to parse the log for the quantity you want to plot. PyFoamPlotRunner will pick up the regular expression automatically and plot your result live alongside the residuals.

Best regards,
Vivio