PyFoam compares fields from the test case for 2 solver versions

starab · September 13, 2023, 03:33

Dear All,
I was not able to find such discussion in the forum.
We intend to adjust the solver and verify it against generic cases, say, by differences in velocity field.
I am sure that PyFoam is able to do it, but it comes with too short examples and manuals.
The example runPitzDailyBasic.py has in postRun-function comparison between data and reference data. But I do not understand, how this data extracted from the case.
Should I add velocity field from the specific time step to runInfo of CTestRun object? How?
Or should I save the velocity field without PyFoam and use it in comparison afterwards?

Thank you

starab · September 22, 2023, 05:47

Moving ahead but stuck with SamplePlot parsing sets (which drives comparison method).

My sets look like (in OF10)

sets(
data(
type lineUniform;
axis distance;
)

);

surfaces ();

fields ( p );

as result I see data.xy ascii-files per timestep with 2 columns: distance and p.

The command
pyFoamSamplePlot --dir=postProcessing/sample --info

returns list with steps, list with a single line, and unfortunately empty list of fields.

Why SamplePlot does not see the samples?

starab · September 22, 2023, 05:59

Moving ahead but stuck with SamplePlot parsing sets (which drives comparison method).

My sets look like (in OF10)

sets(
data(
type lineUniform;
axis distance;
)

);

surfaces ();

fields ( p );

as result I see data.xy ascii-files per timestep with 2 columns: distance and p.

The command
pyFoamSamplePlot --dir=postProcessing/sample --info

returns list with steps, list with a single line, and unfortunately empty list of fields.

Why SamplePlot does not see the samples?

September 13, 2023, 03:33	PyFoam compares fields from the test case for 2 solver versions	#1
starab New Member Alexander Join Date: Oct 2010 Posts: 5 Rep Power: 15	Dear All, I was not able to find such discussion in the forum. We intend to adjust the solver and verify it against generic cases, say, by differences in velocity field. I am sure that PyFoam is able to do it, but it comes with too short examples and manuals. The example runPitzDailyBasic.py has in postRun-function comparison between data and reference data. But I do not understand, how this data extracted from the case. Should I add velocity field from the specific time step to runInfo of CTestRun object? How? Or should I save the velocity field without PyFoam and use it in comparison afterwards? Thank you

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September 22, 2023, 05:47		#2
starab New Member Alexander Join Date: Oct 2010 Posts: 5 Rep Power: 15	Moving ahead but stuck with SamplePlot parsing sets (which drives comparison method). My sets look like (in OF10) sets( data( type lineUniform; axis distance; ) ); surfaces (); fields ( p ); as result I see data.xy ascii-files per timestep with 2 columns: distance and p. The command pyFoamSamplePlot --dir=postProcessing/sample --info returns list with steps, list with a single line, and unfortunately empty list of fields. Why SamplePlot does not see the samples?

September 22, 2023, 05:59		#3
starab New Member Alexander Join Date: Oct 2010 Posts: 5 Rep Power: 15	Moving ahead but stuck with SamplePlot parsing sets (which drives comparison method). My sets look like (in OF10) sets( data( type lineUniform; axis distance; ) ); surfaces (); fields ( p ); as result I see data.xy ascii-files per timestep with 2 columns: distance and p. The command pyFoamSamplePlot --dir=postProcessing/sample --info returns list with steps, list with a single line, and unfortunately empty list of fields. Why SamplePlot does not see the samples?