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How to do post-processing without GUI for large case?

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Old   August 28, 2013, 15:46
Default How to do post-processing without GUI for large case?
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Hi guys,

I need to plot some profile, contours, etc. for a large case (mesh > 20M), it is very slow to do it with paraView GUI, so how can I do it using command line? e.g., plot the velocity profile vs channel height. Tons of thanks in advanced.

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Old   August 29, 2013, 12:45
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Goncalo Pedro
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Hi

I suggest taking a look at the various sampling methods available in foam.

Check out the example sampleDict in the following directory.
applications/utilities/postProcessing/sampling/sample

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Old   August 30, 2013, 10:12
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Quote:
Originally Posted by gonpe View Post
Hi

I suggest taking a look at the various sampling methods available in foam.

Check out the example sampleDict in the following directory.
applications/utilities/postProcessing/sampling/sample

Goncalo
Hi Goncalo,

Thanks very much for your reply. I prefer do the post-processing after the simulation. I might need to plot some iso-surface contour, it might be hard to do it using sample...

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Old   August 30, 2013, 11:44
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You can sample after the simulation. This is done by calling "sample".

There is an iso surface option in the sampleDict but I must confess I haven't tried it. You can output to VTK format which you can open in paraview.

If you are focussed on using paraview, I suggest using pvbatch. I haven't needed to use it up to now but take a look at
http://www.paraview.org/Wiki/ParaView/Users_Guide/Batch_Processing

You can load a state file and output from there.

Goncalo
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