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Post Processing Lambda2 & Q criterion

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Old   April 11, 2020, 12:46
Default Post Processing Lambda2 & Q criterion
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Looking for the best way to output .vtk files for lambda2 and/or q-criterion vorticies. I would like vtk files as this could be fit into my python script for pvbatch. I am currently using v1912 and v6 of OpenFOAM. If someone could lead me in the right direction, that would be very helpful.
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Old   April 11, 2020, 13:30
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Might be starter?

https://www.openfoam.com/documentati...s-field-q.html
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Old   April 13, 2020, 13:37
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Quote:
Originally Posted by HPE View Post
Wow, do not know how I missed this...Thanks!
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Old   April 13, 2020, 15:14
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There are lots of guidance missing in OpenFOAM unfortunately, but you can fill the dots in a reasonable time by using the resources from the community that I do share by the links below.
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Old   April 20, 2020, 12:31
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Okay, still on this topic but a little more detailed. I looked through the documentation and didn't see an answer to this.

I use what I call surface_isosurfs to output my q-criterion iso surface. The surface looks to be cell-based (blocky as it matches the mesh) instead of point-based (more smooth). Is there a better way to do this?
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