Post Processing Lambda2 & Q criterion

plucas · April 11, 2020, 12:46

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.

HPE · April 11, 2020, 13:30

Might be starter?

https://www.openfoam.com/documentati...s-field-q.html

plucas · April 13, 2020, 13:37

Quote:

Originally Posted by HPE

Might be starter?

https://www.openfoam.com/documentati...s-field-q.html

Wow, do not know how I missed this...Thanks!

HPE · April 13, 2020, 15:14

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.

plucas · April 20, 2020, 12:31

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?

April 11, 2020, 12:46	Post Processing Lambda2 & Q criterion	#1
plucas Senior Member Anonymous Join Date: Dec 2011 Location: USA Posts: 108 Rep Power: 14	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.

April 11, 2020, 13:30		#2
HPE Senior Member Herpes Free Engineer Join Date: Sep 2019 Location: The Home Under The Ground with the Lost Boys Posts: 932 Rep Power: 12	Might be starter? https://www.openfoam.com/documentati...s-field-q.html plucas likes this. __________________ The OpenFOAM community is the biggest contributor to OpenFOAM: User guide/Wiki-1/Wiki-2/Code guide/Code Wiki/Journal Nilsson/Guerrero/Holzinger/Holzmann/Nagy/Santos/Nozaki/Jasak/Primer Governance Bugs/Features: OpenFOAM (ESI-OpenCFD-Trademark) Bugs/Features: FOAM-Extend (Wikki-FSB) Bugs: OpenFOAM.org How to create a MWE New: Forkable OpenFOAM mirror

April 13, 2020, 15:14		#4
HPE Senior Member Herpes Free Engineer Join Date: Sep 2019 Location: The Home Under The Ground with the Lost Boys Posts: 932 Rep Power: 12	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. Chanikya_Valeti likes this. __________________ The OpenFOAM community is the biggest contributor to OpenFOAM: User guide/Wiki-1/Wiki-2/Code guide/Code Wiki/Journal Nilsson/Guerrero/Holzinger/Holzmann/Nagy/Santos/Nozaki/Jasak/Primer Governance Bugs/Features: OpenFOAM (ESI-OpenCFD-Trademark) Bugs/Features: FOAM-Extend (Wikki-FSB) Bugs: OpenFOAM.org How to create a MWE New: Forkable OpenFOAM mirror

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