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General understanding of postprocessing in paraFoam |
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October 15, 2015, 05:38 |
General understanding of postprocessing in paraFoam
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#1 |
Member
Join Date: Jul 2015
Location: Aalborg
Posts: 83
Rep Power: 10 |
Hi everyone,
I want to get values out of my simulations for a mesh-independence study. No problem: 1. Insert a slice 2. Insert a Filter "Integrate variables" 3. Attribute "Cell Data" 1. As far as I understood, I have to divide the value by the area at that position, is that correct? 2. The pressure, that is defined in 0/p and given in paraFoam in the filter e.g. is the relative static pressure, right? 3. Do I have to multiply that pressure with density to receive the correct pressure? Sorry for these basic questions, but I do not want to make stupid mistakes! |
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October 16, 2015, 05:10 |
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#2 | |
Senior Member
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Hi,
Let me respond to your questions: Quote:
2. If you are running an incompressible solver: yes. You can also find it in the dimensions of your 0/p file. If it reads [0 2 -2 0 0 0 0] you have kinematic pressure (pressure divided by density). If it reads [1 -1 -2 0 0 0 0] you have absolute pressure. OpenFOAM uses relative pressure in incompressible cases, but absolute pressure in compressible cases. 3. (Like in 2.): yes if incompressible Regards, Tom |
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October 20, 2015, 02:08 |
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#3 |
Member
Join Date: Jul 2015
Location: Aalborg
Posts: 83
Rep Power: 10 |
Hi Tom,
thank you very much for your reply! It's nice to know, that I was on the right path |
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