What does p mean in butterfly

grasshopper butterfly
1

Hello,

I saw that p stand for statique pressure divided by density of air in openFoam, anyone know what does p mean in butterfly ?

Thanks a lot !

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2

In OpenFOAM, the unit of pressure is kg/(m・s 2) for compressible flow and m2/s2 for incompressible flow. The current version of butterfly only calculates incompressible flow, so it is m2/s2.
This pressure is called kinematic pressure.
https://www.openfoam.com/documentation/guides/latest/doc/guide-applications-solvers-variable-transform-kinematic-pressure.html

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