How to interpolate 'mesh.V()'

victorconan · August 2, 2012, 09:47

I wanna get a valid term to multiply by fvc::snGrad(p) to get the presseure on the surface of a cell. Literally, 'mesh.V()' should be interpolated, but fvc::interpolate(mesh.V()) is invalid, how can I realize it? Please help me!
I tried to use: volScalarField Vmesh(mesh.V()); fvc::snGrad(p) * fvc::interpolate(Vmesh). but it is invalid as well.

Bernhard · August 3, 2012, 03:44

I don't really get it. Why can't you fvc::interpolate(p) to get the pressure at the face? Am I missing something here?

victorconan · August 3, 2012, 05:25

Quote:

Originally Posted by Bernhard

I don't really get it. Why can't you fvc::interpolate(p) to get the pressure at the face? Am I missing something here?

Sorry, I made a mistake. Actually, I wanna get: interpolate(grad(p))*mesh.V(), which is flux instead of pressure, similar to pEqn.flux() but I wanna an interpolated value; so I think maybe I can get this by fvc::snGrad(p) * interpolate(mesh.V()); but I am confused now how to interpolate mesh.V().
Could u help me? THANKS～

August 2, 2012, 09:47	How to interpolate 'mesh.V()'	#1
victorconan New Member Lun Yu Join Date: Aug 2012 Posts: 8 Rep Power: 14	I wanna get a valid term to multiply by fvc::snGrad(p) to get the presseure on the surface of a cell. Literally, 'mesh.V()' should be interpolated, but fvc::interpolate(mesh.V()) is invalid, how can I realize it? Please help me! I tried to use: volScalarField Vmesh(mesh.V()); fvc::snGrad(p) * fvc::interpolate(Vmesh). but it is invalid as well.

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August 3, 2012, 03:44		#2
Bernhard Senior Member Bernhard Join Date: Sep 2009 Location: Delft Posts: 790 Rep Power: 22	I don't really get it. Why can't you fvc::interpolate(p) to get the pressure at the face? Am I missing something here?