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-   -   Is it a bug Pressure increases with mesh density (https://www.cfd-online.com/Forums/openfoam-solving/59363-bug-pressure-increases-mesh-density.html)

mkraposhin October 24, 2007 08:42

Hi all! I found a strange b
 
Hi all!

I found a strange behaviour for turbFoam and rhoTurbFoam - when i increase/decrease mesh size - the pressure range increases/decreases too... I can"t explain this...

PLEASE, HELP ME!

benru October 24, 2007 09:06

Matvej, could it concerns with
 
Matvej, could it concerns with volume averaging ? Did you compare - using ParaView - p(-volumeAveraged-, as ParaView print under the coloure scale of measure) & p(-from cell-) ?

ruben

mkraposhin October 24, 2007 09:26

I'm not sure, i'm understandin
 
I'm not sure, i'm understanding You...

Here are my steps:

blockMesh . .
rhoTurbFoam . .
paraFoam . .

In ParaView panel "Information" we have entry for:
+ volInterpolate(p) - interpolated values of pressure fieldd in cells
+ cell(p) - discreete values of pressure in cells

So, boundary values of discreete pressure field and interpolated pressure field are the same?

where i'm wrong?

benru October 25, 2007 00:54

It seems allright... Boundary
 
It seems allright... Boundary should be the same.


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