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Forum: OpenFOAM Running, Solving & CFD

September 26, 2006, 15:59

Replies: 44

Pressure instability with rhoSimpleFoam

Views: 26,340

Posted By daniel_mills

Does anyone have anything else

Does anyone have anything else we can try on this? We get the low wave pressure mode on both rhoTurbFoam and rhoSimpleFoam. It always develops in the channel(cylinder). It always develops after the...

Forum: OpenFOAM Running, Solving & CFD

September 22, 2006, 08:02

Replies: 44

Pressure instability with rhoSimpleFoam

Views: 26,340

Posted By daniel_mills

Thank you very much for your r

Thank you very much for your replies,

We get the same thing when upwinding all values and I have tried playing with the tolerances of pressure, it still develops a unstable pressure wave.
...

Forum: OpenFOAM Running, Solving & CFD

September 21, 2006, 12:35

Replies: 44

Pressure instability with rhoSimpleFoam

Views: 26,340

Posted By daniel_mills

Even though this should be a l

Even though this should be a low mach number(<0.3) would it still make sense to experiment with the pressureTransmissive outlet BC since it seems to be a growing oscillating pressure wave in a...

Forum: OpenFOAM Running, Solving & CFD

September 20, 2006, 09:48

Replies: 44

Pressure instability with rhoSimpleFoam

Views: 26,340

Posted By daniel_mills

Alright I can easily believe t

Alright I can easily believe that the problem is in my setup somewhere. Maybe someone would be so kind as to spot where my potential problems are. I will post my checkMesh, fvSolution, fvSchemes, and...

Forum: OpenFOAM Running, Solving & CFD

September 19, 2006, 15:03

Replies: 44

Pressure instability with rhoSimpleFoam

Views: 26,340

Posted By daniel_mills

I have noticed when someone as

I have noticed when someone asks a question about stability problems in rhoSimpleFoam or density correctors in steady state solvers they are never answered. Here are two other posts posing similar...

Forum: OpenFOAM Running, Solving & CFD

September 18, 2006, 15:52

Replies: 44

Pressure instability with rhoSimpleFoam

Views: 26,340

Posted By daniel_mills

We have a need to run a pressu

We have a need to run a pressure\density based compressible steady state solver. I have been fighting with rhoSimpleFoam for a few weeks now.

We would like to be able to specify:
2 inlets...

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