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Forum: OpenFOAM Running, Solving & CFD

February 17, 2011, 16:20

Replies: 44

Pressure instability with rhoSimpleFoam

Views: 26,317

Posted By ptbs

Hi Alberto I think neither RhoPisoFoam nor...

Hi Alberto

I think neither RhoPisoFoam nor rhoPimpleFoam have a concept of porous zone, am I right?

I will try wave transmissive BC's but how to set it is not clear for me. Any suggestion?
...

Forum: OpenFOAM Running, Solving & CFD

February 17, 2011, 14:04

Replies: 44

Pressure instability with rhoSimpleFoam

Views: 26,317

Posted By ptbs

Hi Alberto Are you sure? I made a research...

Hi Alberto

Are you sure? I made a research like that on my PC:
grep -r nUCorrectors /opt/openfoam171 | grep rhoPorous
and found always nUcorrectors. Moreover, I found it from haukurtReport...

Forum: OpenFOAM Running, Solving & CFD

February 17, 2011, 13:30

Replies: 44

Pressure instability with rhoSimpleFoam

Views: 26,317

Posted By ptbs

I can understand it can help, but real life is...

I can understand it can help, but real life is not always symmetric...Unfortunately, my actual case is not symmetric, and with a porous area...

Forum: OpenFOAM Running, Solving & CFD

February 17, 2011, 02:18

Replies: 44

Pressure instability with rhoSimpleFoam

Views: 26,317

Posted By ptbs

Many thanks to all of you Alberto and Aerotherm. ...

Many thanks to all of you Alberto and Aerotherm.
I will have a look at your comments and I am very interested hearing even more from you if you make some more tests on this case.

Concerning the...

Forum: OpenFOAM Running, Solving & CFD

February 16, 2011, 13:02

Replies: 44

Pressure instability with rhoSimpleFoam

Views: 26,317

Posted By ptbs

RhoPorousSimpleFoam case with instability

Hi Alberto

Here it is. I follow your suggestion and place a complete case very similar in boundary conditions as the one I try to solve, and run it Sunday evening. This case presents all the...

Forum: OpenFOAM Running, Solving & CFD

February 13, 2011, 05:19

Replies: 44

Pressure instability with rhoSimpleFoam

Views: 26,317

Posted By ptbs

Hello Alberto Well, the case I am studying...

Hello Alberto

Well, the case I am studying is quite big and absolutely confidential. So, I will try to make another model, oversimplified but that could recreate this behavior.

However, in...

Forum: OpenFOAM Running, Solving & CFD

February 13, 2011, 04:59

Replies: 44

Pressure instability with rhoSimpleFoam

Views: 26,317

Posted By ptbs

Hello aerothermal Thanks for answering. I...

Hello aerothermal

Thanks for answering. I have tried in my next iterations to use "divSchemes div(phi,U) Gauss limitedLinearV 1.0" instead of "Gauss upwind", as you suggested but using, as...

Forum: OpenFOAM Running, Solving & CFD

February 12, 2011, 06:59

Replies: 44

Pressure instability with rhoSimpleFoam

Views: 26,317

Posted By ptbs

Hi aerothermal I have the same problem with...

Hi aerothermal

I have the same problem with pressure instability with RhoPorousSimpleFoam inducing speed oscillations (up to crash). I made a research with your name on this CFD Online forum and...

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