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Forum: OpenFOAM Running, Solving & CFD

February 9, 2012, 18:03

Replies: 18

pisoFoam pressure issue

Views: 7,006

Posted By jmart7

It is diverging as well. The pressure gets up to...

It is diverging as well. The pressure gets up to 10^9

Forum: OpenFOAM Running, Solving & CFD

February 9, 2012, 16:56

Replies: 18

pisoFoam pressure issue

Views: 7,006

Posted By jmart7

Hello once again V and sorry to bother you once...

Hello once again V and sorry to bother you once again,

So I applied your suggestions, but I kept on getting the high number of iterations. My next step without redoing the mesh was to modify the...

Forum: OpenFOAM Running, Solving & CFD

January 30, 2012, 22:54

Replies: 18

pisoFoam pressure issue

Views: 7,006

Posted By jmart7

Thank you so much for these helpful hints. I will...

Thank you so much for these helpful hints. I will apply them and let you know how it goes. Thanks once again for your help V.

Forum: OpenFOAM Running, Solving & CFD

January 25, 2012, 17:19

Replies: 18

pisoFoam pressure issue

Views: 7,006

Posted By jmart7

I have been noticing from some LEShow dense LES...

I have been noticing from some LEShow dense LES meshes are, specially near inlets, so I will start refining my mesh. Another option that I have been thinking about is implementing a different...

Forum: OpenFOAM Running, Solving & CFD

January 25, 2012, 03:18

Replies: 18

pisoFoam pressure issue

Views: 7,006

Posted By jmart7

Here are the files. Regarding your last question,...

Here are the files. Regarding your last question, I use a supercomputer that is available to various universities for parallel computing, so I don't know exactly the physical connections they use, I...

Forum: OpenFOAM Running, Solving & CFD

January 24, 2012, 12:59

Replies: 18

pisoFoam pressure issue

Views: 7,006

Posted By jmart7

Thank you Anton for your help! Vesselin:...

Thank you Anton for your help!

Vesselin: First of all, thanks for your very helpful input. I'm kind of new to openfoam and RANS/LES simulations, but I'm learning a lot. So I guess obsessing over...

Forum: OpenFOAM Running, Solving & CFD

January 23, 2012, 02:00

Replies: 18

pisoFoam pressure issue

Views: 7,006

Posted By jmart7

Thanks for your suggestion! In pisoFoam I...

Thanks for your suggestion! In pisoFoam I decreased my deltat to get a Co of about 0.6 and changed to GAMG in the linear solver for p. This decreased 2 seconds on the time. I also tried pimplefoam...

Forum: OpenFOAM Running, Solving & CFD

January 20, 2012, 11:08

Replies: 18

pisoFoam pressure issue

Views: 7,006

Posted By jmart7

For pressure I am using PCG and for velocity...

For pressure I am using PCG and for velocity PBiCG. Also, I am using the backward implicit scheme for the time derivative. I had originally set the Co # to 2.5 because it gave me the highest...

Forum: OpenFOAM Running, Solving & CFD

January 19, 2012, 12:46

Replies: 18

pisoFoam pressure issue

Views: 7,006

Posted By jmart7

pisoFoam pressure issue

Hello everyone! I have been trying to simulate a scalar using pisoFoam, which is an incompressible transient solver. I modified the solver to solve for the scalar equation and it runs fine.

My...

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