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Forum: OpenFOAM Running, Solving & CFD

November 9, 2012, 06:50

Replies: 26

pisoFoam with k-epsilon turb blows up - Some questions

Views: 11,197

Posted By tomf

Hello Heroic, Well Ansys CFX uses different...

Hello Heroic,

Well Ansys CFX uses different numerics, so it is no guarantee that if it works in Ansys it will work in OpenFOAM, generally. If your Co number ramps up that fast, than I think your...

Forum: OpenFOAM Running, Solving & CFD

November 8, 2012, 04:04

Replies: 26

pisoFoam with k-epsilon turb blows up - Some questions

Views: 11,197

Posted By tomf

Hi Heroic, If the sudden increase in the...

Hi Heroic,

If the sudden increase in the courant number is not caused by the flow reaching some point where this could be explained I think that your settings should be okay from the time...

Forum: OpenFOAM Running, Solving & CFD

November 6, 2012, 05:48

Replies: 26

pisoFoam with k-epsilon turb blows up - Some questions

Views: 11,197

Posted By tomf

Hello Heroic, Been busy past few, days, but...

Hello Heroic,

Been busy past few, days, but this line in your log may give you a first clue:

Courant Number mean: 0.000945477 max: 1.4992

It means your maximal courant number is too high. I...

Forum: OpenFOAM Running, Solving & CFD

November 1, 2012, 03:37

Replies: 26

pisoFoam with k-epsilon turb blows up - Some questions

Views: 11,197

Posted By tomf

Dear Heroic, Probably this line in your...

Dear Heroic,

Probably this line in your checkMesh report is the most important:

Overall domain bounding box (-6535.35 -380 -2.98023e-05) (16000 8077.06 7933)

It says your domain is about...

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