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Forum: OpenFOAM Running, Solving & CFD

December 9, 2011, 03:33

Replies: 9

buoyuantSimpleFoam & Boundaries

Views: 1,507

Posted By robbirobocop

Maybe you should post your schemes/solution files...

Maybe you should post your schemes/solution files and of course your BC's.
Maybe the reason for the simulation blowing up is something else.

Forum: OpenFOAM Running, Solving & CFD

December 9, 2011, 03:30

Replies: 9

buoyuantSimpleFoam & Boundaries

Views: 1,507

Posted By robbirobocop

That's cool. Does this mean your case...

That's cool.

Does this mean your case explodes with buoyantPressure for walls as well? Or does your case converge within the 100 iterations?

Forum: OpenFOAM Running, Solving & CFD

December 8, 2011, 04:44

Replies: 9

buoyuantSimpleFoam & Boundaries

Views: 1,507

Posted By robbirobocop

I only gave buoyantSimpleFoam a quick try back...

I only gave buoyantSimpleFoam a quick try back then so I am not an expert there.

But usually you only fix the pressure at the outlet and use zeroGradient for the inlet.

I at least do it this...

Forum: OpenFOAM Running, Solving & CFD

December 8, 2011, 04:24

Replies: 9

buoyuantSimpleFoam & Boundaries

Views: 1,507

Posted By robbirobocop

I would try zeroGradient for U at the outlet. ...

I would try zeroGradient for U at the outlet.

pressureInletOutletVelocity calculates the velocity by the pressure you assigned.
Based on the mass inflow let's say with 150 kPa you get 3.98E-06...

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