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Forum: OpenFOAM

August 14, 2009, 04:19

Replies: 10

Problem with trimmed cells when calculating \nabla \cdot \nabla \cdot (U^TU)

Views: 2,199

Posted By nikwin

Together with skewCorrection the performance of...

Together with skewCorrection the performance of the calculation becomes considerably improved. However, on the StarCD mesh when calculating div(div(phiX,X)) the errors are still too large, getting...

Forum: OpenFOAM

August 12, 2009, 02:54

Replies: 10

Problem with trimmed cells when calculating \nabla \cdot \nabla \cdot (U^TU)

Views: 2,199

Posted By nikwin

Eugene, as you commented in the beginning and...

Eugene, as you commented in the beginning and from another input it certainly looks like it is the interpolation scheme that causes me trouble due to that the problematic cells are skewed. Instead of...

Forum: OpenFOAM

August 10, 2009, 04:22

Replies: 10

Problem with trimmed cells when calculating \nabla \cdot \nabla \cdot (U^TU)

Views: 2,199

Posted By nikwin

I've been trying to solve the issue but without...

I've been trying to solve the issue but without any real progress since the problem is beyond my programming skills.

Is it possible to get some more help to solve the problem? And, is this an...

Forum: OpenFOAM

August 6, 2009, 07:35

Replies: 10

Problem with trimmed cells when calculating \nabla \cdot \nabla \cdot (U^TU)

Views: 2,199

Posted By nikwin

Finally I got the debug version to work! ...

Finally I got the debug version to work!

But, it's showing that fvcDiv.C is called and then a lot of underlying files which I believe are not directly related to the calculation. However, I can't...

Forum: OpenFOAM

August 4, 2009, 07:22

Replies: 10

Problem with trimmed cells when calculating \nabla \cdot \nabla \cdot (U^TU)

Views: 2,199

Posted By nikwin

Thanks for your reply Eugene! Unfortunately,...

Thanks for your reply Eugene!

Unfortunately, surfaceScalarField cellCsurf(mesh.Cf() & mesh.Sf()); didn't change anything, in fact it gives exactly the same result!?

To give some more info, when...

Forum: OpenFOAM

August 3, 2009, 03:59

Replies: 10

Problem with trimmed cells when calculating \nabla \cdot \nabla \cdot (U^TU)

Views: 2,199

Posted By nikwin

Problem with trimmed cells when calculating \nabla \cdot \nabla \cdot (U^TU)

Dear all,

I would like to calculate the divergence of the convective term in the momentum equation which is as above, \nabla \cdot \nabla \cdot (U^T U) on a mesh converted from Star-CD, which...

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