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pimpleDyMFoam - strange pattern in velocity

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Old   May 2, 2015, 09:50
Default pimpleDyMFoam - strange pattern in velocity
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Hey

i'm trying to simulate a vertical axis wind turbine in openFoam. Therefore I use the pimpleDyMFoam solver (OpenFoam 2.3.0). Between the stator and the rotor i defined a cyclic AMI with the transform settings: noOrdering.

After it wasn't possible to run this case with an unstrctured mesh (it diverged every time) I made a new hex mesh.

Now everything is runing. But unforturnately my velocity looks really strange.

I tried so many different scheme and fvSolution, cyclic AMI settings but nothing helps. I also made a mesh refinement.

Have you ever seen this problem? I am getting a bit desperate

Thanks,
Conny
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Old   May 6, 2015, 08:26
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By increasing the nOrthogonalCorrectors from 1 to 10 the pattern disappeared.
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