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robbirobocop November 3, 2011 05:08

snappyHexMesh Skewness error
1 Attachment(s)
Hi everybody,

I'm trying to successfully mesh a complex geometry including some nozzles with snappyHexMesh. Although everything seems to work smoothly and all boundaries out of the .stl files get added, one error always remains that is:

***Max skewness = 5.30808, 5 highly skew faces detected which may impair the quality of the results
<<Writing 5 skew faces to set skewFaces

Although I tried to play around with some parameters in the snappyHexMeshDict, it won't get better. For example increasing the max refinement level from 4 to 5 will even increase the number of highly skew faces from 5 to 7. Using "refineWallLayer" did not help either. So is there any possibility to avoid highly skewed (sur)faces? By the way, the snappyHexMeshDict file is attached.

The .stl file was a 2D Triangular Mesh from Salome, if that info is useful.

Since other posts did not help, any help would be appreciated.

wernsen November 25, 2011 20:45

This Error is not crucial. You can start and run the calculation with this minor problem.

It is also possible to view these skewed faces in paraview via include sets.

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