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[snappyHexMesh] Block with surface

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Old   August 16, 2019, 08:01
Default Block with surface
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Hi all,

I'm quite new in the meshing stuff, so snappyHexMesh is a bit confusing for me.

I try to create a volume with a rough surface.
With blockMesh I created a Mesh with the extension of 510x510x0.06. nx=ny=510, nz = 8.
Now I try to create a rough surface by two STL files, top and bottom with a z-information at every point of the mesh. Each STL has a lateral extension of 512x512 (larger than the created mesh).

The problem now is, that my lateral boundaries/borders look really bad with long elements in z-direction AND/OR totally missing elements.

The surfaceCheck says, that my surfaces are fine.

I attached the blockMeshDict and snappyHexMeshDict. The surface-files are to large for uploading.

I think it's just the settings for snappyHexMesh, but I don't really know which parameters I have to adjust. So maybe somebody could have a quick look?

Thanks in advance.
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Last edited by runer; August 16, 2019 at 09:52. Reason: Added a screenshot of a mesh with invalid boundaries.
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