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[snappyHexMesh] distorting internal mesh on a pipe when snapping

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Old   December 2, 2020, 12:49
Default distorting internal mesh on a pipe when snapping
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Hello,

I am trying to run an MPPIC simulation on a pipe but have ran into an issue that is new to me when trying to generate the mesh. My block mesh is roughly square and when i run snappy the first pass before snapping the mesh after removing external cells is still nicely orthogonal inside. however after it snaps the mesh to the surface it is creating highly distorted areas inside of the mesh (surface mesh is still good).

I have tried messing with a bunch of the mesh quality setting and increasing the surface refinement on my geometry but can't seem to get it to work.

Has anyone ran into this before/know how to fix it?

Thanks,
Attached Images
File Type: jpg first pass.jpg (16.2 KB, 35 views)
File Type: jpg after snap.jpg (19.4 KB, 38 views)
Attached Files
File Type: txt snappyHexMeshDict.txt (2.1 KB, 2 views)
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