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[snappyHexMesh] Bad snap on baffle edges

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Old   March 12, 2020, 05:26
Default Bad snap on baffle edges
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Sita Drost
Join Date: Mar 2009
Location: Arnhem, The Netherlands
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Hi all,

I'm trying to mesh a sail geometry, which I import into snappyHexMesh (OF7) from an stl-file. As the geometry has zero thickness, I'm treating it as a baffle. Even though I'm using explicit feature snapping (and the extracted edges look nice and smooth), in the final mesh the edges of my sail turn out rather badly (see attached images).

What I've tried so far:
- Refining the background mesh
- Refining the edge mesh
- Refining the surface mesh
- Increasing/decreasing resolveFeatureAngle
- Playing around with settings in snapControls (nSmoothPatch, tolerance, nSolveIter, nRelaxIter, nFeatureSnapIter)
- And probably some more things which I can't even remember...

None of these settings seem to make much of a difference though. Is there something that I'm missing/doing wrong?

Any tips would be appreciated!

EDIT: Anyone? I'm perfectly aware that this looks like a problem that has been solved before, and that there should be answers somewhere on this forum. It's just that I can't find anything specifically on baffles, and the other answers didn't help me so far.
Attached Images
File Type: jpg bad_snap.jpg (48.3 KB, 10 views)
File Type: jpg bad_snap2.jpg (15.7 KB, 10 views)

Last edited by sita; March 18, 2020 at 09:10.
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