[Gmsh] Getting rid of small faces and features

Christophe Geuzaine cgeuzaine at uliege.be
Fri Jul 3 08:22:43 CEST 2020

Dear Hannes,

Indeed the best way would be to clean up the CAD. But the "Compound" feature can also help: see e.g.



> On 29 Jun 2020, at 16:21, Hannes Kröger <hannes at kroegeronline.net> wrote:
> Hi All,
> I created the mesh (2D) shown below from some CAD model.
> The CAD model has a lot of strip-like faces which gmsh meshes very brave and treats their boundaries as feature curves. Unfortunately, the surface is later one side of a contact zone in FEM and I suspect these tiny faces to cause trouble.
> The specified minimum mesh size is larger than these strips so this setting is obviously not enough. Is there a way to make the cells span these tiny strip faces?
> PS: I'm aware there is a repair feature in OpenCASCADE. Although this removes the strip faces visually, I can no longer mesh the geometry after repair and only error appear.
> <cijebbfdhebppgpf.png>
> Thanks for any hint.
> Regards, Hannes
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Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science 

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