[Gmsh] Meshing fails without apparent reason

[Christophe Geuzaine]

> On 23 Jun 2020, at 18:53, Bruno Agostini <bruno.agostini at gmail.com> wrote:
> 
> Dear Gmsh community,
> 
> I am trying to 3D mesh the here attached Schwarz-D surface, but the meshing fails complaining about boundaries not being recovered, which does not help me to solve this problem. I think there are no overlapping facets, and the geometry is not particularly complicated, so I am stuck here. Any ideas?

1) the STEP file already contains a volume, so 

Surface Loop(1) = Surface{:};
Volume(1) = {1};

in your .geo file will lead to overlapping volumes

2) The volume in the STEP file is made of surfaces that do intersect: see attached picture

So there's no hope in trying to mesh the volume as-is...

Christophe


> 
> Best regards
> 
> Bruno
> <mesh_boundary.geo.opt><mesh_boundary.geo><7_x_fin_T.msh><7_x_fin_T.zip>_______________________________________________
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— 
Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science 
http://www.montefiore.ulg.ac.be/~geuzaine



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