On 31/07/10 20:31, Alexey Vasyukov wrote:
Hi all.
I'm trying to use gmsh to construct 3D mesh from initial 2D surface
mesh. With some initial surface meshes it works and with others gmsh
crashes or hangs. You can find example meshes and steps to reproduce
problems in Trac - https://geuz.org/trac/gmsh/ticket/88
Could anybody point me in right direction how to fix it?
I've looked at your files a bit more closely. They all work OK with the
Delaunay. They cannot work with the Frontal algorithm because the
surface mesh should be oriented with outward pointing normals in that
case. Gmsh tries to orient the mesh correctly, but it does so "surface
by surface". In your example the boundary of the volume is a single
surface ("1") with non-coherent triangle orientations, so Gmsh cannot
orient the triangles correctly.
Best regards,
Alexey Vasyukov
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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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