[Gmsh] Line mesh inconsistent with volume mesh

[Christophe Geuzaine]

Marc Duflot wrote:
> Hi,
> 
> I think I found a bug in the mesh generation with gmsh 2.3.0 (and some
> earlier versions).
> 
> Please open the attached files (mesh and point-of-view):
> 
>   gmsh beam-230.msh pov.opt
> 
> You will see that the node 2845, created during the volume mesh
> generation, is not snap back on the geometrical edge 24. Consequently,
> the line element from node 10 to 378 is inconsistent with the volume and
> surface meshes.
> 
> Using netgen or sligthly modyfing the characteristic lengths solve the
> problem.

Hi Marc - Yes, it's a known bug. When the volume mesh modifies the 
surface mesh we currently do not check if the curve mesh has also to be 
modified (it can be, although in relatively rare cases).

We're working on it.

Christophe

> 
> Thank you,
> Marc
> 
> 
> 
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-- 
Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science
http://www.montefiore.ulg.ac.be/~geuzaine