[Gmsh] periodic, aka. conforming boundary meshes ?

[Zenker, Dr. Matthias]

Hi,

I try to answer although I am no gmsh developper. ;)
To my knowledge, the best there is at the moment is to use the "cut and merge faces" feature imported from Salomé which is available under Tools->Options->Geometry->General in the gmsh GUI. Check it and open your geometry file (e.g. a STEP file). If you are lucky, duplicated faces in your geometry will be recognized and merged. It doesn't work for all cases, so there is much room for improvement.
I am trying to write a postprocessor for such nonconformal meshes, but it is a very tedious work and not mature yet.
I don't know if there is any work on this subject in the gmsh team...

Matthias

Von: Benedikt Oswald [mailto:benedikt.oswald at psi.ch]
Gesendet: Mittwoch, 22. August 2012 10:45
An: gmsh at geuz.org
Betreff: [Gmsh] periodic, aka. conforming boundary meshes ?

Dear gmsh developers

I know I have asked about the state of periodic, aka. conforming boundary meshes,
in 3D a while ago. Is there any news on this ?

I recently compiled gmsh from svn and tried to mesh a simple cube-like structure that
requires conforming boundary meshes since it models a xy periodic electromagnet problem.
However, the periodic surface mesh is wrong, showing massive distortions, see below.

I would appreciate if you could comment on your development schedule regarding
periodicity.

Thanks, Benedikt



[cid:image002.png at 01CD805C.244B8CD0]

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Benedikt Oswald, Dr. sc. techn., dipl. El. Ing. ETH, www.psi.ch<http://www.psi.ch>, GFA
Paul Scherrer  Institute (PSI), CH-5232 Villigen, Suisse, benedikt.oswald at psi.ch<mailto:benedikt.oswald at psi.ch>, +41(0)56 310 32 12

"Passion is required for any great work, and for the revolution passion and audacity are required in big doses.",
 Ernesto 'Che' Guevara, Letter to his parents.
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