[Gmsh] Error : Self intersecting surface mesh, computing intersections (this could take a while)

Wed Jul 20 13:08:32 CEST 2011

Hi Adrien

I have heard of FreeCAD http://sourceforge.net/projects/free-cad/, but I didn't test it.
I don't know anything about cylindrical coordinates in gmsh.

Matthias

________________________________
Von: Adrien Girard [mailto:cassel.girard at gmail.com]
Gesendet: Mittwoch, 20. Juli 2011 11:29
An: Zenker, Dr. Matthias
Cc: gmsh at geuz.org
Betreff: Re: [Gmsh] Error : Self intersecting surface mesh, computing intersections (this could take a while)

Is there a good CAD software free on linux ?

And if I re-design the structure on GMSH, can I use cylindrical coordinates ? And how ?
Thank you very much for yours answers,

Adrien

2011/7/20 Zenker, Dr. Matthias <Dr.Matthias.Zenker at erbe-med.com<mailto:Dr.Matthias.Zenker at erbe-med.com>>
Hi Adrien,

the problem might be that you have several bodies whose outer faces overlap.
If you have only planar faces in your model, you can try to activate "Cut and merge faces" under Tools->Options->Geometry->General. This might clean those overlaps.
If not - well, I am actually working on a solution for curved faces, but it is not mature yet.
If you have the possibility to remove those duplicate outer faces in your CAD, this is certainly the best solution.

HTH,

Matthias

________________________________
Von: Adrien Girard [mailto:cassel.girard at gmail.com<mailto:cassel.girard at gmail.com>]
Gesendet: Mittwoch, 20. Juli 2011 09:04
An: gmsh at geuz.org<mailto:gmsh at geuz.org>
Betreff: [Gmsh] Error : Self intersecting surface mesh, computing intersections (this could take a while)

Hi everybody,

I passed yesterday afternon, trying to fixe it but I found nothing.

For my master thesis I have to compute centrifugale force on a micro-compressor. I have not design it myself but I can redesign it, if its needed (but I prefer not).
When I 3D mesh it, I have an error message :

Error : Self intersecting surface mesh, computing intersections (this could take a while)

But, only the 2D mesh is available.

What can I do ?

Adrien

PS : Sorry for my poor english.

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