[Gmsh] Gmsh aborted in the middle of 3D mesh
Christophe Geuzaine
geuzaine at acm.caltech.edu
Wed Oct 6 09:10:55 CEST 2004
C. D. Wang wrote:
> I tried to 3D mesh this simple cube when Gmsh was aborted suddenly. the
> .gmsh-errors file said :
>
> Info : Mesh 2D complete (0.055991 s)
> Info : Mesh 3D...
> Info : Meshing volume 1000
> Info : CalcLocalH: 686 Points 0 Elements 1368 Surface Elements
> Info : Check subdomain 1 / 1
> Info : 1368 open elements
> Fatal : ERROR: Edge 1 - 9 multiple times in surface mesh
> Info : Writing log file '/home/cynthiaw/.gmsh-errors'
>
> Can anyone please tell me what I did wrong? Thank you!
>
Cynthia - Your example works just fine with Gmsh's original isotropic 3D
algorithm. With the Netgen algorithm, you need to orient all your
surfaces with exterior pointing normals. Just replace
Surface Loop(200)={100,103,101,105,-102,-104};
with
Surface Loop(200)={-100,-103,-101,-105,102,104};
and everything should be okay.
Cheers,
Christophe
--
Christophe Geuzaine
Applied and Computational Mathematics, Caltech
geuzaine at acm.caltech.edu - http://geuz.org