[Gmsh] Voronoi geometry

[David Colignon]

Hi,

you have first to check one by one all the volumes you define. If you define only volume 142 and try to mesh it, yet 
Gmsh detects an error (only with the Delaunay 3D meshing algorithm, with frontal it looks fine).

The same applies to volume 134... If you mesh it alone with Delaunay, Gmsh complains, but if you mesh it just with 
Volume 142, there is no more problem... This show that there must be some problems.

After that you have to check every pair of volumes which share one or more common face, to detect where the problem 
comes from.

But obviously, the biggest problem is that the faces 58, 59, 60, 62 from volume 136 are partially superposed with faces 
139, 130, 131, 132 of volume 142 ! ! !

Regards,

Dave


-- 
David Colignon, Ph.D.
Collaborateur Logistique du F.R.S.-FNRS
CÉCI - Consortium des Équipements de Calcul Intensif
ACE - Applied & Computational Electromagnetics
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Université de Liège
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On 16/12/09 12:51, 정상엽 wrote:
> Dear gmsh developer,
>
> Hi, I correct the geometry by eliminating duplicated lines and surfaces,
>
> but when i meshing it into 3D, the error as follows:
>
> ....
> ....
> Meshing volume 142 (Delaunay)
> Error   : Self intersecting surface mesh, computing intersections (this
> could take a while)
> Info    : 12 faces self-intersect
> Info    : face (65 67 59) on model face 9
> Info    : face (67 59 68) on model face 10
> Info    : face (49 50 55) on model face 37
> Info    : face (49 47 55) on model face 39
> Info    : face (49 54 50) on model face 44
> ....
> ....
>
> Since, i check all geometry then eliminate duplicated surfaces which
> constituted with same line loop (either '+' or '-')
>
> by coding my own code.
>
> After the error message represents, I check the geometry script, but i
> cannot find which is overlapped or duplicated with
>
> face 9, 10, 37..and so on, as the error message said. How can i find the
> error and collect it??
>
> And what is the exact problem of this geometry??
>
> Or is there any way to automatically generate 'voronoi geometry ' using
> only gmsh??
>
> Thank you for your help.
>
>
> Sang-yeop chung
>
>
>
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