[Gmsh] Voronoi tessellation
David Colignon
David.Colignon at ulg.ac.be
Fri Dec 11 14:00:36 CET 2009
> Thank you for your advice.
>
> Then, user have to redefine all lines and surfaces by hand??
>
> or is there any option to merge the geometry automatically??
If you add
Coherence;
at the end of your .geo file, the duplicated lines will be removed.
I think the problem comes from lines 54 and 90 which are crossing each other and from surfaces 180 and 204 which are
partially superposed
Regards,
Dave
>
> I use 'Merge' in gmsh GUI, then too many error occur.
>
> Regards,
>
> Sang-yeop Chung
>
>
>
> 2009/12/11 David Colignon <David.Colignon at ulg.ac.be
> <mailto:David.Colignon at ulg.ac.be>>
>
> Hi,
>
> the problem is that most of your Lines are defined twice, for
> example, Line 63 from point 44 to 42, and Line 71 from point 42 to
> 44 ...
> If two triangles share a common edge/line, this common edge must be
> defined only once, and used in the definition of the Line Loop of
> the two surfaces.
>
> Regards,
>
> Dave
>
>
>
> --
> David Colignon, Ph.D.
> Collaborateur Logistique du F.R.S.-FNRS
> CÉCI - Consortium des Équipements de Calcul Intensif
> ACE - Applied & Computational Electromagnetics
> Sart-Tilman B28
> Université de Liège
> 4000 Liège - BELGIQUE
> Tél: +32 (0)4 366 37 32
> Fax: +32 (0)4 366 29 10
> WWW: http://hpc.montefiore.ulg.ac.be/
> Agenda:
> http://www.google.com/calendar/embed?src=david.colignon%40gmail.com
>
>
> On 11/12/09 08:02, 정상엽 wrote:
>
> Hi,
>
> Thank you for advice,
>
> But i have another question.
>
> To figure out geometry error, as you said,
>
> I made another voronoi geometry and meshing it (which is
> contained in
> the mail).
>
> but there is same message as follows:
>
> ...
> ...
> Info : Meshing volume 246 (Delaunay)
> Error : Self intersecting surface mesh, computing
> intersections (this
> could take a while)
> Info : 103 faces self-intersect
> ...
> ...
>
> Then i check the volume in the geometry,
>
> But nothing is wrong. All the volume are well defined.
>
> What should i do, or what is the wrong point in the geometry??
>
> How can i check it??
>
> I really appreciate your advice.
>
>
> Sang-yeop Chung.
>
>
>
>
> 2009/12/10 David Colignon <David.Colignon at ulg.ac.be
> <mailto:David.Colignon at ulg.ac.be>
> <mailto:David.Colignon at ulg.ac.be <mailto:David.Colignon at ulg.ac.be>>>
>
>
> Hi,
>
>
>
> --
> David Colignon, Ph.D.
> Collaborateur Logistique du F.R.S.-FNRS
> CÉCI - Consortium des Équipements de Calcul Intensif
> ACE - Applied & Computational Electromagnetics
> Sart-Tilman B28
> Université de Liège
> 4000 Liège - BELGIQUE
> Tél: +32 (0)4 366 37 32
> Fax: +32 (0)4 366 29 10
> WWW: http://hpc.montefiore.ulg.ac.be/
> Agenda:
> http://www.google.com/calendar/embed?src=david.colignon%40gmail.com
>
>
>
> On 10/12/09 07:18, 정상엽 wrote:
>
>
> Dear, Gmsh developer
>
> I made a voronoi geometry and meshing it using 'gmsh'.
>
> But when meshing the geometry, the error message
> represent as
> follows,
>
> ------------------------------------------------
> Error : Mesh generation error summary
> Error : 0 warning
> Error : 1 error
> Error : Check the full log for details
> -------------------------------------------------
>
>
>
> Hi,
>
> this is only the summary of the error message printed at the
> end.
> You have to search for the real error message in all the
> text that
> was printed before. And you will find something like:
>
> ...
> ...
> Info : Meshing volume 553 (Delaunay)
> Error : Self intersecting surface mesh, computing
> intersections
> (this could take a while)
> Info : 232 faces self-intersect
> Info : face (181 14 31) on model face 81
> ...
> ...
>
> That means that you have a problem in your geometry.
>
> If you look at your Volumes with Tools -> Visibility , you
> will see
> that most of your volumes are completely wrong !
>
> Regards,
>
> Dave
>
>
>
>
> How can i fix it, does it have problem in geometry??
>
> or it is impossible 3D meshing??
>
> I send you the geometry file.
>
> Thank you.
>
>
>
>
>
> _______________________________________________
> gmsh mailing list
> gmsh at geuz.org <mailto:gmsh at geuz.org> <mailto:gmsh at geuz.org
> <mailto:gmsh at geuz.org>>
>
> http://www.geuz.org/mailman/listinfo/gmsh
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> --
> Sang-Yeop, Chung
> Ph.D student.
> School of Civil and environmental Eng.
> Yonsei University, Seoul, Korea
> E-mail : sychung at yonsei.ac.kr <mailto:sychung at yonsei.ac.kr>
>