On 01 Feb 2013, at 09:56, "Zenker, Dr. Matthias" <[email protected]> wrote:
> Hi, > > the problem of nonconformal mesh at volume interfaces is still not resolved > (see old posts below); the “cut and merge faces” algorithm works only in > simple cases. I would like to know if there is work going on to solve this > problem within gmsh. A full solution would have to be able to treat partially > overlapping faces of arbitrary shape. > > What is your point of view regarding this problem? > Nothing new for us on that front... (unfortunately) > Thank you, > > Matthias > > ---------------------------------------------------------------- > Von: Zenker, Dr. Matthias > Gesendet: Mittwoch, 26. September 2012 13:05 > An: 'Jean-François Remacle' > Cc: [email protected] > Betreff: AW: [Gmsh] import external-generated geometry in gmsh > > Hi, > > the problem of nonconformal mesh at volume interfaces is really annoying. > > I have tried to find a solution by processing a surface mesh with a scilab > script, cutting and merging duplicated interfaces, redefining the volumes and > doing the 3D mesh in gmsh. My tool is not mature yet since the handling of > partially overlapping surfaces is not working like it should. But it works > for duplicated surfaces which are identical, even in cases when the “cut and > merge faces” recently implemented in gmsh fails. > > Do I understand correctly from the message below (“We can imagine to modify > the algorithm and mesh series of connected volumes together.”) that there is > a solution within gmsh in sight? Is there actually work going on at this > field? > > If I can contribute to a solution, I would be glad to do so. > > Best regards, > > Matthias > > > Von: Jean-François Remacle [mailto:[email protected]] > Gesendet: Mittwoch, 26. September 2012 11:10 > An: [email protected] > Cc: [email protected] > Betreff: Re: [Gmsh] import external-generated geometry in gmsh > > > Le 25 sept. 2012 à 08:59, [email protected] a écrit : > > Hello Prof. Geuzaine > hello Prof. Remacle, > > i have a question to your great tool gmsh: > > Is there any possibility to generate a three-dimensional geometry (with > several domains (=different materials) with an external software > then import and mesh it with gmsh? > > > Yes : we handle STEP, BREP and IGES inputs. > > I have tried this with freeCAD and exported a brep-file of my geometry but > the problem is that common faces of volume bodies in the geometry > was saved twice (each belongs to one domain) and so the gmsh' > mesh-algorithmus was not able to mesh the domains correctly. > > > It is possible that freecad outputs volumes that have one face in common and > that face is duplicated. In this case, our basic 3D mesh > actually fails because all volumes are meshed together and this particular > situation generates duplicated points. We can imagine to > modify the algorithm and mesh series of connected volumes together. Another > way is to save volumes separately with freecad, mesh > them and merge meshes. > > Maybe there is another way, generating a 3D-geometry (should be scriptable) > and match the domains with material properties so that getdp could solve the > problem. > > Do you have any ideas or hints? > > Thanks in advance for your help > > Best regards from south-germany > Stefan Kremer > > > Dipl.-Phys. Stefan Kremer > Strategic Productmanagement > > Schöck Bauteile GmbH > Vimbucher Straße 2 > 76534 Baden-Baden > > Tel. +49 7223 967-204 > Fax +49 7223 967-7204 > Mobil +49 173 5717495 > [email protected]_______________________________________________ > gmsh mailing list > [email protected] > http://www.geuz.org/mailman/listinfo/gmsh > > ------------------------------------------------------------------ > Prof. Jean-Francois Remacle > Universite catholique de Louvain (UCL) > Ecole Polytechnique de Louvain (EPL) - Louvain School of Engineering > Institute of Mechanics, Materials and Civil Engineering (iMMC) > Center for Systems Engineering and Applied Mechanics (CESAME) > Tel : +32-10-472352 -- Mobile : +32-473-909930 > > > > > > > > > > _____________________________________________________________________ > ERBE Elektromedizin GmbH > Firmensitz: 72072 Tuebingen > Geschaeftsfuehrer: Christian O. Erbe, Reiner Thede > Registergericht: Stuttgart HRB 380137 > > _______________________________________________ > gmsh mailing list > [email protected] > http://www.geuz.org/mailman/listinfo/gmsh -- Prof. Christophe Geuzaine University of Liege, Electrical Engineering and Computer Science http://www.montefiore.ulg.ac.be/~geuzaine _______________________________________________ gmsh mailing list [email protected] http://www.geuz.org/mailman/listinfo/gmsh
