Hullo everybody, the problem is (as far as I know), that when you assign a surface to a physical group, you don't have control on the number of the group, which is automatically assigned by Gmesh. If I understand what Umberto is saying (which is the same thing that would be useful in my case), it would be nice to have the possibility of explicitly assigning these integer flags to surfaces (or groups of surfaces), in order to specify boundary conditions.
Regards, Alessandro -----Messaggio originale----- Da: [email protected] [mailto:[email protected]] Per conto di David Colignon Inviato: giovedì 24 ottobre 2013 13.02 A: Umberto Iemma; [email protected] Oggetto: Re: [Gmsh] Integer flag to .msh elements On 24/10/13 11:57, Umberto Iemma wrote: > > First, I'd like to thank the authors for the wonderful work they are doing ! > Gmsh is one of the most useful free technical tools ever! > Thanks! > > After this, I have a question. > > It is possible to include in the .msh file a integer flag to each element ? > I need this to specify particular physical properties of the boundary. Hi Umberto, you should use Physical groups for that purpose, see http://geuz.org/gmsh/doc/texinfo/gmsh.html#Elementary-vs-physical-entities "Groups of elementary geometrical entities can also be defined and are called physical entities. These physical entities cannot be modified by geometry commands: their only purpose is to assemble elementary entities into larger groups, possibly modifying their orientation, so that they can be referred to by the mesh module as single entities. As is the case with elementary entities, each physical point, physical line, physical surface or physical volume must be assigned a unique identification number. " and tutorial t1.geo, http://geuz.org/gmsh/doc/texinfo/gmsh.html#t1_002egeo Regards, Dave -- David Colignon, Ph.D. Collaborateur Logistique du F.R.S.-FNRS CÉCI - Consortium des Équipements de Calcul Intensif ACE - Applied & Computational Electromagnetics Université de Liège Sart-Tilman B28 10, Grande Traverse 4000 Liège - BELGIQUE Tél: +32 (0)4 366 37 32 WWW: http://www.ceci-hpc.be/ > > I'm the coordinator of the open-source project AcouSTO > http://acousto.sourceforge.net, a tool for acoustic simulation. I'm > going to release soon version 1.6 including the possibility to read Gmsh files. > Everything is working fine and the release candidate could be issued > now, but this additional possibility would broaden significantly the > field of application. > > Thanks in advance, > Umberto > > ***************************************************************** > Prof. Umberto IEMMA > Associate Professor of Aerospace Structures and Design > Dip. di Ingegneria - Universita' Roma Tre > via Vito Volterra 62, 00146 Roma > tel. +39-0657333274 fax +39-065593732 > www : http://acousto.sourceforge.net > ***************************************************************** > > > > > > > > > > _______________________________________________ > gmsh mailing list > [email protected] > http://www.geuz.org/mailman/listinfo/gmsh > _______________________________________________ gmsh mailing list [email protected] http://www.geuz.org/mailman/listinfo/gmsh _______________________________________________ gmsh mailing list [email protected] http://www.geuz.org/mailman/listinfo/gmsh
