hi again, thanks for the answer. Let-me explain my problem with a example. If I make a cube, I can label the faces (with Physical groups) that are on the boundary so that all nodes that are in these faces will be labeled too. Perfect, that's what I want, because with this I can impose the Dirichlet boundary conditions in my fem code. The problem is: and nodes that are in the corners of the cube ? these nodes belong to three faces that may have different labels, and how to decide which face does he live ? that is why it would be desirable to add a label to them in medit file.
This detail can deteriorate a solution of a lid-driven cavity problem, for example. Thanks, Felipe, Brazil 2010/7/18 Geordie McBain <[email protected]> > 2010/7/17 Felipe Montefuscolo <[email protected]>: > > Dear Gmsh developer, > > When I export a mesh to *.mesh file format, I choose the option "element > > tag->Physical entity" (and uncheck the "Save All") to use the labels of > the > > elements as a boundary conditions in my FEM code. My question is if one > can > > change the > > label that appear in the list of vertices (zero in Gmshv2.42 and > Elementary > > entity in Gmshv.nightly) to Physical entity, as > > is already the case to the list of Edges and Triangles when I choose the > > option "element tag->Physical entity". > > At http://www.geuz.org/pipermail/gmsh/2010/005446.html I read > > `We could not save physical tags, as you can have more than one per > entity.' > > but I wonder whether in such cases just putting one, any one, might be > satisfactory? (Though I don't have a use for node tags myself.) > -- Felipe Montefuscolo
_______________________________________________ gmsh mailing list [email protected] http://www.geuz.org/mailman/listinfo/gmsh
