2015-04-23 21:54 GMT+0200, Christophe Geuzaine <[email protected]>: > >> On 14 Apr 2015, at 10:24, marco restelli <[email protected]> wrote: >> >> Dear all, >> I am unable to control the tetrahedra orientation in an extruded 3D >> mesh. >> >> More in details: consider the following .geo file. If I set >> "Transfinite Right" or "Left" for the surfaces 18 and 26, which are >> two of the sides generated during the surface extrusion, this >> orientation is followed by the 2D grids, but seems to be ignored by >> the 3D grid, which has a rather irregular pattern. Is there a way to >> control the 3D grid orientations? >> > > Unfortunately, no: there's no way to guarantee the orientation in a general > geometrical configuration. The seemingly random orientations you observe are > die to swaps that are performed to recover the boundary mesh.
OK, thank you. Could I try to control these orientations by changing the vertex and/or line ordering of the surface that I am extruding? Marco _______________________________________________ gmsh mailing list [email protected] http://www.geuz.org/mailman/listinfo/gmsh
