On Mon, Apr 29, 2019 at 6:02 PM Nikrouz <nikrouz....@gmail.com> wrote:
> Dear all libMesh users, > > I have produced a 3D msh file by Gmesh but I do not define any group > surface in Gmesh. > > In order to identify different faces, is there any class or method in > libMesh or it is neccsary to define id for msh file in gmesh? > > The mentioned faces will be used for boundary conditions. > Boundary conditions are specified by "Physical" groups in the gmsh input file. libMesh reads sections like the following: $PhysicalNames 5 1 2 "left" 1 3 "right" 1 4 "top" 1 5 "bottom" $EndPhysicalNames and converts them into named sidesets with the ids specified. You might also find this tutorial helpful: https://albertsk.files.wordpress.com/2012/12/gmsh_tutorial.pdf -- John _______________________________________________ Libmesh-users mailing list Libmesh-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/libmesh-users
