Hi Folks, I have a question about using 1D mesh (of an immersed structure) in 2D (fluid domain) simulation. I am importing GMSH file to read linear elements (EDGE2) making the surface of a circle, such that I get
mesh.read_mesh(gmsh_filename); and int dim = mesh.mesh_dimension; // dim == 1 In my simulation I want to enquire the orientation of the normal vector of the edge elements. What would be the correct FEBase and QRule to construct to get normal vector in 2D. I am doing the following: const int bdry_mesh_dim = 1; libMesh::UniquePtr<FEBase> fe_bdry(FEBase::build(2, fe_type)); libMesh::UniquePtr<QBase> qrule_bdry = QBase::build(QGAUSS, bdry_mesh_dim, CONSTANT); fe_bdry->attach_quadrature_rule(qrule_bdry.get()); /// Loop over bdry_mesh_elems fe_bdry->reinit(elem); const std::vector<libMesh::Point>& bdry_normals = fe_bdry->get_normals (); I get error with fe_bdry->reinit(elem) saying that EDGE2 is not supported. If I build fe_bdry with dim of 1 it proceeds, but bdry_normals is just of dimension 1. What should I be doing instead? Thanks, -- --Amneet _______________________________________________ Libmesh-users mailing list Libmesh-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/libmesh-users