2/12/2023 0 Comments Fenics and gmsh![]() Meshio.write("unit_square_gmsh.xdmf", meshio. # If mesh contains the physical group of dimension dimĭim_tags = (num_nodes - 1)Įlement_type, element_tag, node_tag = (dim, tag)Įlement_tags = ele_num] = tag ![]() # since nodes are numbered starting from 0 Problem with loading mesh to Fenics generated by Gmsh Hi everybody, I am trying to load to Fenics a 3D mesh generated with Gmsh. Points = numpy.reshape(coord, (int(coord.size / dim), dim))Įlement_types, element_tags, node_tags = ()įor num, element in enumerate(element_types): # Map from gmsh to type that is also used by meshio Mvc_from_array = dolfin.MeshValueCollection("size_t",Ĭell_data) Python Gmsh API import gmshįrom dolfin import (MPI, MeshValueCollection, cpp) Points, cells, cell_data, boundary = mesh.points, mesh.cells, mesh.cell_data, mesh.field_data P3 = geom.add_point(, lcar=mesh_ele_size) P2 = geom.add_point(, lcar=mesh_ele_size) The idea is to directly create MVC from pygmsh data. Creating MVC directly from arrays would allow bypassing saving of the mesh file onto the hard disk. P1 = geom.add_point(, lcar=mesh_ele_size) Goals for the second phase of the programming were two-fold: Develope code to test the integration of gmsh API with new mesh workflow. P0 = geom.add_point(, lcar=mesh_ele_size) Python Pygmsh from pygmsh.built_in.geometry import Geometry #include ĭolfin::io::XDMFFile xdmf_file(MPI_COMM_WORLD, "./input/mesh_2d.xdmf") Īuto mesh_2d = std::make_shared(xdmf_file.read_mesh(mesh::GhostMode::none)) Īuto mvc = dolfin::mesh::MeshValueCollection(mesh_2d, 1, Here is a snippet to create MVC from pygmsh data. The functionality was achieved with and the following PR was made. Develope code to test the integration of gmsh API with new mesh workflow.Ĭreating MVC directly from arrays would allow bypassing saving of the mesh file onto the hard disk.Function spaces definition In this example, the trial and test functions are vector valued, thus we work with a cartesian product of the space \(V\) ( \(V\times V\) in 2D and \(V\times V\times V\) in 3D). Create a method to construct MVC from arrays See this short tutorial on generating meshes with Gmsh and importing it into FEniCS, or the full documentation if necessary.Goals for the second phase of the programming were two-fold:
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |