> On 9 May 2020, at 18:09, Hansjoerg Seybold <hansjo...@fisica.ufc.br> wrote: > > Hello, > I am trying to mesh a model consisting of several physical groups each > group at a time and then merge the meshes for the different physical > groups afterwards. The reason why I am trying to perform this "domain > decomposition" is that the meshing of the full model takes over 5 days > and exceeds the runtime limit of the queuing system. > > However I could not find a simple way to apply the "Mesh 2" to a > specific physical group. Gmsh always tries to mesh the whole model. >
You could either delete the parts you don't want to mesh; or hide the parts you don't want to mesh (cf. the `Show` and `Hide` commands in .geo script, or `setVisibility()` in the api) and use the `Mesh.MeshOnlyVisible` option. > My question would be if anybody has a hint how to perform this meshing > in parts and how to combine the resulting meshes into a single final > model. > That's trickier as each mesh will be independent. The development snapshot allows you to set the starting node/element tag (Mesh.FirstNodeTag, Mesh.FirstElementTag), which will help. Removing duplicate nodes when you merge things together can be done with Coherence Mesh (in .geo files) or removeDuplicateNodes() in the api. PS: 5 days to perform a 2D mesh ? Anything special in the geometry/size field? If you don't do this already at least recompile Gmsh with OpenMP enabled, and mesh in parallel? Christophe > Thank you very much. > > Best, > hansjoerg > > _______________________________________________ > gmsh mailing list > gmsh@onelab.info > http://onelab.info/mailman/listinfo/gmsh — Prof. Christophe Geuzaine University of Liege, Electrical Engineering and Computer Science http://www.montefiore.ulg.ac.be/~geuzaine _______________________________________________ gmsh mailing list gmsh@onelab.info http://onelab.info/mailman/listinfo/gmsh
