> On 14 Oct 2019, at 11:35, Sanghavi, Chaitanya > <chaitanya.sangh...@siemens.com> wrote: > > > > Dear Sir, > > Good morning, > > I would like to generate a 3D mesh for a cube from a predefined 2D surface > mesh on one of the faces of the 3D cube. > > This is very similar to the post below, and I was made aware that this > functionality is included in the latest Gmsh version. > > Link : http://onelab.info/pipermail/gmsh/2006/001866.html > > I tried this methodology, without much success. > > The process I try: > > • Create a Duct.geo file which meshes a unit sized cube 1x1x1 [m] and > produces mesh.msh file. > > <image002.jpg> > > • Create a surface mesh which contains the nodes, elements, physical > surfaces. (duct_interface.msh) > > > • Merge the .msh file into the another geo file, Liner.geo. Importing > this file in the latest version of Gmsh results in some errors, LinerLog. > These errors or bugs are due to lack of default options specification in the > geo file.
The errors are harmless: they are due to the fact that you have a Gmsh option file with deprecated options on your system. You remove the option file with "Help->Restore all options to default settings". > However I see the mesh imported on the surface. > > <image008.jpg> > • Generate a surface mesh with the above file. This produces a surface > mesh without any issues and warnings and also avoids meshing on the > pre-defined discrete surface mesh. > > <image009.jpg> > > > • Meshing in produces errors saying the element facet intersect. > (Refer ErrorBug file) > The mesh you are loading does not contain the full topology: in particular it does not contain the boundary (curve) mesh of the square. When you mesh the geometry you thus indeed generate overlapping meshes, which will prevent 3D meshing. Christophe > > I have one question regarding this: > > • Is there a way to use the nodes defined in the duct_interface.msh to > define the line and surface loops for the second geometry ? > I can see the nodes duplicated in the surface mesh. > > Could this be the reason to not produce the volume mesh in the second cube ? > > > I would like to thank and appreciate your efforts for the help provided. > > > Regards > Chaitanya > > > > > <mesh.msh><duct_interface.msh><Liner.geo><LinerLog><ErrorBug>_______________________________________________ > 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
