> On 12 Feb 2018, at 15:42, Juan E. Sanchez <juan.e.sanc...@gmail.com> wrote: > > Hello, > > Unfortunately, I do not have the geometrical description. Is there a way to > convert the mesh to a geometrical description? >
No ; we are working on a new implementation of our “reparametrization” algorithm, which will allow you to do some of this, but it’s not ready yet... > Regards, > > Juan > > On 2/12/18 1:21 AM, Christophe Geuzaine wrote: >>> On 10 Feb 2018, at 22:06, Juan E. Sanchez <juan.e.sanc...@gmail.com >>> <mailto:juan.e.sanc...@gmail.com>> wrote: >>> >>> Hello, >>> >>> I have an existing msh file, and a pos file containing a background mesh. >>> Is there a script example showing how to use these files to create a >>> refined mesh using the background field? >>> >> Start from the geometrical description (not the mesh): this way Gmsh will be >> able to place the new vertices correctly, i.e. on the CAD >> gmsh -3 test.geo -bgm test.pos >> CG >>> Using >>> >>> gmsh -3 test.msh -bgm test.pos >>> >>> results in a mesh where there is the same number of nodes and elements, but >>> it appears that the physical entity number is lost: >>> >>> last element in original file: >>> >>> 36210 4 3 15 15 0 5786 5791 5792 5800 >>> >>> last element in new file: >>> >>> 36210 4 2 0 15 2603 5822 2604 2605 >>> >>> Now all of the mesh elements belong to the same physical entity, 0. >>> >>> If I perform a "refine by splitting" in the gui, the physical entity >>> information is maintained: >>> >>> 266256 4 2 15 15 42825 10009 41452 9710 >>> >>> The file is a 3d tetrahedral mesh, and it also contains triangular surfaces >>> to impose boundary conditions. >>> >>> Regards, >>> >>> Juan >>> >>> >>> _______________________________________________ >>> gmsh mailing list >>> gmsh@onelab.info <mailto: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 >> Free software: http://gmsh.info | http://getdp.info | http://onelab.info > > > _______________________________________________ > 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 Free software: http://gmsh.info | http://getdp.info | http://onelab.info
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