2015-05-28 20:09 GMT+10:00 David Love <[email protected]>: > Dear Geordie, > > Thank you very much for your reply. > > You are right, GMSH does not generate zero volume tetrahedra. I think the > issues with the finite element simulations are due to a combination of my > Matlab script and GMSH's volume meshing routine. When loading the volume > mesh into COMSOL a minimum quality factor of 6E-10 (average quality 0.66) is > obtained, which is rather poor.
Dear David, Thanks for updating on your progress and clarifying the difficulty. I see that the latter is poor tetrahedra rather than completely flat ones. Since last writing, I remembered the advice of M. Z. to another query on this list earlier this month: -optimize. http://www.geuz.org/pipermail/gmsh/2015/009750.html I passed this option to Gmsh on the command-line $ gmsh -3 -optimize -format mesh -string "Mesh.SaveElementTagType=2;" -o Plane111_UnitCellCountXYZ331_VolumeFraction13_NetworkNR1.mesh Plane111_UnitCellCountXYZ331_VolumeFraction13_NetworkNR1.geo and checked the resulting .mesh files by opening them in the Gmsh GUI and inspecting the last three fields in the Tools/Statistics panel: SICN, Gamma, and Rho. The minima of these over the mesh seem to have lifted quite a bit which I assume (without going into details) imply a better mesh. Perhaps -optimize or -optimize_netgen would help in your problem too. Best wishes. _______________________________________________ gmsh mailing list [email protected] http://www.geuz.org/mailman/listinfo/gmsh
