I think 5 tets in a cube see attached. mark -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Geordie McBain Sent: 20 May 2011 03:05 To: Michel Dupront Cc: [email protected] Subject: Re: [Gmsh] from hexahedrons to tetrahedrons
> I have a structured mesh with hexahedrons and I would like to split > each hexahedrons into tetrahedrons. > Is it possible ? Hello. Someone asked me this the other day. At first I thought it should be easy, but then I found I didn't know how to do it, in Gmsh or otherwise. I had thought that one should be able to simply split each hexahedron, but then reading the documentation for how it's done in the VTK library: http://www.vtk.org/doc/nightly/html/classvtkDataSetTriangleFilter.html I saw that one must meet `the issue of face compatibility across quadrilateral faces (which way to orient the diagonal?)'. I figure then that it should be possible to export a hexahedral mesh as VTK, use this VTK function to split to tetrahedra and save as VTK, then reread the VTK. I haven't actually gone on to try this. I would be interested to hear of a pure Gmsh solution, if anyone has one. > if yes into how many tetrahedrons ? I think the answer for this should be six, since the volume of a tetrahedron with three mutually perpendicular edges of unit length is 1/6. _______________________________________________ gmsh mailing list [email protected] http://www.geuz.org/mailman/listinfo/gmsh Please be advised that this email may contain confidential information. If you are not the intended recipient, please notify us by email by replying to the sender and delete this message. The sender disclaims that the content of this email constitutes an offer to enter into, or the acceptance of, any agreement; provided that the foregoing does not invalidate the binding effect of any digital or other electronic reproduction of a manual signature that is included in any attachment.
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