I changed my geometry slightly, and the negative jacobians problem has returned. Is there some general second-order meshing workflow (involving smoothing steps) one can follow to avoid this problem?
Best, Nikhil On Sat, Sep 5, 2020 at 7:32 AM Stephen Wornom <[email protected]> wrote: > > Hello > Please let the list know if > > Try the high-order mesh optimizer: "-optimize_ho" on the command line. > fixed the problem, > Stephen > > > > ----- Original Message ----- > > From: "Christophe Geuzaine" <[email protected]> > > To: "Nikhil Vaidya" <[email protected]> > > Cc: "gmsh" <[email protected]> > > Sent: Friday, September 4, 2020 2:19:36 PM > > Subject: Re: [Gmsh] Negative Jacobians in 2nd Order Mesh > > >> On 4 Sep 2020, at 13:49, Nikhil Vaidya <[email protected]> > wrote: > >> > >> Hello, > >> > >> I have a geometry for which 1st order tetrahedral meshing works fine > (with no > >> negative jacobians). For the 2nd order case, I get a few negative > jacobians. > >> This problem does not go away even when I try to regularize the mesh or > reduce > >> mesh sizes in certain regions with small geometric features. > >> > >> Does someone have a suggestion? > > > Hello > > > > Christophe > > > >> > >> Best regards, > >> Nikhil > >> _______________________________________________ > >> gmsh mailing list > >> [email protected] > >> 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 > > [email protected] > > http://onelab.info/mailman/listinfo/gmsh >
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