If you do not need curved elements set Mesh.SecondOrderLinear = 1
-- jeremy theler www.seamplex.com On Fri, Sep 4, 2020, 11:22 Stephen Wornom <stephen.wor...@inria.fr> wrote: > Tell the list if it removes the negative values. > Thanks, > Stephen > > ----- Original Message ----- > > From: "Christophe Geuzaine" <cgeuza...@uliege.be> > > To: "Nikhil Vaidya" <nikhilvaidy...@gmail.com> > > Cc: gmsh@onelab.info > > 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 <nikhilvaidy...@gmail.com> > 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? > > > > Try the high-order mesh optimizer: "-optimize_ho" on the command line. > > > > Christophe > > > >> > >> Best regards, > >> Nikhil > >> _______________________________________________ > >> 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 > > _______________________________________________ > gmsh mailing list > gmsh@onelab.info > http://onelab.info/mailman/listinfo/gmsh >
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