> 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
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— 
Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science 
http://www.montefiore.ulg.ac.be/~geuzaine




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