> On 26 Jul 2018, at 08:24, Nan Li <linan88433...@gmail.com> wrote: > > Hello everyone, > > I am trying to mesh a cross-cavity with high order tetrahedron element > (tetrahedron 10) and apply periodic boundary condition in x direction and y > direction. As the periodic boundary condition has nothing to do with the > cavity, you can consider the cross-cavity as a cube. > > I have used 'periodic surfaces' and find the mesh of the two opposite surface > is identical. So far so good. Then when I look into the .msh file and try to > extract the point pairs in $Periodic $EndPeriodic, I find that only the nodes > on the vertex of triangle are listed there. The internal nodes for each edge > are not listed. > > Does anyone have successfully extract the periodic pairs of internal nodes of > each edge ? >
Indeed we only keep track of the main vertices in the Periodic section. Once you have those you can get the element correspondance and match the high-order ones. @Koen, Amaury - should we also add the high-order vertices in the correspondance tables ? Christophe > Thanks. > > Nan LI > <cross_cavity.geo>_______________________________________________ > 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 Free software: http://gmsh.info | http://getdp.info | http://onelab.info
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