thanks for your reply！ i got the problem solved. my fault is the misuse of communicate_locally_moved_vertices function. i got the "shallow hole" because i move the mesh when the mesh is deformed , the mpi processor does't know the right place of ghost layer cell. i solve the problem by correct the whole move vector and return to the original mesh , which i refine and coarsen in the later step. after i finished the refinement , just add the whole move vector again the there is no "shallow hole" any more.
在 2019年10月5日星期六 UTC+8下午11:34:18，Daniel Arndt写道： > > huyanzhou, > > I try to use the communicate_locally_moved_vertices, it fixes the >> departure of mesh belongs to different mesh . but there still remains some >> problem >> > [...] >> you can see that the mesh is consistent on the boundry, but not smooth in >> the inner mesh ,there are some shallow hole on the surface >> > Can you explain more precisely what doesn't work as expected? Is this a > problem you only see when running with multiple MPI processes? > What is the "inner mesh" for you? Do you refer to faces with children? Can > you point out which vertices you think are set wrongly? > > >> my code is as follows >> > [...] >> > > It seems that your idea is to first move vertices according to some > displacement function and then to "correct" hanging vertices to be placed > inside the neighboring face. > That looks OK for standard orientation but might be problematic otherwise. > You should be able to achieve the same effect when you only apply hanging > node constraints to your > displacement vector. > > Best, > Daniel > > -- The deal.II project is located at http://www.dealii.org/ For mailing list/forum options, see https://groups.google.com/d/forum/dealii?hl=en --- You received this message because you are subscribed to the Google Groups "deal.II User Group" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/dealii/a300b5ff-fadf-4096-ae87-53d88a29536c%40googlegroups.com.
