huyanzhou, in the documentation , it's said in the case of mesh with moved vertices is > refined a few step later, should do as follows: > 1. save the offset applied to every vertex, > 2. call communicate_locally_moved_vertices function > 3. apply the opposite offset > 4. call communicate_local refining or coarsening the meshly_moved_vertices > function > 5. refining or coarsening the mesh > > i don't quite understand the 5 step. > 1. what's the meaning of offset here? is it the move vector for every > vectices in this step, or the whole move vector which will make the mesh > return to original mesh? >
The offset is the total move vector that will make the mesh return to its original state. Only the mesh without any displacements has valid positions for all the cells (including artificial ones). 2. we add the opposite offset , does this means we need apply the offset > again after refining or coarsening ? > Yes. The offset vector should be transferred to the new mesh via SolutionTransfer. Then you can apply it again. An alternative to moving the vertices is using MappingFEField or MappingQEulerian. 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 dealii+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/dealii/CAOYDWbKVHdywuJOfhCKjHP3Tib8%3DX-tdgvCxt-75Q5UX0psXsQ%40mail.gmail.com.
