Hi,
I am having a problem when using the periodic BC together with the mesh
refinement. When one BC is set to refine, the other paired BC is not
allocated the new nodes as it should.
The strange thing is: The first time of the refinement is OK. But from the
second time the two paired BCs are become different.
Do I need to call any things after refinement step.
My current refine function is:
....
mesh_refinement.flag_elements_by_error_fraction (error_per_cell);
if( mesh_refinement.refine_and_coarsen_elements() )
es.reinit ();
....
Thanks in advance,
/ Ming
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