On Thu, 19 Aug 2010, Minq Q wrote: > 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.
That's actually correct - the new node is a hanging node on one side of the boundary, and shouldn't exist on the other until the element on the other side is refined. > The strange thing is: The first time of the refinement is OK. But > from the second time the two paired BCs are become different. There are currently two issues with combining the periodic BC and the AMR feature: The "level 1 conformity" constraint is not supported across the boundary. I.e. if you set enforce_level_one to true it will only be enforced on the mesh interior, not from one side of a periodic boundary to another. The mix of AMR and periodic constraint equations may not be working correctly. The two features are supposed to be compatible, but when I wrote the latter I was mostly using one or the other, or at best running periodic problems where the non-uniform refinement occurred away from the periodic BC, so I haven't tested it thoroughly. If you can set up a test case (as simple as possible, please) where the constraints are coming out wrong, please post the code to the list, and we can at least see if it's a simple bug/fix. --- Roy ------------------------------------------------------------------------------ This SF.net email is sponsored by Make an app they can't live without Enter the BlackBerry Developer Challenge http://p.sf.net/sfu/RIM-dev2dev _______________________________________________ Libmesh-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/libmesh-users
