On Thu, 19 Mar 2015, Zhang wrote: > Another question is :Does the DirichletBoundary class also uses > nodewise assignment implicitly?
DirichletBoundary calculates constraints by first doing interpolation at nodes, then (in 2D and 3D) projection on edges holding nodal dof coefficients fixed, then (in 3D) projection on faces holding nodal and edge dof coefficients fixed. If you set incompatible constraints on different boundary sides that share the same node or edge (e.g. a lid-driven cavity problem) then which constraint is applied depends on which constraint you added to the system first. The *earliest* added constraint takes precedence. --- Roy ------------------------------------------------------------------------------ Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ _______________________________________________ Libmesh-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/libmesh-users
