If I create multiple elements that occupy the same (exact) spatial domain, but with distinct nodes (multiple nodes defined at the same spatial point), would there be any negative implication for ReplicatedMesh or ParallelMesh data structures?
This is in relation to the implementation of XFEM where sometimes duplicate entities are defined for multiple levels of enrichment functions. Thanks, Manav > On Jan 27, 2017, at 10:26 AM, Roy Stogner <[email protected]> wrote: > > > On Fri, 27 Jan 2017, Manav Bhatia wrote: > >> The subdomain approach sounds promising. I will look into this and >> the SCALAR variable. > > SCALAR you want to avoid for locally supported variables in fully > implicit solves. We generate dense rows and columns for each SCALAR > dof, which is not what you want for efficiency when you know a priori > that nearly all that coupling isn't really there. > >> Another question: the application in mind is topology optimization >> with XFEM, where voids can form/disappear in a continuum during the >> course of optimization. I don’t want to modify the mesh during this >> procedure. So, if a certain portion of the domain becomes a void, >> what would be the best approach to make the dofs inactive in that >> void? >> >> Can I simply iterate on the node/elem dofs and flag them as >> active/inactive so that I don’t have to worry about >> solving/specifying Dirichlet conditions for them? > > I'd add a user constraint equation for each dof. > --- > Roy ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, SlashDot.org! http://sdm.link/slashdot _______________________________________________ Libmesh-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/libmesh-users
