On Tue, 23 Mar 2010, John Peterson wrote: > Roy: Is my memory correct in that this is the same "perfectly > unnested" element (with respect to h-refinement) we looked at for > shallow water equations a while back?
You're thinking of the P1-NC "P1 Non-Conforming" element, right? No, that one was simpler in some ways (only 1 dof per edge, instead of 1 per edge and 1 per vertex, and it was linear on the whole element with no subelements) and horribly more complex (did we *ever* figure out the right way to do hanging node refinement with it?) in others. This one's a plain C0 element, 6 nodes on triangles, Lagrange basis; the distinction from our LAGRANGE quadratic is that the function space is linear on each of the 4 subelements rather than a quadratic on the whole element. You're right that it's a lower-order element; I don't recall what the advantage over P1/P0 is supposed to be. --- Roy ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev _______________________________________________ Libmesh-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/libmesh-users
