On Tue, Mar 23, 2010 at 2:51 PM, Roy Stogner <[email protected]> wrote: > > On Tue, 23 Mar 2010, John Peterson wrote: > >> On Tue, Mar 23, 2010 at 2:41 PM, Roy Stogner <[email protected]> >> wrote: >> >>> You're right that it's a lower-order element; I don't recall what the >>> advantage over P1/P0 is supposed to be. >> >> P1/P0 is not LBB-stable. Gresho & Sani also say "sometimes locks" and >> "rarely, if ever, usable." Ouch. > > Gah! I must be slipping. I could have sworn there was an LBB-stable > way of using discontinuous constants for pressure without adding any > stabilization term. Q1/P0??
Aka Q1Q0. Not LBB stable, but "simple" and "penalty method works". "Mathematicians hate it", "first-order usually". -- John ------------------------------------------------------------------------------ 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
