On Wed, May 15, 2013 at 6:36 AM, Manav Bhatia <[email protected]> wrote: >> >> >> One other thought: do you have some O(h) stabilization terms present? >> Then if you aren't refining the grid they don't get smaller... >> > > > There is a GLS stabilization term with the typical tau matrix. I have > experimented with different tau definitions, but get the same behavior. > > Essentially, almost all definitions in 1-D have the form > > (sum_{i=1,n_shape_funcs} | a dNi/dx | ) ^-1 > > where N is the shape function and 'a' is the velocity. The numeric value of > this expression reduces as the polynomial order is increased.
Really? The lowest order hierarchics are the Lagrange basis functions, and dNi/dx ~ 1/h is certainly true for those. -- John ------------------------------------------------------------------------------ AlienVault Unified Security Management (USM) platform delivers complete security visibility with the essential security capabilities. Easily and efficiently configure, manage, and operate all of your security controls from a single console and one unified framework. Download a free trial. http://p.sf.net/sfu/alienvault_d2d _______________________________________________ Libmesh-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/libmesh-users
