lorenzo alessio botti <[email protected]> writes: > I almost never tune those parameters. > Interior penalty can be problematic in case of very stretched elements but > BR2 works great in 2D and 3D with stability parameter \eta= 3, 4 or number > of element faces (as the theory suggests).
How do you define the stabilization when the viscosity/diffusivity has a discontinuity across the interface? Make it a healthy jump of ten orders of magnitude. > I think that the major difference is the convergence rates of iterative > solvers, with cG you need far less iterations. That's the reason why I use > cG for the pressure solvers in operator splitting algorithms for > incompressible flows. Okay, but then your discrete velocity field is only divergence-free up to discretization error instead of up to iterative solver tolerance. ------------------------------------------------------------------------------ Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis & visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter _______________________________________________ Libmesh-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/libmesh-users
