On Apr 17, 2013, at 11:28 PM, "Manav Bhatia" <[email protected]> wrote:
>> It's usually preferable to order your unknowns so that the fields are >> interlaced, with all values at a node contiguous. > > I will certainly give these a shot tomorrow. Do you know if these require any > other modification in my code/libMesh, or providing the command line options > would be enough? Jed's commas line option should work for older versions of libMesh, but if you are using 0.9.0 or newer the interlaced variables should be automatic if the DofMap properly discovers one "VariableGroup" What types of CFL numbers are you running at? My experience with compressible navier stokes (without mulrigrid) is that convergence is usually very good provided the numerical time step is less than the characteristic time of the flow (l_ref/U_ref). Going much higher than that for supersonic flows can give fits unless the boundary conditions are linearized perfectly. Given that the subsonic bcs are more complex I thought I'd mention this. -Ben ------------------------------------------------------------------------------ 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
