On Thu, 14 Aug 2014, walter kou wrote: > I am currently using scalar-valued FE in libmesh (like the example in 3D > Linear Elastic Cantilever). It seems libmesh-0.9.3 gives more features on > FEMsystem: vector-valued FE.
You can use vector-valued elements without FEMSystem and vice-versa. > 1) What is the advantage of the way based on FEMSystem over the way based > on scalar-valued FE? especially about the performance for the large-scale > systems. I doubt there's currently any performance advantage to using vector-valued elements. We might be able to optimize their assembly slightly in the future. The big advantage of using vector-valued elements is that you can then choose vector-valued approximation spaces (right now just Nedelec, although we'll probably add more later) which aren't tensor products of scalar-valued approximation spaces. This can be important depending on your PDE and formulation. --- Roy ------------------------------------------------------------------------------ _______________________________________________ Libmesh-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/libmesh-users
