On Mon, 25 May 2020, Li Luo wrote:
For a multicomponent system, such as Navier-Stokes equations, I found that the ordering of unknowns in the system depends on the order of polynomials used for the variables. Take a two-component system with variables u and p for example: -If using first order for both variables, the ordering is point by point, that is u_1, p_1, u_2, p_2, ...., u_n, p_n. -If using second order for u and first order for p, the ordering is field by field, i.e., all the unknowns of u are ordered first then followed by all the unknowns of p. For the second case, is there any way to change to a point by point ordering? Though in such case there is no unknown of p on the mid-edge point.
Try setting --node-major-dofs on the command line. It should give you a point by point ordering, though as you say there's no way in that case for the number of variables to be *identical* on each point. --- Roy _______________________________________________ Libmesh-users mailing list Libmesh-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/libmesh-users
