[Libmesh-users] How to project a solution from Q1 to Q2 space using libmesh

[Zhang <zy...@nu...>]

Dear all,

As a beginner of libMesh, I am using it to build an incompressible N-S solver with projection method.

When I am trying to calculate as follows,

u^{n+1}=u^{n}-dt*grad(p),


I wonder how to project the pressure gradient grad(p) in Q1 space into the velocity u 's space Q2. Is there
any built-in function for such a task?



Thanks

Zhenyu Zhang