Re: [firedrake] Restricting a test function space

On 22/02/16 10:56, William Booker wrote:

Sorry about the late reply.

The issue that we require both u.n = 0 and \phi.n =0 , as there are fluxes on both the velocity and the test functions. Both boundary conditions are required to preserve the skew-symmetry of the Poisson bracket.

I am currently implementing the velocity boundary in a strong sense, how would I go about implementing it weakly?

So when you integrated by parts you must have obtained some surface integrals. You use the restrictions on respectively u.n and \phi.n to remove the appropriate terms from those surface integrals I would think. Cheers, Lawrence