12 Nov
2015
12 Nov
'15
11:08 a.m.
Basically: d = TrialFunction(D.function_space()) e = TestFunction(D.function_space()) solve(d * e * dx == div(q) * e * dx, D) One might have to think a little about what value this gives at the boundary, but I think it's OK. On Thu, 12 Nov 2015 at 11:00 Justin Chang <jychang48@gmail.com> wrote:
Hi all,
Perhaps this may be a simple question, but say I have this bilinear and linear form:
a = grad(u)*D*grad(v)*dx L = F*v*dx
where u,v is trial/test function on CG1 space, and D and F are coefficients that live in DG0 space.
Say I have a velocity vector function q (CG1) on the same mesh and want D to be the element-wise divergence of said velocity.
How would I formulate D in Firedrake?
Thanks, Justin