Hi all, I am very new to the finite element field, and I want to try to solve the a variant of the fokker-plank equation with periodic boundary conditions. To do this, I need to find a way to impose an actual concentration in the system. Since I have a Robin boundary condition (no flux) at the surf…

Maybe the documentation from FEniCS is cleaner? It solves exactly the same problem, so the variational formulations are the same. If you want to switch to 3D, switch mesh to mesh3 and int2d to int3d.

How to use Lagrange Multipliers in FreeFEM

General Discussion

prj July 28, 2020, 7:52pm 6

f is the source term, vb discretizes the constraint int(u) = b1.

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How to use Lagrange Multipliers in FreeFEM

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