This code provides a MATLAB implementation of a 2D Poisson solver using the multigrid method. The solver can be used to solve the Poisson equation of the form: ∇^2 u = f where u is the solution, f is ...

Here, $\psi$ is electrode potential, $c_i$ are concentrations of ions. Here is an example in matlab. The function current calculate the currenr density of a reaction ...