DIFFUSION.PDE
This problem considers the thermally driven diffusion of a dopant into a solid from a constant source. Parameters have been chosen to be those typically encountered in semiconductor diffusion.
FOREVER.PDE
This problem displays the behaviour of FlexPDE in time dependent problems. We posit a field with paraboloidal shape and with amplitude sinusoidal in time. We then derive the source function necessary to achieve this solution, and follow the integration for ten cycles, comparing the solution to the known analytic solution.