Hi, im a novice fenics user, and i hope someone can help me with this:
Im trying to solve a reaction-diffusion system, i.e, something like:
dot(u) - div(D*grad(u)) = R(u,r)
dot(r) = F(u)
where R and F are non-lineal functions (in all variables).
The question is simple, there is an example that solve something similar to the presented above?. And if not, and assuming that i've have the variational form of the problem (already discretized implicit in time), how can i apply a non-linear solver (as Newton one or a picard iteration squeme) for the two equations simultaniously?
Thanks!
pd: clearly, english is not my native languaje.
