Hi to all, I've been around this forum for some time now, but this is the first time I actually registered in need to ask you for some help to crack this. I've seen some great minds who surely could give me some lights. Thanks to all :) 1. The problem statement, all variables and given/known data So, um trying to create a numerical simulation of a reaction-diffusion system (see eq. below) and I already did the numerical treatment and ok. My goal is to build this on 2D and I already did on 1D and it went well. 2. Relevant equations Here is my system of coupled equations: du/dt = laplacian(u) + gamma * f(u,v) dv/dt = d * laplacian(v) + gamma * g(u,v) 3. The attempt at a solution I already build the simulation but it's not working as it should be. I want to know if someone already did try is hand at this and how it went? Maybe you could show me where to find some resources or show me some code/numerical recipes to me so I could make my simulation run properly. Thanks to all, and sorry for my English, I'm not a natural English speaker and never really had English classes.