Beautiful Patterns in Nature: Lengyel-Epstein model (CIMA)
F. Hecht, S.M. Kaber

Beautiful Patterns in Nature: Lengyel-Epstein model (CIMA) F. Hecht, S.M. Kaber The Lengyel-Epstein model (two nonlinear parabolic equations) is a model for a competition between an activator and an inhibitor. It is widely used to investigate Turing patterns. See the course Growth, reaction, movement and diffusion from biology by B. Perthame The computation have been done using the Finite Element Solver Freefem. The movies represent the evolution of the concentration of the activator (iodide) for two different sets of initial/coefficients parameters.