title: Fokker-Planck: convection in two directions
body: <p>I'm trying to simulate a Fokker-Planck process with the particles moving in direction A for fraction x of the time and direction B for (1-x). How do I set up the equation? Or is it possible for me to solve two Fokker-Planck equations, one for each advection component, and then sum the products of each with their corresponding fraction?</p>