The relative entropy distribution by toroidal lattice mixing.

The evolution of the distribution of relative entropies using the mixing model given by "Lattice Models of Advection-Diffusion" by Raymond Pierrehumbert, University of Chicago, November 1999. With initial conditions of a 100 by 100 lattice, with 95% of the PDF in the center four lattice points and 5% elsewhere. With stirring/advection functions round(10*sine(x*pi/100+y)).
Made using Mathematica for use in research in the Washington Experimental Math Lab on Randomly Mixing Fluids.