heat_steady, FENICS codes which solve versions of the steady heat equation on a 2D domain.
heat_steady_01 solves the steady heat equation over a rectangle with constant thermal diffusivity.
heat_steady_02 solves the steady heat equation over a square with constant thermal diffusivity, and a point source.
heat_steady_03 solves the steady heat equation over a square with a smoothly-varying thermal diffusivity.
heat_steady_04 solves the steady heat equation over a rectangle with a piecewise constant thermal diffusivity.