Code for: Solution approaches for evaporation-driven density instabilities in a slab of saturated porous media

This dataset concerns codes and solution approaches for a case of evaporation-driven density instabilities from a porous slab that is bounded vertically. Two solution approaches (Chebyshev-Galerkin and Fundamental matrix) for the resulting eigenvalue problem is included, as well as a code for the direct numerical simulation of the governing system of equations.