Flow

Models for fluid flow in porous media, including unsaturated flow (Richards equation), diffusion (Fick's second law), and two-phase flows.

Model	Description
M1	1D unsaturated flow (Richards equation, FVM)
M2	Two-phase liquid-gas flow
M5	Water-air transfer
M10-1	Heterogeneous 2D flow (variant 1)
M10-2	Heterogeneous 2D flow (variant 2)
Richards 2D	2D unsaturated flow (FEM)