Unsteady state two-dimensional water content distribution and wetting fronts in soils

The unsteady state two-dimensional water flow equation for unsaturated soils was solved numerically with the aid of an alternating-direction implicit method. Water content distributions, wetting fronts, and water flux were predicted for an Ida silt loam soil with an impermeable barrier and a Webster clay loam soil with a groundwater table. It is concluded that the numerical method is stable and convergent for solving unsteady state two dimensional infiltration problems.