A numerical analysis of the infiltration and parameter effects in unsaturated soil

Rainfall infiltration is a complex problem involving unsaturated-saturated seepage and pore-water pressure change.The van Genuchten model is one of the most popular models describing a soil-water characteristic curve(SWCC).Numerical solution is used to investigate the influence of the soil-water characteristic curve on rainfall infiltration in unsaturated soil.In a one-dimensional Richards equation,SWCC and hydraulic conductivity expressions with van Genuchten are considered.The equation is solv...