Sensitivity Analysis and Validation for Numerical Simulation of Water Infiltration into Unsaturated Soil

Figure 2

The rank of sensitivity coefficient. Note: and are saturated and residual volumetric water content; , spatial spacing size; , time-step size; , saturated hydraulic conductivity; (initial cond.), clay medium initial value of volumetric water content; (upper bound), upper boundary of volumetric water content; , , , and are fitting parameters from Haverkamp, as in (10).