Verification of Infiltration into Dry Soil Using SEEP/W

This document is a technical report that details the verification of infiltration into dry soil using the SEEP/W software. The report outlines the significance of understanding water movement in unsaturated soil, which is crucial in fields such as hydrology and geotechnical engineering. It presents a benchmark comparison of SEEP/W against a semi-analytical solution developed by Warrick et al. (1985) for one-dimensional infiltration. The report describes the application of Richard's equation to analyze water flow in unsaturated zones and discusses the numerical simulation setup, including initial conditions and boundary settings. The results section compares the modeled outcomes from different mesh discretizations, demonstrating that SEEP/W can accurately model infiltration even with coarse discretization. The findings indicate that while a correct solution is achievable, the accuracy of the wetting front can be enhanced through finer mesh and time step refinement. The report concludes with references to the foundational work by Warrick et al.