Effects of soil-water characteristic curve and relative permeability equations on estimation of unsaturated permeability function

摘要

Unsaturated permeability function can be estimated by theoretical models from soil water characteristic curve (SWCC). To date, there are numerous estimation models that can be used to obtain the unsaturated permeability function from SWCC. However, each model results in a different estimation curve. The reason for this difference is not well understood.