Enhanced Mualem-Van Genuchten Approach for Estimating Relative Soil Hydraulic Conductivity

Abstract:

New theoretical justification for the function of soil differential moisture capacity (dependence of the relative water volume content on the capillary pressure) and its antiderivative is presented. New method is based on the concept of capillarity and the lognormal distribution of the effective radii of pores. Relative hydraulic conductivity of soil is calculated with usage of these functions and Mualem's approach. Hydrophysical parameters have been interpreted and evaluated on the base of some physical and statistical soil characteristics. Also the approximation for functions of water-retention capacity and relative hydraulic conductivity of soil has been proposed.

• Periodical: Applied Mechanics and Materials (Volumes 725-726)
• Pages: 355-360
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.725-726.355
• Online since: January 2015
• Authors: Vitaly Terleev, Vladimir Badenko*, Inna Guseva, Wilfried Mirschel
• Keywords: Capillary Pressure, Differential Soil Water Capacity, Effective Pore Radius, Hydraulic Conductivity, Lognormal Distribution, Mualem-Van Genuchten Method, Soil Water-Retention Capacity

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