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Hydraulic Properties of a Porous Medium: Measurement and Empirical Representation
Author(s) -
Gillham R. W.,
Klute A.,
Heermann D. F.
Publication year - 1976
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1976.03615995004000020008x
Subject(s) - hydraulic conductivity , pressure head , water content , porous medium , attenuation , materials science , porosity , hydraulic head , envelope (radar) , wetting , flow (mathematics) , geotechnical engineering , water flow , mechanics , environmental science , soil science , thermodynamics , composite material , geology , optics , soil water , engineering , physics , telecommunications , radar
The hysteretic water content‐pressure head relationship and the hydraulic conductivity‐water content relationship for a porous material are needed in the solution of the water flow equation to predict behavior of a given flow system. These hydraulic properties were measured in an unsteady‐state manner using gamma ray attenuation for the water content and strain gauge pressure transducer tensiometery for the pressure head. Envelope curves and four to six primary wetting and drying scanning curves of the water content‐pressure relationship were determined. A convenient method of representation of the scanning curves by an empirical function was developed for use in computer solutions of the water flow equation.