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Evaluation of the Intrinsic‐Penetrability and ‐Diffusivity Concepts To Predict Horizontal Infiltration in Porous Media
Author(s) -
Mustafa M. A.,
Letey J.,
Watson C. L.
Publication year - 1970
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/sssaj1970.03615995003400030010x
Subject(s) - thermal diffusivity , infiltration (hvac) , loam , surface tension , porosity , porous medium , materials science , chemistry , soil water , thermodynamics , soil science , composite material , geology , physics
The equations λ = λ i [(γ/η) cos H ] ½ and D = D i [(γ/η) cos H ] have been presented to describe the effect of surface tension, γ, viscosity, η, and solid‐liquid contact angle, H , on penetrability, λ, and diffusivity D , where λ i and D i are the intrinsic penetrability and diffusivity, respectively. The equations were tested by studying horizontal liquid‐infiltration at 2 mbars suction of nine organic liquids and 0.01 N CaSO 4 in glass beads, Pachappa clay loam, and a water‐repellent soil. The equations were found to describe infiltration quite well for all liquids studied in glass beads and Pachappa soil. The equations apply to organic liquids but not to 0.01 N CaSO 4 in a water‐repellent soil.