Title of article :
Physics of water repellent soils
Author/Authors :
T.W.J Bauters، نويسنده , , T.S Steenhuis، نويسنده , , D.A DiCarlo، نويسنده , , J.L Nieber، نويسنده , , L.W. Dekker، نويسنده , , C.J. Ritsema، نويسنده , , J.-Y Parlange، نويسنده , , R Haverkamp، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2000
Pages :
11
From page :
233
To page :
243
Abstract :
Although it is generally well known that water repellent soils have distinct preferential flow patterns, the physics of this phenomenon is not well understood. In this paper, we show that water repellency affects the soil water contact angle and this, in turn, has a distinct effect on the constitutive relationships during imbibing. Using these constitutive relationships, unstable flow theory developed for coarse grained soils can be used to predict the shape and water content distribution for water repellent soils. A practical result of this paper is that with a basic experimental setup, we can characterize the imbibing front behavior by measuring the water entry pressure and the imbibing soil characteristic curve from the same heat treated soil.
Keywords :
Infiltration , Preferential flow , Surfactant , Constitutive relationships , Contact angle , Fingered flow
Journal title :
Journal of Hydrology
Serial Year :
2000
Journal title :
Journal of Hydrology
Record number :
1096281
Link To Document :
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