A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Intrinsic Sorptivity for Soils with Different Average Grain Size Diameters
In porous media, sorptivity S is a term that quantifies the effect of capillarity on liquid movement in two-phase fluid systems. When describing infiltration into initially dry material, S is dependant upon three factors: the liquid properties, the soil properties, and the maximum liquid content behind the infiltration front, Se. Previous research by Culligan et al. (2005) and Schulte et al. (2007) has explored the use of scaling analyses to derive a dimensionless intrinsic sorptivity S*, and accompanying dimensionless Boltzman transformation Φ* that are consistent for systems with varying liquid properties, and different average degrees of saturation behind the infiltration front, Se (av). The research described in this paper is a continuation of that work. Specifically, it examines whether the concept of S* also holds for systems with varying grain size distributions. Distilled water horizontal infiltration experiments at an average Se (av)=0.8 were compared using two different types of sand. The average grain size diameters varied by approximately a factor of 2. The results of these tests indicate an intrinsic sorptivity value that is consistent with the values obtained in previous work. However, further investigation is needed to refine the relationship for scaling of the microscopic length.
Intrinsic Sorptivity for Soils with Different Average Grain Size Diameters
In porous media, sorptivity S is a term that quantifies the effect of capillarity on liquid movement in two-phase fluid systems. When describing infiltration into initially dry material, S is dependant upon three factors: the liquid properties, the soil properties, and the maximum liquid content behind the infiltration front, Se. Previous research by Culligan et al. (2005) and Schulte et al. (2007) has explored the use of scaling analyses to derive a dimensionless intrinsic sorptivity S*, and accompanying dimensionless Boltzman transformation Φ* that are consistent for systems with varying liquid properties, and different average degrees of saturation behind the infiltration front, Se (av). The research described in this paper is a continuation of that work. Specifically, it examines whether the concept of S* also holds for systems with varying grain size distributions. Distilled water horizontal infiltration experiments at an average Se (av)=0.8 were compared using two different types of sand. The average grain size diameters varied by approximately a factor of 2. The results of these tests indicate an intrinsic sorptivity value that is consistent with the values obtained in previous work. However, further investigation is needed to refine the relationship for scaling of the microscopic length.
Intrinsic Sorptivity for Soils with Different Average Grain Size Diameters
Schulte, Kathryn E. (author) / Heng, Sophia L. (author) / Culligan, Patricia J. (author) / Germaine, John T. (author)
GeoCongress 2008 ; 2008 ; New Orleans, Louisiana, United States
GeoCongress 2008 ; 822-829
2008-03-07
Conference paper
Electronic Resource
English
Intrinsic Sorptivity for Soils with Different Average Grain Size Diameters
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