Results 171 to 180 of about 3,626 (208)
A modification to the van Genuchten model for improved prediction of relative hydraulic conductivity of unsaturated soils [PDF]
European Journal of Soil Science, 2021 Modelling of flow and transport in unsaturated soils requires information on two fundamental hydraulic properties: the soil water retention curve and relative hydraulic conductivity.
Xingxing Kuang +2 more
exaly +2 more sources
Approaches for estimating unsaturated soil hydraulic conductivities at various bulk densities with the extended Mualem-van Genuchten model [PDF]
Journal of Hydrology, 2019 The Mualem-van Genuchten model has been widely used for estimating unsaturated soil hydraulic conductivity (Ku) from measured saturated hydraulic conductivity (Ks) and fitted water retention curve (WRC) parameters.
Zhengchao Tian +2 more
exaly +2 more sources
Comparison of CO2 trapping in highly heterogeneous reservoirs with Brooks-Corey and van Genuchten type capillary pressure curves [PDF]
Advances in Water Resources, 2016 Geological heterogeneities affect the dynamics of carbon dioxide (CO2) plumes in subsurface environments in important ways. Previously, we showed how the dynamics of CO2 plumes are influenced by the multiscaled sedimentary architecture in deep brine ...
Naum Gershenzon +2 more
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On the Correspondence between Brooks‐Corey and van Genuchten Models
Journal of Irrigation and Drainage Engineering, 1989A procedure is described for converting van Genuchten (VG) saturation (\IS\N) - capillary pressure (\IP\N) - permeability (\Ik\N) model parameters to equivalent Brooks-Corey (BC) parameters or vice-versa. Differential fluid saturation capacities of the VG and BC \IS-P\N relations are equated at an effective wetting fluid saturation of 0.5 to relate the
R. J. Lenhard, J. C. Parker, S. Mishra
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Proceedings of the XIII Internarional Conference on Ground Penetrating Radar, 2010
We are interested in Ground Penetrating Radar (GPR) as a geophysical tool useful for determining the depth of the ground water table (GWT) and for monitoring shallow water infiltration in sandy soils. At hydrostatic equilibrium, the water content distribution in an homogeneous ground from the vadose zone down to the water saturated zone depends on the ...
Saintenoy Albane, Jan W Hopmans
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We are interested in Ground Penetrating Radar (GPR) as a geophysical tool useful for determining the depth of the ground water table (GWT) and for monitoring shallow water infiltration in sandy soils. At hydrostatic equilibrium, the water content distribution in an homogeneous ground from the vadose zone down to the water saturated zone depends on the ...
Saintenoy Albane, Jan W Hopmans
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On the Improvement of Hydraulic Conductivity Function in Van Genuchten-Mualem Model
Applied Mechanics and Materials, 2014Hydraulic conductivity (HC) is deduced indirectly from soil water retention curves (SWRC) by Mualem model, but the mathematical calculation in the Mualem model is sensitive to integration interval near saturation. After the van Genuchten model fit actual SWRC, the van Genuchten-Mualem (VGM) HC is integrated simply by an analytical function for ...
Yeong Mog Park +3 more
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Waste Management, 2015
Numerical models of landfill processes need to be able to estimate the capillary pressure and relative permeability of waste as a function of moisture content using analytical equations such as the van Genuchten equations. The paper identifies the range of van Genuchten parameter values for use in models and proposes a formulaic relationship between ...
Jim, White +3 more
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Numerical models of landfill processes need to be able to estimate the capillary pressure and relative permeability of waste as a function of moisture content using analytical equations such as the van Genuchten equations. The paper identifies the range of van Genuchten parameter values for use in models and proposes a formulaic relationship between ...
Jim, White +3 more
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Upscaled Soil-Water Retention Using van Genuchten's Function
Journal of Hydrologic Engineering, 1996Soils are often layered at scales smaller than the block size used in numerical and conceptual models of variably saturated flow.
Timothy R. Green +2 more
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Applied Clay Science, 2009
Abstract The main objective of this work is to highlight the influence of variables like temperature and porosity (dry density) on the water retention curve of expansive clays for the analysis of thermo-hydro-mechanical coupled processes (THM problem).
Abel Carlos Jacinto +3 more
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Abstract The main objective of this work is to highlight the influence of variables like temperature and porosity (dry density) on the water retention curve of expansive clays for the analysis of thermo-hydro-mechanical coupled processes (THM problem).
Abel Carlos Jacinto +3 more
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Correspondence between the Campbell and van Genuchten Soil-Water-Retention Models
Journal of Irrigation and Drainage Engineering, 2010Two methods are presented that allow converting the van Genuchten (VG) soil-water-retention (SWR) model parameters to equivalent parameters of the Campbell (C) model. The first method builds on an available solution to convert the VG model to an equivalent Brooks-Corey (BC) model, but accounts for the fact that the effective water content of the BC ...
Rolf Sommer, Claudio Stöckle
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