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An Alert Regarding a Common Misinterpretation of the Van Genuchten α Parameter [PDF]

Revista Brasileira de Ciência do Solo, 2018
Among the equations available to describe the relation between matric potential and soil water content, the soil water retention function, the most commonly used is the equation proposed by Van Genuchten in his 1980 landmark paper.
Quirijn de Jong van Lier, Everton Alves Rodrigues Pinheiro   +1 more
doaj   +3 more sources

Homogenization of Richardsʼ equation of van Genuchten–Mualem model

Journal of Mathematical Analysis and Applications, 2014
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Haitao Cao, Xingye Yue
exaly   +3 more sources

Modeling of transpiration reduction in van Genuchten–Mualem type soils

Water Resources Research, 2009
We derive an analytic expression for the matric flux potential (M) for van Genuchten–Mualem (VGM) type soils which can also be written in terms of a converging infinite series. Considering the first four terms of this series, the accuracy of the approximation was verified by comparing it to values of M estimated by numerical finite difference ...
Quirijn De Jong van Lier, Klaas Metselaar   +1 more
exaly   +2 more sources

Correspondence of the Gardner and van Genuchten–Mualem relative permeability function parameters [PDF]

Water Resources Research, 2007
The Gardner and van Genuchten–Mualem models of relative permeability are widely used in analytical and numerical solutions to flow problems, respectively. Comparison of analytical and numerical solutions therefore requires defining some correspondence between the Gardner and van Genuchten–Mualem models.
Teamrat A Ghezzehei, Timothy Kneafsey
exaly   +4 more sources

Modelos para determinação dos parâmetros da equação de van Genuchten para um Cambissolo Models for determination of parameters of van Genuchten equation for a Cambisol

Revista Brasileira de Engenharia Agrícola e Ambiental, 2005
Com este trabalho, objetiva-se a geração de modelos matemáticos para predição dos 4 parâmetros da equação de van Genuchten (tetaR, tetaS, alfa e n) e para a umidade correspondente à capacidade de campo em função dos atributos areia, argila, matéria ...
Carlos R. de Mello, Geraldo C. de Oliveira, Daniel F. Ferreira, José M. de Lima, Diego Lopes   +4 more
doaj   +2 more sources

A generalized van Genuchten model for unsaturated soil hydraulic conductivity

Vadose Zone Journal
The hydrodynamics of variably saturated soils or porous media in general are described via nonlinear functions of water retention and hydraulic conductivity, which facilitate the simulation of various mass and energy transport processes (e.g., water ...
Asghar Ghorbani, Morteza Sadeghi, Markus Tuller, Wolfgang Durner, Scott B. Jones   +4 more
doaj   +2 more sources

Wolf prize awarded to Rien van Genuchten

Vadose Zone Journal, 2023
Venkataraman Lakshmi, Markus Flury
doaj   +2 more sources

Temperature influence on matric suction in unsaturated soils: experimental insights [PDF]

Scientific Reports
Temperature is a critical factor affecting the matric suction of unsaturated soils. This study employed a simple and time-saving method to investigate the influences of temperature and moisture content on the temperature dependence of matric suction in ...
Feifei Liu, Cheng Xu, Mingming Ba, Xuesong Mao   +3 more
doaj   +2 more sources

Rien van Genuchten: A short autobiography

Vadose Zone Journal
Martinus Th. vanGenuchten
doaj   +2 more sources

Soil Water Characteristic Curves Accounting for Soil Swelling and Shrinking

Guan'gai paishui xuebao, 2023
【Objective】 Heavy-textured soils tend to swell or shrink following rewetting or drying, while most soil water characteristic curves measured from such soils do not consider such effects.
LI Min, LI Wen, CHEN Yitong, SI Bingcheng   +3 more
doaj   +1 more source