An alternative continuous form of Arya and Paris model to predict the soil water retention curve of a soil

被引：7

作者：

Campos-Guereta, Ivan ^{[1
]}

Dawson, Andrew ^{[1
]}

Thom, Nicholas ^{[1
]}

机构：

[1] Univ Nottingham, Fac Engn, Nottingham Transportat Engn Ctr, Nottingham NG7 2RD, England

来源：

ADVANCES IN WATER RESOURCES | 2021年 / 154卷

关键词：

Water retention curve; Soil water characteristic curve; Pore size distribution; Arya and Paris; ACAP; PARTICLE-SIZE DISTRIBUTION; BULK-DENSITY DATA; PEDOTRANSFER FUNCTIONS; PORE-SIZE; HYDRAULIC-PROPERTIES; PHYSICOEMPIRICAL MODEL; PERMEABILITY; CONDUCTIVITY; SPLINTEX; EQUATION;

D O I：

10.1016/j.advwatres.2021.103968

中图分类号：

TV21 [水资源调查与水利规划];

学科分类号：

081501 ;

摘要：

Arya and Paris developed a model in 1981 to predict the water retention curve of a soil from the grain size distribution and the porosity. This model was very convenient due to the simplicity of the input parameters, and because experimental measures are expensive and with no lack of uncertainties. The model was based on very simple equations but the need to discretize the grain size distribution restricted its usability. A new model is presented, preserving the physical meaning but solving this dependency and other issues and allowing a continuous expression that was not possible with the original model. The new model is very convenient and practical as expressions are easy to implement, and its predictions depend on only one parameter for which some recommended values are also included. Limitations and uncertainties of the model are also discussed.

引用

页数：15

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