Application and improvement of a recent approximate analytical solution of Richards' equation

被引：20

作者：

Hogarth, WL

Parlange, JY

机构：

[1] Griffith Univ, Australian Sch Environm Studies, Nathan, Qld 4111, Australia

[2] Cornell Univ, Dept Agr & Biol Engn, Ithaca, NY 14853 USA

来源：

WATER RESOURCES RESEARCH | 2000年 / 36卷 / 07期

关键词：

D O I：

10.1029/2000WR900042

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A method for developing wetting front profiles for the one-dimensional Richards' equation is given. The method is obtained by simplifying and extending a recent approximate solution and brings together features from several different studies. Difficulties associated with profile development are discussed by applying the method to several examples, providing a deeper understanding of the solutions of Richards' equation. For simplicity, we illustrate the improvements for soil-water diffusivities and conductivities which have a power law dependence on the water content although they should apply in general, and the appropriate generalization is given in the conclusion.

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页码：1965 / 1968

页数：4

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