Symmetry solutions for transient solute transport in unsaturated soils with realistic water profile

被引：8
|
作者：
Moitsheki, RJ
Broadbridge, P
Edwards, MP
机构：
[1] Univ Delaware, Dept Math Sci, Newark, DE 19716 USA
[2] Univ Wollongong, Inst Math Modelling & Computat Syst, Wollongong, NSW 2522, Australia
来源：
TRANSPORT IN POROUS MEDIA | 2005年 / 61卷 / 01期
关键词：
solute transport; unsaturated soil; analytical solutions; Lie point symmetries;
D O I：
10.1007/s11242-004-6799-8
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
We examine solutions for solute transport using the convection-dispersion equation (CDE) during steady evaporation from a water table. It is common, when solving the CDE, to first approximate the volumetric water content of the soil as a constant. Here, we assume a reasonable function for the water content profile and construct realistic nonlinear hydraulic transport properties. Both classical and nonclassical symmetry techniques are employed. Invariant solutions are obtained for the one dimensional CDE even with a nontrivial background profile for volumetric water content.
引用
收藏
页码：109 / 125
页数：17
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