Second-order shallow flow equation for anisotropic aquifers

被引：3
|
作者：
Castro-Orgaz, O. [1 ]
Giraldez, J. V. [1 ,2 ]
Mateos, L. [1 ]
机构：
[1] CSIC, Inst Agr Sostenible, Cordoba 14080, Spain
[2] Univ Cordoba, Dept Agron, E-14071 Cordoba, Spain
来源：
JOURNAL OF HYDROLOGY | 2013年 / 501卷
关键词：
Groundwater hydraulics; Second-order theory; Shallow flows; Unconfined flow; APPROXIMATION; WAVES;
D O I：
10.1016/j.jhydrol.2013.08.011
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Transient unconfined ground-water flow is described using the well-known Boussinesq equation, in which the Dupuit assumptions are implicit. When these assumptions fail, one must recur to the next level of approximation, which is the second-order theory for shallow flow in porous media, developed by Dagan (1967) for isotropic aquifers. When the soil is highly anisotropic Dagan's second-order theory can become invalid. Here we present the generalized second order theory that account for anisotropy. An analytical solution for the second-order theory with anisotropy is presented for the linearized equation that is used to illustrate this effect on the bank storage problem. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：183 / 185
页数：3
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