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Título: | Second-order shallow flow equation for anisotropic aquifers |
Autor: | Castro-Orgaz, Óscar CSIC; Giráldez, Juan Vicente CSIC ORCID ; Mateos, Luciano CSIC ORCID | Palabras clave: | Unconfined flow Shallow flows Second-order theory Groundwater hydraulics |
Fecha de publicación: | 25-sep-2013 | Editor: | Elsevier | Citación: | Journal of Hydrology 501: 183-185 (2013) | Resumen: | 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. © 2013 Elsevier B.V. | URI: | http://hdl.handle.net/10261/91882 | DOI: | 10.1016/j.jhydrol.2013.08.011 | Identificadores: | doi: 10.1016/j.jhydrol.2013.08.011 issn: 0022-1694 |
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