Upscaling of anisotropy in unsaturated Miller-similar porous media
Publisher DOI
Abstract
Geological and pedological processes rarely form isotropic media as is usually assumed in transport studies. Anisotropy at the Darcy or field scale may be detected directly by measuring flow parameters or may become indirectly evident from movement and shape of solute plumes. Anisotropic behavior of a soil at one scale may, in many cases, be related to the presence of lower-scale directional structures. Miller similitude with different pore-scale geometries of the basic element is used to model macroscopic flow and transport behavior. Analytical expressions for the anisotropic conductivity tensor are derived based on the dynamic law that governs the flow problem at the pore scale. The effects of anisotropy on transport parameters are estimated by numerical modeling.
Date Issued
2000-02
Publication Type
Article
Subject(s)
Language(s)
en
Author(s)
Ursino, Nadia | |
Roth, Kurt | |
Flühler, Hannes |
Additional Credits
Journal
Water resources research
Publisher
American Geophysical Union
ISSN
0043-1397
Access(Rights)
open.access