Upscaling of anisotropy in unsaturated Miller-similar porous media

Ursino, Nadia; Roth, Kurt; Gimmi, Thomas; Flühler, Hannes (2000). Upscaling of anisotropy in unsaturated Miller-similar porous media. Water resources research, 36(2), pp. 421-430. American Geophysical Union 10.1029/1999WR900320

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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.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Institute of Geological Sciences

UniBE Contributor:

Gimmi, Thomas

Subjects:

500 Science > 550 Earth sciences & geology

ISSN:

0043-1397

Publisher:

American Geophysical Union

Language:

English

Submitter:

Thomas Gimmi

Date Deposited:

18 Sep 2014 16:32

Last Modified:

24 Dec 2014 00:10

Publisher DOI:

10.1029/1999WR900320

BORIS DOI:

10.7892/boris.47690

URI:

https://boris.unibe.ch/id/eprint/47690

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