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Transition in the Flow of Power-Law Fluids through Isotropic Porous Media

Zami-Pierre, Frédéric and Loubens, Romain de and Quintard, Michel and Davit, Yohan Transition in the Flow of Power-Law Fluids through Isotropic Porous Media. (2016) Physical Review Letters, 117. 074502/1-074502/5. ISSN 0031-9007

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Official URL: http://dx.doi.org/10.1103/PhysRevLett.117.074502

Abstract

We use computational fluid dynamics to explore the creeping flow of power-law fluids through isotropic porous media. We find that the flow pattern is primarily controlled by the geometry of the porous structure rather than by the nonlinear effects in the rheology of the fluid. We further highlight a macroscale transition between a Newtonian and a non-Newtonian regime, which is the signature of a coupling between the viscosity of the fluid and the structure of the porous medium. These complex features of the flow can be condensed into an effective length scale, which defines both the non-Newtonian transition and the Newtonian permeability.

Item Type:Article
Additional Information:Thanks to American Physical Society. The definitive version is available at: http://journals.aps.org/ The original PDF of the article can be found at: http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.117.074502
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Other partners > Total (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
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Total
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Deposited By: Frédéric Zami-Pierre
Deposited On:23 Aug 2016 12:41

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