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Steady-state two-phase flow in porous media: statistics and transport properties.

By K. (Ken Tore) T. (Tore) Tallakstad, Henning A.A. (Arendt) Knudsen, T. (Thomas) Ramstad, G. (Grunde) Løvoll, K. (Knut Jørgen) J. (Jørgen) Måløy, R. (Renaud) Toussaint and Eirik G.G. (Grude) Flekkøy

Abstract

We study experimentally the case of steady-state simultaneous two-phase flow in a quasi-two-dimensional porous media. The dynamics is dominated by the interplay between a viscous pressure field from the wetting fluid and bubble transport of a less viscous, nonwetting phase. In contrast with more studied displacement front systems, steady-state flow is in equilibrium, statistically speaking. The corresponding theoretical simplicity allows us to explain a data collapse in the cluster size distribution as well as the relation |nablaP| proportional, sqrt[Ca] between the pressure gradient in the system and the capillary number

Topics: Physique [physics]/Mécanique [physics], Planète et Univers [physics]/Sciences de la Terre, Sciences de l'ingénieur [physics]/Milieux fluides et réactifs
Publisher: 'American Physical Society (APS)'
Year: 2009
DOI identifier: 10.1103/PhysRevLett.102.074502
OAI identifier: oai:univoak.eu:islandora_71503
Provided by: univOAK

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