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Mechanisms of flow-induced deformation of porous media

Published online by Cambridge University Press:  12 October 2010

J. G. I. HELLSTRÖM ,
V. FRISHFELDS  and
T. S. LUNDSTRÖM
J. G. I. HELLSTRÖM
Affiliation:
Division of Fluid Mechanics, Luleå University of Technology, SE-971 87 Luleå, Sweden
V. FRISHFELDS*
Affiliation:
Division of Fluid Mechanics, Luleå University of Technology, SE-971 87 Luleå, Sweden Faculty of Physics and Mathematics, University of Latvia, Zellu 8, LV-1002 Riga, Latvia
T. S. LUNDSTRÖM
Affiliation:
Division of Fluid Mechanics, Luleå University of Technology, SE-971 87 Luleå, Sweden
*
†Email address for correspondence: [email protected]
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Abstract

The study investigates creeping flow-induced alteration in the permeability of deformable particle systems. Low-Reynolds-number transversal flow through random arrays of aligned cylinders is considered by means of a combined methodology of directly solving the two-dimensional (2D) Stokes equations for the flow in the vicinity of two particles and minimising the dissipation rate in a system comprising thousands of particles. The results demonstrate that the more compact the system, the greater the possible relative change of permeability when a high flow rate is applied. The permeability of large random arrays always increases when increasing the flow rate, which is most apparent in compact systems with equal-sized particles. The permeability can sometimes decrease but only in structured or small systems.

JFM classification

Mathematical Foundations: Computational methods Low-Reynolds-number flows: Stokesian dynamics Mathematical Foundations: Variational methods
Type
Papers
Information
Journal of Fluid Mechanics , Volume 664 , 10 December 2010 , pp. 220 - 237
Copyright
Copyright © Cambridge University Press 2010

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