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- Title
Mechanisms of flow-induced deformation of porous media.
- Authors
HELLSTRÖM, J. G. I.; FRISHFELDS, V.; LUNDSTRÖM, T. S.
- 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.
- Subjects
POROUS materials; DEFORMATIONS (Mechanics); PARTICLE dynamics; FLUID dynamics; STOKES equations; PERMEABILITY; REYNOLDS number
- Publication
Journal of Fluid Mechanics, 2010, Vol 664, Issue 1, p220
- ISSN
0022-1120
- Publication type
Article
- DOI
10.1017/S002211201000368X