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Title: Kinetic roughening in two-phase fluid flow through a random Hele-Shaw cell
Author: Pauné i Xuriguera, Eduard
Casademunt i Viader, Jaume
Keywords: Dinàmica de fluids
Física estadística
Fluid dynamics
Statistical physics
Issue Date: 2003
Publisher: American Physical Society
Abstract: A nonlocal interface equation is derived for two-phase fluid flow, with arbitrary wettability and viscosity contrast, c = ( μ 1 − μ 2 ) / ( μ 1 + μ 2 ) , in a model porous medium defined as a Hele-Shaw cell with random gap b 0 + δ b . Fluctuations of both capillary and viscous pressure are explicitly related to the microscopic quenched disorder, yielding conserved, nonconserved, and power-law correlated noise terms. Two length scales are identified that control the possible scaling regimes and which scale with capillary number Ca as ℓ 1 ∼ b 0 ( c C a ) − 1 / 2 and ℓ 2 ∼ b 0 C a − 1 . Exponents for forced fluid invasion are obtained from numerical simulation and compared with recent experiments.
Note: Reproducció digital del document proporcionada per PROLA i
It is part of: Physical Review Letters, 2003, vol. 90, núm. 14, p. 144504-1-144504-4
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ISSN: 0031-9007
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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