Title:
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Lateral instability in normal viscous fingers
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Author:
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Ledesma Aguilar, Rodrigo Andrés; Quevedo-Reyes, M.; Corvera Poiré, Eugenia; Hernández Machado, Aurora
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Other authors:
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Universitat de Barcelona |
Abstract:
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We study a low-amplitude, long-wavelength lateral instability of the Saffman-Taylor finger by means of a phase-field model. We observe such an instability in two situations in which small dynamic perturbations are overimposed to a constant pressure drop. We first study the case in which the perturbation consists of a single oscillatory mode and then a case in which the perturbation consists of temporal noise. In both cases the instability undergoes a process of selection. |
Subject(s):
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-Dinàmica de fluids -Viscositat -Fluid dynamics -Viscosity |
Rights:
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(c) The American Physical Society, 2005
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Document type:
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Article Article - Published version |
Published by:
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The American Physical Society
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