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Title: Lateral instability in normal viscous fingers
Author: Ledesma Aguilar, Rodrigo Andrés
Quevedo-Reyes, M.
Corvera Poiré, Eugenia
Hernández Machado, Aurora
Keywords: Dinàmica de fluids
Fluid dynamics
Issue Date: 2005
Publisher: The American Physical Society
Abstract: 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.
Note: Reproducció del document publicat a:
It is part of: Physical Review E, 2005, vol. E71, p. 016312-1-016312-7
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ISSN: 1539-3755
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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