Title:
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Relevance of dynamic wetting in viscous fingering patterns
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Author:
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Alvarez Lacalle, Enrique; Ortín, Jordi, 1959-; Casademunt i Viader, Jaume
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Other authors:
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Universitat de Barcelona |
Abstract:
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We demonstrate that wetting effects at moving contact lines have a strong impact in viscous fingering patterns. Experiments in a rotating Hele-Shaw (HS) cell, dry or prewetted, show consistent morphological differences. When the wetting fluid invades a dry region, contact angle dynamics yield a kinetic contribution to the interface pressure drop that scales with capillary number as Ca2¿3 but is significantly larger than the Park-Homsy kinetic correction. Numerical results are in very good agreement with experiments and show that standard HS equations work best for prewetted cells. |
Subject(s):
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-Viscositat -Dinàmica de fluids -Teoria quàntica -Teoria quàntica -Viscosity -Fluid dynamics -Quantum theory |
Rights:
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(c) The American Physical Society, 2006
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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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