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Título:	Relevance of dynamic wetting in viscous fingering patterns
Autor/a:	Alvarez Lacalle, Enrique; Ortín, Jordi, 1959-; Casademunt i Viader, Jaume
Otros autores:	Universitat de Barcelona
Abstract:	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.
Materia(s):	-Viscositat -Dinàmica de fluids -Teoria quàntica -Teoria quàntica -Viscosity -Fluid dynamics -Quantum theory
Derechos:	(c) The American Physical Society, 2006
Tipo de documento:	Artículo Artículo - Versión publicada
Editor:	The American Physical Society
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