Title:
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Anomalous Roughening of Viscous Fluid Fronts in Spontaneous Imbibition
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Author:
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Soriano i Fradera, Jordi; Mercier, A.; Planet Latorre, Ramon; Hernández Machado, Aurora; Rodríguez, M. A.; Ortín, Jordi, 1959-
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Other authors:
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Universitat de Barcelona |
Abstract:
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We report experiments on spontaneous imbibition of a viscous fluid by a model porous medium in the absence of gravity. The average position of the interface satisfies Washburn's law. Scaling of the interface fluctuations suggests a dynamic exponent z ≃ 3 , indicative of global dynamics driven by capillary forces. The complete set of exponents clearly shows that interfaces are not self-affine, exhibiting distinct local and global scaling, both for time ( β = 0.64 ± 0.02 , β ∗ = 0.33 ± 0.03 ) and space ( α = 1.94 ± 0.20 , α loc = 0.94 ± 0.10 ). These values are compatible with an intrinsic anomalous scaling scenario. |
Subject(s):
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-Física de partícules -Experiments -Particle physics -Experiments |
Rights:
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(c) American Physical Society, 2005
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Document type:
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Article Article - Published version |
Published by:
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American Physical Society
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