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Title: Disorder-induced capillary bursts control intermittency in slow imbibition
Author: Clotet i Fons, Xavier
Ortín, Jordi, 1959-
Santucci, Stéphane
Keywords: Física de partícules
Particle physics
Issue Date: 13-Aug-2014
Publisher: American Physical Society
Abstract: A multiscale analysis of the spatially averaged velocity of an imbibition front Vl measured at scale l reveals that the slow front dynamics is intermittent: the distributions of increments ΔVl(τ) evolve continuously through time scales τ, from heavy-tailed to Gaussian¿reached at a time lag τc set by the extent of the medium heterogeneities. Intermittency results from capillary bursts triggered from the smallest scale of the disorder up to the scale lc at which viscous dissipation becomes dominant. The effective number of degrees of freedom of the front l/lc controls its intensity.
Note: Reproducció del document publicat a:
It is part of: Physical Review Letters, 2014, vol. 113, num. 7, p. 074501
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ISSN: 0031-9007
Appears in Collections:Articles publicats en revistes (Física de la Matèria Condensada)

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