Título:
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Avalanches and non-gaussian fluctuations of the global velocity of imbibition fronts
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Autor/a:
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Planet Latorre, Ramon; Santucci, Stéphane; Ortín, Jordi, 1959-
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Otros autores:
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Universitat de Barcelona |
Abstract:
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We present an experimental study of the global velocity V ( t ) of a viscous fluid interface during forced-flow imbibition in a disordered medium. Our high resolution setup shows that the fronts display an intermittent behavior signature of a burstlike dynamics, with power-law distributed avalanches. When measured at scales comparable to the correlation length, velocity fluctuations follow an asymmetric non-Gaussian distribution, whose skewness increases with decreasing measuring window and/or injection flow rate, offering the effective number of degrees of freedom probed in our experiment. |
Materia(s):
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-Física de partícules -Experiments -Particle physics -Experiments |
Derechos:
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(c) American Physical Society, 2009
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Tipo de documento:
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Artículo Artículo - Versión publicada |
Editor:
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American Physical Society
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