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Published version

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2009-03-03

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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/135980

Avalanches and non-gaussian fluctuations of the global velocity of imbibition fronts

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https://doi.org/10.1103/PhysRevLett.102.094502

Abstract

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.

Subject

Física de partícules, Experiments

Subject (English)

Particle physics, Experiments

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Articles publicats en revistes (Física de la Matèria Condensada)

Citation

PLANET LATORRE, Ramon, SANTUCCI, Stéphane and ORTÍN, Jordi. Avalanches and non-gaussian fluctuations of the global velocity of imbibition fronts. Physical Review Letters. 2009. Vol. 102, num. 9, pags. 094502. ISSN 0031-9007. [consulted: 15 of August of 2026]. Available at: https://hdl.handle.net/2445/135980

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