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Queralt-Martín, M.; Pradas, M.; Rodríguez-Trujillo, R.; Arundell, M.; Corvera Poiré, E. and Hernández-Machado, A.
(2011).
DOI: https://doi.org/10.1103/PhysRevLett.106.194501
Abstract
Rare events appear in a wide variety of phenomena such as rainfall, floods, earthquakes, and risk. We demonstrate that the stochastic behavior induced by the natural roughening present in standard microchannels is so important that the dynamics for the advancement of a water front displacing air has plenty of rare events. We observe that for low pressure differences the hydrophobic interactions of the water front with the walls of the microchannel put the front close to the pinning point. This causes a burstlike dynamics, characterized by series of pinning and avalanches, that leads to an extreme-value Gumbel distribution for the velocity fluctuations and a nonclassical time exponent for the advancement of the mean front position as low as 0.38.
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About
- Item ORO ID
- 41211
- Item Type
- Journal Item
- ISSN
- 1079-7114
- Project Funding Details
-
Funded Project Name Project ID Funding Body Not Set FIS2009- 12964-C05-02 MICINN Not Set SGR-2009-0014 DURSI Multiflow Not Set EU-FP7 ITN Not Set 83149 CONACYT - Extra Information
- 4 pp.
- Academic Unit or School
-
Faculty of Science, Technology, Engineering and Mathematics (STEM) > Mathematics and Statistics
Faculty of Science, Technology, Engineering and Mathematics (STEM) - Copyright Holders
- © 2011 American Physical Society
- Depositing User
- Marc Pradas