Fluctuations in Fluid Invasion into Disordered Media
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© 2007 American Physical Society (APS). This is the accepted version of the following article: Rost, Martin & Laurson, Lasse & Dubé, Martin & Alava, Mikko J. 2007. Fluctuations in Fluid Invasion into Disordered Media. Physical Review Letters. Volume 98, Issue 5. 054502/1-4. ISSN 0031-9007 (printed). DOI: 10.1103/physrevlett.98.054502, which has been published in final form at http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.98.054502.
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Date
2007
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Mcode
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Language
en
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054502/1-4
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Physical Review Letters, Volume 98, Issue 5
Abstract
Interfaces moving in a disordered medium exhibit stochastic velocity fluctuations obeying universal scaling relations related to the presence or absence of conservation laws. For fluid invasion of porous media, we show that the fluctuations of the velocity are governed by a geometry-dependent length scale arising from fluid conservation. This result is compared to the statistics resulting from a nonequilibrium (depinning) transition between a moving interface and a stationary, pinned one.Description
Keywords
disordered systems, dynamics of interfaces
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Citation
Rost, Martin & Laurson, Lasse & Dubé, Martin & Alava, Mikko J. 2007. Fluctuations in Fluid Invasion into Disordered Media. Physical Review Letters. Volume 98, Issue 5. 054502/1-4. ISSN 0031-9007 (printed). DOI: 10.1103/physrevlett.98.054502.