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Intrinsic versus superrough anomalous scaling in spontaneous imbibition

Pradas, M. and Hernández-Machado, A. (2006). Intrinsic versus superrough anomalous scaling in spontaneous imbibition. Physical Review E, 74 041608.

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We study spontaneous imbibition using a phase field model in a two-dimensional system with a dichotomic quenched noise. By imposing a constant pressure μa<0 at the origin, we study the case when the interface advances at low velocities, obtaining the scaling exponents z=3.0±0.1, α=1.50±0.02, and αloc=0.95±0.03 within the intrinsic anomalous scaling scenario. These results are in quite good agreement with experimental data recently published. Likewise, when we increase the interface velocity, the resulting scaling exponents are z=4.0±0.1, α=1.25±0.02, and αloc=0.95±0.03. Moreover, we observe that the local properties of the interface change from a superrough to an intrinsic anomalous description when the contrast between the two values of the dichotomic noise is increased. From a linearized interface equation we can compute analytically the global scaling exponents which are comparable to the numerical results, introducing some properties of the quenched noise.

Item Type: Journal Item
Copyright Holders: 2006 The American Physical Society
ISSN: 1550-2376
Project Funding Details:
Funded Project NameProject IDFunding Body
Not SetProject BFM2003-07749-C05Not Set
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Mathematics and Statistics
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Item ID: 41203
Depositing User: Marc Pradas
Date Deposited: 30 Oct 2014 11:31
Last Modified: 07 Dec 2018 10:26
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