Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/18689
Title: Intrinsic versus superrough anomalous scaling in spontaneous imbibition
Author: Pradas Gené, Marc
Hernández Machado, Aurora
Keywords: Interfícies (Ciències físiques)
Interfaces (Physical sciences)
Issue Date: 2006
Publisher: The American Physical Society
Abstract: We study spontaneous imbibition using a phase field model in a two dimensional system with a dichotomic quenched noise. By imposing a constant pressure $\mu_{a}<0$ at the origin, we study the case when the interface advances at low velocities, obtaining the scaling exponents $z=3.0\pm 0.1$, $\alpha=1.50\pm 0.02$ and $\alpha_{loc}= 0.95\pm 0.03$ 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 $z=4.0 \pm 0.1$, $\alpha=1.25\pm 0.02$ and $\alpha_{loc}= 0.95\pm 0.03$. Moreover, we observe that the local properties of the interface change from a super-rough 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.
Note: Reproducció del document publicat a: http://dx.doi.org/10.1103/PhysRevE.74.041608
It is part of: Physical Review E, 2006, vol. 74, p. 041608-1-041608-11
Related resource: http://doi.org/10.1103/PhysRevE.74.041608
URI: http://hdl.handle.net/2445/18689
ISSN: 1539-3755
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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