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https://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 |
URI: | https://hdl.handle.net/2445/18689 |
Related resource: | http://doi.org/10.1103/PhysRevE.74.041608 |
ISSN: | 1539-3755 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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