Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/18699
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dc.contributor.authorSoriano i Fradera, Jordicat
dc.contributor.authorOrtín, Jordi, 1959-cat
dc.contributor.authorHernández Machado, Auroracat
dc.date.accessioned2011-07-07T12:50:50Z-
dc.date.available2011-07-07T12:50:50Z-
dc.date.issued2003-
dc.identifier.issn1539-3755-
dc.identifier.urihttps://hdl.handle.net/2445/18699-
dc.description.abstractWe report experimental evidences of anomalous kinetic roughening in the stable displacement of an oil-air interface in a Hele-Shaw cell with strong quenched disorder. The disorder consists on a random modulation of the gap spacing transverse to the growth direction (tracks). We have performed experiments varying average interface velocity and gap spacing, and measured the scaling exponents. We have obtained beta=0.50, beta*=0.25, alpha=1.0, alpha_l=0.5, and z=2. When there is no fluid injection, the interface is driven solely by capillary forces, and a higher value of beta around beta=0.65 is measured. The presence of multiscaling and the particular morphology of the interfaces, characterized by high slopes that follow a L\'evy distribution, confirms the existence of anomalous scaling. From a detailed study of the motion of the oil--air interface we show that the anomaly is a consequence of different local velocities over tracks plus the coupling in the motion between neighboring tracks. The anomaly disappears at high interface velocities, weak capillary forces, or when the disorder is not sufficiently persistent in the growth direction. We have also observed the absence of scaling when the disorder is very strong or when a regular modulation of the gap spacing is introduced.-
dc.format.extent12 p.-
dc.format.mimetypeapplication/pdf-
dc.language.isoengeng
dc.publisherThe American Physical Societyeng
dc.relation.isformatofReproducció del document publicat a: http://dx.doi.org/10.1103/PhysRevE.67.056308cat
dc.relation.ispartofPhysical Review E, 2003, vol. E67, p. 056308-1-056308-12-
dc.relation.urihttp://dx.doi.org/10.1103/PhysRevE.67.056308-
dc.rights(c) The American Physical Society, 2003eng
dc.sourceArticles publicats en revistes (Física Quàntica i Astrofísica)-
dc.subject.classificationDinàmica de fluidscat
dc.subject.classificationInterfícies (Ciències físiques)cat
dc.subject.classificationPel·lícules finescat
dc.subject.classificationNanoestructurescat
dc.subject.otherFluid dynamicseng
dc.subject.otherInterfaces (Physical sciences)eng
dc.subject.otherThin filmseng
dc.subject.otherNanostructureseng
dc.titleAnomalous roughening in experiments of interfaces in Hele-Shaw flows with strong quenched disordereng
dc.typeinfo:eu-repo/semantics/article-
dc.typeinfo:eu-repo/semantics/publishedVersion-
dc.identifier.idgrec509775-
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess-
Appears in Collections:Articles publicats en revistes (Física Quàntica i Astrofísica)

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