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hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorJHA, Aditya
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorAMAROUCHENE, Yacine
hal.structure.identifierLaboratoire Ondes et Matière d'Aquitaine [LOMA]
dc.contributor.authorSALEZ, Thomas
dc.date.accessioned2024-03-29T03:09:33Z
dc.date.available2024-03-29T03:09:33Z
dc.date.issued2024-03-27
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/189082
dc.description.abstractEnTwo cylinders rotating next to each other generate a large hydrodynamic force if the intermediate space is filled with a viscous fluid. Herein, we explore the case where the cylinders are separated by two layers of viscous immiscible fluids, in the limit of small capillary deformation of the fluid interface. As the interface deformation breaks the system's symmetry, a novel force characteristic of soft lubrication is generated. We calculate this capillary-lubrication force, which is split into velocity-dependant and acceleration-dependant contributions. Furthermore, we analyze the variations induced by modifying the viscosity ratio between the two fluid layers, their thickness ratio, and the Bond number. Unlike standard elastic cases, where a repelling soft-lubrication lift force has been abundantly reported, the current fluid bilayer setting can also exhibit an attractive force due to the non-monotonic deflection of the fluid interface when varying the sublayer thickness. Besides, at high Bond numbers, the system's response becomes analogous to the one of a Winkler-like substrate with a viscous flow inside.
dc.description.sponsorshipCapteur Interférométrique de Contraintes de Surface - ANR-21-CE06-0029
dc.description.sponsorshipFrottements dans les systèmes complexes - ANR-21-CE06-0039
dc.language.isoen
dc.subject.enlow-Reynolds-number flows
dc.subject.enlubrication theory
dc.subject.encapillarity
dc.subject.enfluid interfaces
dc.subject.enfluid-structure interactions
dc.subject.encontact mechanics
dc.title.enCapillary-lubrication force between rotating cylinders separated by a fluid interface
dc.typeDocument de travail - Pré-publication
dc.subject.halPhysique [physics]/Matière Condensée [cond-mat]/Matière Molle [cond-mat.soft]
dc.subject.halPhysique [physics]/Mécanique [physics]/Mécanique des fluides [physics.class-ph]
dc.subject.halPhysique [physics]/Physique [physics]/Chimie-Physique [physics.chem-ph]
dc.description.sponsorshipEuropeBrownian Motion near Soft Interfaces
bordeaux.hal.laboratoriesLaboratoire Ondes et Matière d'Aquitaine (LOMA) - UMR 5798*
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionCNRS
hal.identifierhal-04524093
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-04524093v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.date=2024-03-27&rft.au=JHA,%20Aditya&AMAROUCHENE,%20Yacine&SALEZ,%20Thomas&rft.genre=preprint


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