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Band instability in near-critical fluids subjected to vibration under weightlessness

hal.structure.identifierInstitute of Continuous Media Mechanics
dc.contributor.authorLYUBIMIVA, Tatyana
hal.structure.identifierInstitute of Continuous Media Mechanics
dc.contributor.authorIVANTSOV, Andrey
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorGARRABOS, Yves
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorLECOUTRE-CHABOT, Carole
hal.structure.identifierService des Basses Températures [SBT ]
dc.contributor.authorGANDIKOTA, Gurunath Sharma
hal.structure.identifierService des Basses Températures [SBT ]
hal.structure.identifierPhysique et mécanique des milieux hétérogenes (UMR 7636) [PMMH]
dc.contributor.authorBEYSENS, Daniel
dc.date.issued2017
dc.identifier.issn2470-0045
dc.description.abstractEnPeriodical patterns (bands) developing at the interface of two immiscible fluids under vibration parallel to interface are observed under zero-gravity conditions. Fluids are slightly below their liquid-vapor critical point where they behave in a scaled, universal manner. In addition, liquid and vapor densities are close and surface tension is very low. Linear stability analyses and direct numerical simulation show that this instability, although comparable to the frozen wave instability observed in a gravity field, is nonetheless noticeably different when gravity becomes zero. In particular, the neutral curve minimum corresponds to the long-wave perturbations with k=0 and zero dimensionless vibrational parameter, corresponding to no instability threshold. The pattern wavelength thus corresponds to the wavelength of the perturbations with maximal growth rate. This wavelength differs substantially from the neutral perturbations wavelength at the same vibrational parameter value. The role of viscosity is highlighted in the pattern formation, with a critical wavelength dependence on vibration parameters that strongly depends on viscosity. These results compare well with experimental observations performed in the liquid-vapor phases near the critical point of CO2 (in weightlessness) and H2 (under magnetic levitation).
dc.language.isoen
dc.publisherAmerican Physical Society (APS)
dc.title.enBand instability in near-critical fluids subjected to vibration under weightlessness
dc.typeArticle de revue
dc.identifier.doi10.1103/PhysRevE.95.013105
dc.subject.halPhysique [physics]/Mécanique [physics]/Mécanique des fluides [physics.class-ph]
dc.subject.halPhysique [physics]/Mécanique [physics]/Vibrations [physics.class-ph]
bordeaux.journalPhysical Review E
bordeaux.page013105
bordeaux.volume95
bordeaux.issue1
bordeaux.peerReviewedoui
hal.identifierhal-01475531
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01475531v1
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