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dc.contributor.authorLalanne, Benjamin
dc.contributor.authorTanguy, Sebastien
dc.contributor.authorVejrazka, Jiri
dc.contributor.authorMasbernat, Olivier
dc.contributor.authorRisso, Frederic
dc.date.accessioned2017-11-08T06:56:18Z
dc.date.available2017-11-08T06:56:18Z
dc.date.issued2015
dc.identifier.isbn978-82-536-1433-5
dc.identifier.isbn978-82-536-1432-8
dc.identifier.issn2387-4295
dc.identifier.urihttp://hdl.handle.net/11250/2464763
dc.description.abstractThis paper deals with drop and bubble break-up modelling in turbulent flows. We consider the case where the drop/bubble slip velocity is smaller than or of the order of the turbulent velocity scales, or when the drop/bubble deformation is mainly caused by the turbulent stress (atomisation is not addressed here). The deformation of a drop is caused by continuous interactions with turbulent vortices; the drop responds to these interactions by performing shape-oscillations and breaks up when its deformation reaches a critical value. Following these observations, we use a model of forced oscillator that describes the drop deformation dynamics in the flow to predict its break-up probability. Such a model requires a characterization of the shape-oscillation dynamics of the drop. As this dynamics is theoretically known only under restrictive conditions (without gravity, surfactants), CFD two-phase flow simulations, based on the Level-Set and Ghost Fluid methods, are used to determine the interface dynamics in more complex situations: deformation of a drop in the presence of gravity, bubble-vortex interactions. Results are compared with experimental data. The perspectives to apply this model to breakup in emulsification processes are also discussed.
dc.language.isoeng
dc.publisherSINTEF Academic Press
dc.relation.ispartofSelected papers from 10th International Conference on Computational Fluid Dynamics in the Oil & Gas, Metallurgical and Process Industries
dc.relation.ispartofseriesSINTEF Proceedings;1
dc.subjectBubble and droplet dynamics
dc.subjectDNS
dc.subjectBreakup modelling
dc.subjectTurbulent flows
dc.subjectEmulsion
dc.titleDrop breakup modelling in turbulent flows
dc.typeChapter
dc.typeConference object
dc.typePeer reviewed
dc.description.versionpublishedVersion
dc.rights.holder© 2015 SINTEF Academic Press
dc.subject.nsiVDP::Technology: 500


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