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Drag enhancement and drag reduction in viscoelastic fluid flow around a cylinder

hal.structure.identifierInstitut de Mathématiques de Bordeaux [IMB]
dc.contributor.authorXIONG, Yong Liang
hal.structure.identifierInstitut de Mathématiques de Bordeaux [IMB]
dc.contributor.authorBRUNEAU, Charles-Henri
hal.structure.identifierCentre de physique moléculaire optique et hertzienne [CPMOH]
dc.contributor.authorKELLAY, Hamid
dc.date.created2010-06-16
dc.date.issued2010-09
dc.identifier.issn0295-5075
dc.description.abstractEnWe here use direct numerical simulations to describe the flow of a viscoelastic fluid, modeled using the so-called Oldroyd B model, around a cylinder in two dimensions. A wide range of flow parameters is covered in these simulations allowing to draw definitive conclusions as to the effect of viscoelasticity on such a flow situation. Both drag enhancement and drag reduction are observed and a phase diagram is proposed in the parameter space Reynolds number vs. Weissenberg number. While only drag enhancement is observed below a Reynolds number of 40, both drag enhancement and drag reduction are observed for higher Reynolds numbers indicating that drag reduction is a feature associated with the shedding of vortices behind the cylinder. An interesting observation accompanies the onset of drag enhancement in the vortex-shedding regime: the shedding is suppressed.
dc.language.isoen
dc.publisherEuropean Physical Society/EDP Sciences/Società Italiana di Fisica/IOP Publishing
dc.rights.urihttp://creativecommons.org/licenses/by-sa/
dc.title.enDrag enhancement and drag reduction in viscoelastic fluid flow around a cylinder
dc.typeArticle de revue
dc.identifier.doi10.1209/0295-5075/91/64001
dc.subject.halPhysique [physics]/Matière Condensée [cond-mat]/Matière Molle [cond-mat.soft]
dc.subject.halPhysique [physics]/Physique [physics]/Dynamique des Fluides [physics.flu-dyn]
bordeaux.journalEPL - Europhysics Letters
bordeaux.volume91
bordeaux.issue6
bordeaux.peerReviewedoui
hal.identifierinria-00546810
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//inria-00546810v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=EPL%20-%20Europhysics%20Letters&rft.date=2010-09&rft.volume=91&rft.issue=6&rft.eissn=0295-5075&rft.issn=0295-5075&rft.au=XIONG,%20Yong%20Liang&BRUNEAU,%20Charles-Henri&KELLAY,%20Hamid&rft.genre=article


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