Drag enhancement and drag reduction in viscoelastic fluid flow around a cylinder
| hal.structure.identifier | Institut de Mathématiques de Bordeaux [IMB] | |
| dc.contributor.author | XIONG, Yong Liang | |
| hal.structure.identifier | Institut de Mathématiques de Bordeaux [IMB] | |
| dc.contributor.author | BRUNEAU, Charles-Henri | |
| hal.structure.identifier | Centre de physique moléculaire optique et hertzienne [CPMOH] | |
| dc.contributor.author | KELLAY, Hamid | |
| dc.date.created | 2010-06-16 | |
| dc.date.issued | 2010-09 | |
| dc.identifier.issn | 0295-5075 | |
| dc.description.abstractEn | We 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.iso | en | |
| dc.publisher | European Physical Society/EDP Sciences/Società Italiana di Fisica/IOP Publishing | |
| dc.rights.uri | http://creativecommons.org/licenses/by-sa/ | |
| dc.title.en | Drag enhancement and drag reduction in viscoelastic fluid flow around a cylinder | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1209/0295-5075/91/64001 | |
| dc.subject.hal | Physique [physics]/Matière Condensée [cond-mat]/Matière Molle [cond-mat.soft] | |
| dc.subject.hal | Physique [physics]/Physique [physics]/Dynamique des Fluides [physics.flu-dyn] | |
| bordeaux.journal | EPL - Europhysics Letters | |
| bordeaux.volume | 91 | |
| bordeaux.issue | 6 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | inria-00546810 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//inria-00546810v1 | |
| bordeaux.COinS | ctx_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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