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Upwind sail aerodynamics : A RANS numerical investigation validated with wind tunnel pressure measurements

hal.structure.identifierSchool of Marine Science and Technology
dc.contributor.authorVIOLA, I.M
hal.structure.identifierInstitut de Recherche de l'Ecole Navale [IRENAV]
dc.contributor.authorBOT, Patrick
hal.structure.identifierSchool of Marine Science and Technology
dc.contributor.authorRIOTTE, M.
dc.date.accessioned2021-05-14T09:59:44Z
dc.date.available2021-05-14T09:59:44Z
dc.date.issued2012
dc.identifier.issn0142-727X
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/78057
dc.description.abstractEnThe aerodynamics of a sailing yacht with different sail trims are presented, derived from simulations performed using Computational Fluid Dynamics. A Reynolds-averaged Navier-Stokes approach was used to model sixteen sail trims first tested in a wind tunnel, where thepressure distributions on the sails were measured. An original approach was employed byusing two successive simulations: the first one on a large domain to model the blockage due to the wind tunnel walls and the sails model, and a second one on a smaller domain to model the flow around the sails model. A verification and validation of the computed aerodynamic forces and pressure distributions was performed. The computed pressure distribution is shown to agree well with the measured pressures. The sail surface pressure was correlated with the increase of turbulent viscosity in the laminar separation bubble, the flow reattachment and the trailing edge separation. The drive force distribution on both sails showed that the fore part of the genoa (fore sail) provides the majority of the drive force and that the effect of the aft sail is mostly to produce an upwash effect on the genoa. An aerodynamic model based on potential flow theory and a viscous correction is proposed. This model, with one free parameter to be determined, is shown to fit the results better than the usual form drag and induced drag only, even if no friction drag is explicitly considered.
dc.language.isoen
dc.publisherElsevier
dc.subject.ensail aerodynamics
dc.subject.enCFD
dc.subject.enRANS
dc.subject.enyacht
dc.subject.enlaminar separation bubble
dc.subject.enviscous drag
dc.title.enUpwind sail aerodynamics : A RANS numerical investigation validated with wind tunnel pressure measurements
dc.typeArticle de revue
dc.identifier.doi10.1016/j.ijheatfluidflow.2012.10.004
dc.subject.halPhysique [physics]/Physique [physics]/Dynamique des Fluides [physics.flu-dyn]
dc.subject.halMathématiques [math]/Analyse numérique [math.NA]
dc.subject.halSciences de l'ingénieur [physics]/Mécanique [physics.med-ph]/Mécanique des fluides [physics.class-ph]
dc.subject.halPhysique [physics]/Mécanique [physics]/Mécanique des fluides [physics.class-ph]
bordeaux.journalInternational Journal of Heat and Fluid Flow
bordeaux.page90-101
bordeaux.volume39
bordeaux.hal.laboratoriesInstitut de Mécanique et d’Ingénierie de Bordeaux (I2M) - UMR 5295*
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionBordeaux INP
bordeaux.institutionCNRS
bordeaux.institutionINRAE
bordeaux.institutionArts et Métiers
bordeaux.peerReviewedoui
hal.identifierhal-01071323
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01071323v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=International%20Journal%20of%20Heat%20and%20Fluid%20Flow&rft.date=2012&rft.volume=39&rft.spage=90-101&rft.epage=90-101&rft.eissn=0142-727X&rft.issn=0142-727X&rft.au=VIOLA,%20I.M&BOT,%20Patrick&RIOTTE,%20M.&rft.genre=article


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