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Wind tunnel investigation of dynamic trimming on upwind sail aerodynamics

hal.structure.identifierInstitut de Recherche de l'Ecole Navale [IRENAV]
dc.contributor.authorAUBIN, Nicolas
hal.structure.identifierInstitut de Recherche de l'Ecole Navale [IRENAV]
dc.contributor.authorAUGIER, Benoît
hal.structure.identifierInstitut de Recherche de l'Ecole Navale [IRENAV]
dc.contributor.authorBOT, Patrick
hal.structure.identifierInstitut de Recherche de l'Ecole Navale [IRENAV]
dc.contributor.authorHAUVILLE, Frédéric
hal.structure.identifierInstitut de Recherche de l'Ecole Navale [IRENAV]
dc.contributor.authorSACHER, Matthieu
hal.structure.identifierUniversity of Auckland [Auckland]
dc.contributor.authorFLAY, Richard
dc.date.accessioned2021-05-14T09:42:19Z
dc.date.available2021-05-14T09:42:19Z
dc.date.issued2016
dc.date.conference2016-03-18
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/76723
dc.description.abstractEnAn experiment was performed in the Yacht Research Unit’s Twisted Flow Wind Tunnel (University of Auckland) to test the effect of dynamic trimming on three IMOCA 60 inspired mainsail models in an upwind (AWA = 60 ) unheeled configuration. This study presents dynamic fluid structure interaction results in well controlled conditions (wind, sheet length) with a dynamic trimming system. Trimming oscillations are done around an optimum value of CFobj previously found with a steady trim. Different oscillation amplitudes and frequencies of trimming are investigated. Measurements are done with a 6 component force balance and a load sensor giving access to the unsteady mainsail sheet load. The driving CFx and optimization target CFobj coefficient first decrease at low reduced frequency fr for quasisteady state then increase, becoming higher than the steady state situation. The driving force CFx and the optimization target coefficient CFobj show an optimum for the three different design sail shapes located at fr = 0:255. This optimum is linked to the power transmitted to the rig and sail system by the trimming device. The effect of the camber of the design shape is also investigated. The flat mainsail design benefits more than the other mainsail designs from the dynamic trimming compared to their respective steady situtation. This study presents dynamic results that cannot be accurately predicted with a steady approach. These results are therefore valuable for future FSI numerical tools validations in unsteady conditions.
dc.language.isoen
dc.source.title22nd CSYS
dc.title.enWind tunnel investigation of dynamic trimming on upwind sail aerodynamics
dc.typeCommunication dans un congrès avec actes
dc.subject.halSciences de l'ingénieur [physics]/Mécanique [physics.med-ph]/Mécanique des fluides [physics.class-ph]
bordeaux.page111-121
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.countryUS
bordeaux.title.proceeding22nd Chesapeake Sailing Yacht Symposium
bordeaux.conference.cityAnnapolis
bordeaux.peerReviewedoui
hal.identifierhal-02141329
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02141329v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.btitle=22nd%20CSYS&rft.date=2016&rft.spage=111-121&rft.epage=111-121&rft.au=AUBIN,%20Nicolas&AUGIER,%20Beno%C3%AEt&BOT,%20Patrick&HAUVILLE,%20Fr%C3%A9d%C3%A9ric&SACHER,%20Matthieu&rft.genre=proceeding


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