Full-scale flying shape measurement of offwind yacht sails with photogrammetry

Autor: Benoit Augier, Frédéric Hauville, Patrick Bot, Marc Rabaud, Julien Deparday
Přispěvatelé: Institut de Recherche de l'Ecole Navale (IRENAV), Université de Bordeaux (UB)-Institut Polytechnique de Bordeaux-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Arts et Métiers Sciences et Technologies, HESAM Université (HESAM)-HESAM Université (HESAM), Université Paris-Saclay
Jazyk: angličtina
Rok vydání: 2016
Předmět:
[PHYS.PHYS.PHYS-FLU-DYN]Physics [physics]/Physics [physics]/Fluid Dynamics [physics.flu-dyn]
Engineering
Environmental Engineering
Instrumentations et Détecteurs [Physique]
Soft membrane
Flow (psychology)
Full scale
020101 civil engineering
Ocean Engineering
02 engineering and technology
Yacht sails
01 natural sciences
[SPI.MECA.MEFL]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Fluids mechanics [physics.class-ph]
010305 fluids & plasmas
0201 civil engineering
Camber (aerodynamics)
Fluid Structure Interaction
0103 physical sciences
Fluid–structure interaction
[PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det]
Mécanique: Mécanique des structures [Sciences de l'ingénieur]
Aerospace engineering
Apparent wind
business.industry
Aerodynamics
Photogrammetry
[SPI.MECA.STRU]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Structural mechanics [physics.class-ph]
Full-scale experiment
Flapping
Dynamique des Fluides [Physique]
business
Mécanique: Mécanique des fluides [Sciences de l'ingénieur]
Marine engineering
Zdroj: Ocean Engineering
Ocean Engineering, Elsevier, 2016, 127, pp.135-143. ⟨10.1016/j.oceaneng.2016.09.043⟩
ISSN: 0029-8018
DOI: 10.1016/j.oceaneng.2016.09.043⟩
Popis: International audience; Yacht downwind sails are complex to study due to their non-developable shape with high camber and massively detached flow around thin and flexible membranes. Numerical simulations can now simulate this strong fluid-structure interaction, but need experimental validation. It remains complex to measure spinnaker flying shapes partly because of their inherent instability, like luff flapping. This work presents full-scale experimental investigation of spinnaker shapes with simultaneous measurement of aerodynamic loads on the three sail corners, with navigation and wind data. The experimental set-up and photogrammetric method are presented. Results are analysed in the whole range of apparent wind angle for this sail. The spinnaker shape shows dramatic variations and high discrepancies with the design shape. The photogrammetric measurement produces the full 3D flying shape with a satisfactory accuracy. Even if only steady state results are given here, this new system enables time-resolved measurement of flying shapes and thus flapping of spinnakers to be investigated, which is valuable for yacht performance optimisation. On top of sailing yacht applications, the method is useful in any application where a non-developable 3D shape is to be determined, and particularly when it results from the Fluid Structure Interaction of a flexible structure with a complex flow.
Databáze: OpenAIRE
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