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Communication Dans Un Congrès Année : 2013

Wind-tunnel pressure measurements on model-scale rigid downwind sails

Résumé

This paper describes an experiment that was carried out in the Twisted Flow Wind Tunnel at The University of Auckland to measure a detailed set of pressure distributions on a rigid 1/15th scale model of a modern asymmetric spinnaker. It was observed that the pressures varied considerably up the height of the spinnaker. The fine resolution of pressure taps allowed the extent of leading edge separation bubbles, pressure recovery region, and effect of sail curvature to be observed quite clearly. It was found that the shape of the pressure distributions could be understood in terms of conventional aerodynamic theory. The sail performed best at an apparent wind angle of about 55°, which is its design angle, and the effect of heel was more pronounced near the head than the foot.
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Dates et versions

hal-02110127 , version 1 (25-04-2019)

Identifiants

  • HAL Id : hal-02110127 , version 1

Citer

Patrick Bot, Ignazio Maria Viola, Richard G.J. Flay, Jean-Sébastien Brett. Wind-tunnel pressure measurements on model-scale rigid downwind sails. The Third International Conference on Innovation in High Performance Sailing Yachts, INNOVSAIL, Lorient, France, Jun 2013, Lorient, France. pp.119-127. ⟨hal-02110127⟩
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