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| Deparday, Julien; Bot, Patrick; Hauville, Frédéric; Augier, Benoit; Rabaud, Marc; Motta, Dario; Le Pelley, David. |
| While sailing offwind, the trimmer typically adjusts the downwind sail “on the verge of luffing”, occasionally letting the luff of the sail flap. Due to the unsteadiness of the spinnaker itself, maintaining the luff on the verge of luffing requires continual adjustments. The propulsive force generated by the offwind sail depends on this trimming and is highly fluctuating. During a flapping sequence, the aerodynamic load can fluctuate by 50% of the average load. On a J/80 class yacht, we simultaneously measured time-resolved pressures on the spinnaker, aerodynamic loads, boat data and wind data. Significant spatio-temporal patterns were detected in the pressure distribution. In this paper we present averages and main fluctuations of pressure distributions... |
| Tipo: Text |
Palavras-chave: Full scale experiment; Instrumented boat; Spinnaker; Fluid structure interaction; POD; Unsteady. |
| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00597/70918/69156.pdf |
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