奥运帆船470级稳向板在不同攻角下的水动力性能研究

Investigation on Centerboard Hydrodynamics for 470 Class Yacht with Different Attack Angle

470级帆船是一种操控性能很好的奥运会竞赛帆船,帆船运动员在竞赛中的成功是依靠驾驶技巧,这就要求运动员对船体的操纵性能有一定的了解。稳向板是帆船重要的附体,对船体水动力性能具有较大影响。目前对470级帆船附体研究很少,为了让运动员对帆船附体水动力性能具有更科学的认识,采用计算流体力学CFD数值仿真技术,研究了稳向板在不同攻角条件下的升阻力系数、压力分布等水动力性能;并结合帆船比赛实际情况,分析了运动员在训练和比赛过程中调节稳向板的策略,为帆船成绩的提高提供了参考依据和技术指导。

470 Class is a double racing yacht and an Olympic item. It control performance is very good. Driving skills is one of the keys to success in the regatta. So,crews should have a certain comprehend to the manoeuvrability of the hull and centerboard. The centerboard is one of the important appendage to the hull,and it has great influence to the hydrodynamics of the hull. At present,Research on the hydrodynamics of the centerboard for 470 Class Yacht is not much. In order to make the players to have more scientific knowledge on manoeuvrability of the centerboard,numerical simulation based on Computational Fluid Dynamics（CFD） is used to study the hydrodynamics of the centerboard. The hydrodynamics of the Centerboard such as Lift and Resistance Coefficient,Pressure Distribution was studied. It is found that there are some differences for the hydrodynamics of the Centre-board when the centerboard with different attack angle. According to the study results,crews in the regatta should make reasonable adjustments to the angle between the hull and the centerboard if the navigational phase is different. The disciplines of the Hydrodynamics of the centerboard for 470 Class Yacht would provide a reference for athletes to adjust the centerboard in the training and competition.