上海交通大学学报(自然版) ›› 2017, Vol. 51 ›› Issue (3): 314-.

• 海洋工程 • 上一篇    下一篇

抗空化扭曲舵的设计及其水动力性能分析

叶金铭,王威,于安斌,张凯奇   

  1. 海军工程大学 舰船工程系, 武汉 430033
  • 出版日期:2017-03-29 发布日期:2017-03-29
  • 基金资助:

    国家自然科学基金项目(51579243)资助

Design and Numerical Analysis of Hydrodynamic Performance for #br# AntiCavitation Twisted Rudder

YE Jinming,WANG Wei,YU Anbin,ZHANG Kaiqi   

  1. Department of Naval Architecture, Naval University of Engineering, Wuhan 430033, China
  • Online:2017-03-29 Published:2017-03-29

摘要:

摘要:  通过面元法计算螺旋桨尾流场,根据螺旋桨尾流场对扭曲舵各剖面的几何攻角进行设计,提出了抗空化扭曲舵的设计方法;采用计算流体动力学方法评价舵的水动力性能,并经过拖曳水池的舵力测量试验加以验证.结果表明,在不同的航速和舵角条件下,与普通舵相比,扭曲舵的负压力系数峰值明显较小,从而大幅提高了舵的抗空化性能,降低了舵的空化剥蚀和由舵产生空泡所引起的振动噪声.由于扭曲舵与螺旋桨的尾流匹配良好,在舵角为0°时,扭曲舵叶背的压力系数分布与叶面的压力系数分布基本重合,因而显著减小了直航时舵上的横向力和舵轴力矩,有利于舵和舵机的受力.

关键词: 螺旋桨, 扭曲舵, 空化, 尾流场, 压力分布

Abstract:

Abstract: The propeller wake is calculated by a surface panel method, and then the attack angle of the twisted rudder can be designed through the propeller wake. An approach of anticavitation twisted rudder is proposed. The hydrodynamic performance of rudder after propeller is calculated by a computational fluid dynamics (CFD) method, and it is validated by the rudder force tests. The pressure distributions of the twisted and ordinary rudders are compared with each other. The peak of negative pressure on the twisted rudder is smaller than that of the ordinary rudder. The twisted rudder has a better anticavitation performance and can reduce cavitation erosion,vibration and noise. Because the twisted rudder has better match performance for the propeller wake than the ordinary rudder, it has  lower cross force and torque than the ordinary rudder when the rudder angle is zero. The fact is favorable to rudder and steering engine.

Key words: propeller, twisted rudder, cavitation, wake field, pressure distribution

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