上海交通大学学报

上海交通大学学报（自然版） ›› 2013, Vol. 47 ›› Issue (06): 932-937.

• 交通运输 • 上一篇    下一篇

吊舱推进器桨毂间隙影响的数值分析

董小倩，杨晨俊   

  1. (上海交通大学 海洋工程国家重点实验室,上海 200240)
     
  • 收稿日期:2012-10-15
  • 基金资助:

    海洋工程国家重点实验室2012年度自主研究基金（GKZD0100593）

CFD Study of Hub Gap Effect on Podded Propulsor Performance

DONG Xiaoqian,YANG Chenjun
  

  1. (State Key Laboratory of Ocean Engineering, Shanghai Jiaotong University, Shanghai 200240, China)
  • Received:2012-10-15

摘要：

以拖式吊舱推进器为对象，采用求解RANS（Reynolds Averaged NavierStokes）方程的方法研究桨毂间隙对水动力性能的影响，应用滑移网格技术处理桨叶与吊舱的非定常相互作用.分别计算了具有不同间隙宽度的模型，以考察有、无间隙以及间隙宽度变化对推进器各部分水动力的影响.计算结果表明：桨毂间隙对推进器单元水动力及桨叶水动力的影响均很小；桨毂间隙内压力作用于桨毂后端面形成推力，其大小约为桨叶推力的2%~3%；桨毂后端面与桨叶随边的距离一定时，间隙内压力随间隙宽度的增大而降低.
 
 

关键词: 吊舱推进器, 水动力性能, 桨毂间隙, 计算流体力学, 滑移网格

Abstract:

A CFD study of the hub gap effect on podded propulsor performance was presented. The sliding mesh model was employed to simulate the unsteady interaction between propeller blades and the pod housing. To investigate the effect of hub gap width on the hydrodynamic forces acting upon various parts of the propulsor, several cases with different gap widths were calculated. The numerical results indicate that the hub gap has little influence on the hydrodynamic forces of the propulsor unit and propeller blades; the pressure on the downstream face of the hub acts as a thrust, of which the magnitude is appoximately 2%~3% of the blade thrust; and when the distance between the downstream face of the hub and the propeller trailing edge is kept constant, the hub gap pressure decreases with increasing hub gap width.

Key words: podded propulsor, hydrodynamic performance, hub gap, computational fluid dynamics (CFD), sliding mesh

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