【作者】 闯振菊； 黄胜； 胡健；

【Author】 CHUANG Zhen-ju~1 HUANG Sheng~2 HU Jian~3 (1.Harbin Engineering University,Harbin,150001 2,3 Harbin Engineering University,Harbin,150001)

【机构】 哈尔滨工程大学船舶工程学院；

【摘要】 采用了 CFD 方法计算了敞水拖式吊舱推进器的水动力性能,分析了不同来流情况下螺旋桨以及吊舱于一个周期内在 X,Y,Z 三个方向上的推力及转矩的变化。首先采用 MRF(多重参考系)方法计算了 pod 的性征曲线,得到了螺旋桨在任意工作情况下的全面性能;然后采用 Moving Mesh(滑移网格)的方法,真实地模拟出吊舱推进器在工作状态下推力以及转矩的变化情况,计算结果表明推力及转矩呈周期性振荡变化,并且振荡的频率以一倍叶频为主. 同时给出了螺旋桨及吊舱的压力和速度分布图,以及螺旋桨桨叶剖面处的轴向,切向的速度分布。更多还原

【Abstract】 Use CFD method to calculate the hydrodynamic performance of the pod,analysis propeller and pod’s force and moment’ change in one periodicity under the condition of different flow rates.First,use Moving Reference Frame method to calculate the pod’ character curve,and get the over-all performance of the pod;and then adopt the Moving Mesh method to objectively simulate the working condition of the pod.Calculation result showed that the force and moment changed periodically.And the period is connected with the number of the blades.This paper calculated a four-blade propeller,so the agitation cycle of the force and moment are a quarter of the periodic of the propeller.Meanwhile,this paper showed the pressure and velocity distribution graphics,and also showed the axial,radial and the tangential velocity graphics on the surface of the blades.更多还原