船后吊舱推进器的水动力性能研究

为了分析船体形状对吊舱推进器的影响,研究了船后伴流中吊舱推进器的水动力性能.船后伴流用计算流体力学方法进行分析,吊舱推进器的水动力性能用面元法研究,吊舱和螺旋桨的相互影响用迭代方法求解,用蒙瑞诺解析公式计算螺旋桨和吊舱之间的诱导速度,结合船尾伴流的计算结果分析船尾伴流中吊舱推进器的水动力性能,并对船后不同位置吊舱推进器的水动力性能进行了比较.研究认为,船尾伴流会降低吊舱推进器的效率,吊舱推进器距离船体越远,效率越高.

Hydrodynamic behavior of a POD propeller in a ship's wake

The paper mainly deals with the influence of a ship's hull on its POD propeller.The hydrodynamic behavior of POD in a wake was investigated.The wake velocity distribution was calculated with computational fluid dynamics method, the hydrodynamic behavior of the POD propeller was evaluated using the surface panel method.The interaction between the POD and the propeller was determined by iterative calculations.The induced velocity between the POD and the propeller was calculated by the Morino formula.Using the calculated results for the ship's wake,the hydrodynamic performance of the POD propeller was then analyzed.The research showed that a ship's wake can significantly reduce the efficiency of a POD propeller.The greater the distance between a POD propeller and the ship's hull,the higher the efficiency of a POD propeller.