桨后舵附推力鳍理论计算  

A Study on Performance of Rudder with Additional Thrust Fin

作　　者：郭春雨[1] 黄胜[1] 

机构地区：[1]哈尔滨工程大学船舶工程学院,黑龙江哈尔滨150001

出　　处：《中国造船》2007年第1期18-23,共6页Shipbuilding of China

摘　　要：螺旋桨与舵附推力鳍,分别采用升力面法和基于速度势的面元法计算,两者之间的相互干扰采用迭代计算。在计算面元的影响系数时,应用了Morino导出的解析计算公式,以加快数值的计算速度。分析了不同螺旋桨尾涡模型对舵附推力鳍水动力性能的影响,并提出一种新的螺旋桨尾涡模型。计算了加装舵附推力鳍之后螺旋桨尾流场周向诱导速度沿径向的分布。对影响推力鳍助推效率的几个主要参数进行了变尺度研究。The lifting surface method and the panel method are used for the calculation of propeller and rudder with additional thrust fin respectively. Hydrodynamic interaction between them is achieved by interactive calculation. First the open propeller is calculated consideresing the flow in front of the rudder and fin, then the propeller is calculated over again until the results are unchanged. Rudder and fin are regarded as a whole. In the process, the influence coefficients of the panels are determined by Morinor s analytical formulation for increasing numerically calculating speed. The distribution of pressure is calculated by the method of Yanagizawa so as to avoid the oddity in the derivative of potential of velocity. Several kinds of wake models are applied to calculate the performance of additional thrust fin. The first one is the linear wake model and it is considered as helicoids. The second one is the taper wake model. The third one inoseulates the two above for improving the precision of calculation. The distribution of tangential velocity of water behind the propeller is given when there is a rudder with additional thrust fin. This paper investigates the principal parameters which affect additional thdrust efficiency of the thrust fin. The change of efficiency of additional fin is calculated along with the different wingspan of fin, the parameters of fin and the angle of installation. From the results some advices for the experimentation are given, the wingspan of fin should be about the radius of propeller, the additional fin is suit for some heavy load ships and should avoid in some other ships, the angle of installation exited the optimal one. The comparison of the numerical results with other＇s results indicates that the present method is reliable, and can be put into application.

关 键 词：船舶 舰船工程 桨后舵附推力鳍 面元法 尾涡模型 

分 类 号：U661.313[交通运输工程—船舶及航道工程]