螺旋桨-扭曲舵系统水动力性能数值预报  

Numerical Prediction of the Hydrodynamic Performance of a Propeller-twisted Rudder System

作　　者：付翯翯 邹早建[1,2] 

机构地区：[1]上海交通大学船舶海洋与建筑工程学院,上海200240 [2]上海交通大学海洋工程国家重点实验室,上海200240

出　　处：《船海工程》2016年第3期21-25,共5页Ship & Ocean Engineering

基　　金：国家自然科学基金(51309152)

摘　　要：采用CFD方法对由螺旋桨和扭曲舵组成的桨-舵系统的水动力进行数值计算,采用非定常RANS方程和RNG k-ε湍流模型,使用滑移网格模拟螺旋桨旋转。对由B4-70型螺旋桨和常规舵组成的桨-舵系统进行数值计算,和试验数据对比验证数值方法的有效性;以某螺旋桨及NACA剖面常规舵、扭曲舵、带舵球的扭曲舵和带端板的扭曲舵4种舵型为对象的桨-舵系统进行数值预报,分析舵型对螺旋桨水动力性能的影响、舵表面压力分布以及不同舵角下舵升力的变化规律。结果表明,设计工况扭曲舵能提高敞水效率的效果;大舵角时,扭曲舵可以提高舵升力;选择扭曲舵的时候,要考虑与螺旋桨的配型问题。The CFD method is applied to calculate numerically the hydrodynamic forces on the propeller-rudder system composed of a propeller and a twisted rudder with the unsteady RANS equations in conjunction with a RNG k-ε turbulence model. The sliding mesh is used to simulate the rotating propeller. The hydrodynamic forces on a 134-70 propeller and a conventional rudder are calculated, and the results are compared with the experimental data to verify the numerical method. Taking the models of a propeller and a conventional rudder with NACA profile, a twisted rudder, a twisted rudder with bulb and a twisted rudder with end plate as study objects, the hydrodynamic performance of the propeller-rudder systems is predicted numerically. The effect of the rudder types on the hydrodynamic performances of the propeller, pressure distribution on rudders, and lift characteristics of the rudders under different rudder angles are analyzed. It is shown that the twisted rudder can increase the propulsion efficiency at design condition. Lift coefficients of all twisted rudders are increased under larger rudder angles. The twisted rudder needs to match appropriate propeller.

关 键 词：扭曲舵 桨-舵系统 水动力 计算流体动力学 数值预报 

分 类 号：U661.31[交通运输工程—船舶及航道工程]