摘要
扭曲舵的应用能提高推进装置的效率,文章采用了面元法来计算螺旋桨对舵的影响从而获得了不同舵剖面上的来流攻角,然后以最大附加推力为目的对舵剖面进行扭转,采用迭代处理计算了螺旋桨与桨后扭曲舵的相互干扰的水动力性能。并对设计出的扭曲舵进行了改良,将舵导边及其前缘进行扭转。计算结果表明,扭曲舵减小了压差阻力使得舵的总阻力减小,改善了舵的水动力性能,提高了桨舵系统效率;改良后的舵可更好地适应来流,同时减小了舵的摆动幅度,解决了由于叶剖面大幅摆动带来的问题。
The purpose of improving the efficiency of propulsion system can be achieved through lay-ing a twisted rudder. In order to get the inflow attack angles of every rudder section, the panel method is used to calculate the influence of the propeller on the rudder. According to the inflow attack an-gles, the sections are twisted to get the maximum additional thrust. An iterative method is used for the calculation of the hydrodynamic performance between the propeller and the aft twisted rudder with considering the interaction between them, and the results show that the twisted rudder can reduce the total resistance by reducing the pressure drag, improve the hydrodynamic performance of rudder and raise the efficiency of the propeller-rudder system. At the same time, some amendment was made in the design of twisted rudder. Through comparing the hydrodynamic performance between the two types of twisted rudder, the results show that the amendment rudder has a better matching charac-teristic with inflow, decreases the swing amplitude and solves the problem caused by the large ampli-tude vibration of rudder section.
出处
《船舶力学》
EI
CSCD
北大核心
2014年第3期238-247,共10页
Journal of Ship Mechanics
基金
Supported by the China Postdoctoral Science Foundation(Grant No.2012M512133)
the National Natural Science Foundation of China(Grant NO.41176074)
the Fundamental Research Funds for the Central University(Grant NO.T013513015)
关键词
扭曲舵
螺旋桨
面元法
最大舵阻力减额
水动力性能
twisted rudder
propeller
panel method
maximum reduction of rudder resistance
hydrodynamic performance
