【作者】 张维鹏； 胡健； 陈崇格；

【Author】 ZHANG Wei-peng;HU Jian;CEHN Chong-ge;College of Shipbuilding Engineering,Harbin Engineering University;

【机构】 哈尔滨工程大学船舶工程学院；

【摘要】 在桨舵结合中,螺旋桨的尾流在到达舵附近时会发生偏移,造成舵两侧载荷分布发生偏移,这种现象会导致舵杆等连接部位产生剪切力,带来结构破坏。为了对这种偏移现象进行分析,使用k-ωSST方法对船-桨-舵结合下的舵两侧载荷的分布展开了研究,研究对象为KCS船和KP505螺旋桨。通过比较舵附近流场、舵表面螺旋桨尾涡致脉动压力的时域特征和频域特征来分析舵附近载荷分布的偏移现象。结果表明,受到尾涡偏移的影响,零攻角时舵上也存在法向力,同时具有螺旋桨轴方向上的扭矩,该扭矩在高进速时更小;尾涡的偏移还会引起舵两侧压力和脉动压力分布的不均衡。更多还原

【Abstract】 There is a spanwise dislocation of propeller wake in the propeller-rudder interaction,which will cause the load dislocation and shear force,even failure on the connector.To analyze the effect of this dislocation,k-ω SST method is used to study the load distribution on both sides of the rudder under the combination of hull-propeller-rudder.KCS ship and KP505 propeller are used for simulations.The dislocation of the load near the rudder is analyzed by comparing the flow field,time-domain and frequency-domain characteristics of propeller wake induced pressure fluctuations.The results show that there is normal force and torque in propeller axis direction on rudder at zero attack angle.The torque is smaller at high advance speed,and the dislocation of wake will also cause uneven distributions pressure and pressure fluctions on both sides of rudder.更多还原