摘要
为研究新型的舵前轮缘泵喷推进器的减振降噪效果,采用结构化网格和基于SST k-ω模型的DES模型,对舵前轮缘泵喷推进器的非定常水动力进行了计算,总结了该新型推进器的轴承力特性。先通过采用不同的边界层厚度和网格数量进行计算,总结得到了合适的数值计算方法。再通过分析舵对常规泵喷推进器的转子盘面流场和转子轴承力的影响,证明了舵的存在会增大常规泵喷推进器转子盘面流场的不均匀性和转子轴承力的幅值。最后计算了不同定子布置方式和转子叶数的舵前轮缘泵喷推进器的轴承力,结果表明该新型泵喷推进器能够有效减小轴承力。该研究结果可为进一步降低推进器的噪声提供技术支持。
In order to study the effect of vibration and noise reduction on a new type of rim driving′s pump-jet propeller placed in front of the rudder,structure grids and SST k-ωDES turbulence model are used to calculate the unsteady hydrodynamic performance of rim driving’s pump-jet propeller placed in front of the rudder,which summarized the bearing force characteristics of the new thruster.Firstly,different boundary layer thickness and number of grids are used to calculate,and a suitable numerical calculation method is summarized.Secondly,based on the analysis of the influence of rudder on the flow field of rotor disc and the bearing force of rotor,it is proved that the existence of rudder will increase the inhomogeneity of the rotor disc flow field and the amplitude of rotor bearing force of conventional pump-jet propeller.Finally,the bearing forces of rim driving′s pump-jet propellers placed in front of the rudder with different stator arrangement and number of rotor blades is calculated.The results show that the new type of pump-jet propeller can effectively reduce the bearing force.The research results can provide technical support for further reducing the noise of propeller.
作者
王运韬
叶金铭
WANG Yun-tao;YE Jin-ming(College of Naval Architecture,Naval University of Engineering,Wuhan 430033,China)
出处
《舰船科学技术》
北大核心
2022年第2期53-58,共6页
Ship Science and Technology
基金
国家自然科学基金资助项目(51579243)。
关键词
舵前轮缘泵喷推进器
非定常
转子盘面流场
轴承力
噪声
rim driving′s pump-jet propeller placed in front of the rudder
unsteady
the flow field of rotor disc
bearing force
noise
