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-ω DES 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.
2022,44(2): 53-58 收稿日期：2020-08-09
DOI：10.3404/j.issn.1672-7649.2022.02.011
分类号：U661.4
基金项目：国家自然科学基金资助项目（51579243）
作者简介：王运韬(1995-)，男，硕士研究生，主要从事舰船流体力学研究
参考文献：
[1] 刘占一, 宋保维, 黄桥高, 等. 基于CFD技术的泵喷推进器水动力性能仿真方法[J]. 西北工业大学学报, 2010, 28(5): 724–729
LIU Zhan-yi, SONG Bao-wei, HUANG Qiao-gao, HU Hai-bao. Applying CFD technique to calculating successfully hydrody- namic performance of water jet pump[J]. Journal of Northwestern Polytechnical University, 2010, 28(5): 724–729
[2] 胡欲立, 刘文峰. 基于 FLUENT 的泵喷射推进器内流场仿真[J]. 机械与电子, 2009(11): 27–30
[3] AHN S J, KWON O J. Numerical investigation of cavitating flows for marine propulsors using an unstructured mesh technique[J]. International Journal of Heat and Fluid Flow, 2013, 43(5): 259–267
[4] AHN S J, KWON O J. Numerical investigation of a pump-jet with ring rotor using an unstructured mesh technique[J]. Journal of Mechanical Science and Technology, 2015, 29(7): 2897–2904
[5] 卢丁丁, 付建. 泵喷推进器导管对转子声场的影响[J]. 鱼雷技术, 2016, 24(6): 407–411
[6] 夏琨. 轮缘式泵喷推进器的水动力性能分析[D]. 哈尔滨: 哈尔滨工程大学, 2017.
[7] 张凯, 叶金铭, 于安斌. 基于分块结构网格的泵喷推进器敞水性能模拟[J]. 船舶工程, 2018, 40(11): 49–54
[8] 张凯. 基于导管凹槽结构泵喷推进器梢部流动控制研究[D]. 武汉: 海军工程大学, 2018.
ZHANG Kai. Study on the flow control of pump-jet propeller with casing treatment[D]. Wuhan : Navel University of Engineering, 2018.
