船舶推进器低频宽带激励及其诱导声辐射的控制研究  

Control of low-frequency broadband excitation and induced sound radiation of ship thrusters

作　　者：熊紫英[1,2] 王磊 张国平[1,2] XIONG Zi−ying;WANG Lei;ZHANG Guo−ping(China Ship Scientific Research Center,Wuxi 214082,China;National Key Laboratory on Ship Vibration&Noise,Wuxi 214082,China)

机构地区：[1]中国船舶科学研究中心,江苏无锡214082 [2]船舶振动噪声重点实验室,江苏无锡214082

出　　处：《船舶力学》2025年第4期656-668,共13页Journal of Ship Mechanics

基　　金：国家自然科学基金资助项目(91852201);基础加强计划项目(2022-JCJQ-ZD-113-00)。

摘　　要：船舶推进器低频宽带激励及其声辐射的控制对其声隐身性能具有重要意义,本文对带前置定子的组合推进器低频宽带激励及其诱导的声辐射进行控制研究。从转子低频宽带激励理论预报模型出发,对转子宽带力受流场、几何以及工况等参数影响的规律进行系统的计算分析,提出转子宽带激励控制的三个方向:(1)改善湍流场,使之尽可能分布均匀;(2)改进转子几何设计,减小脉动载荷分量;(3)改进推进器各部件匹配设计,在相同的航速下降低转速。结合几方面研究成果,对组合推进器转子低频宽带力及其声辐射进行控制研究。研究结果显示,艇尾附体水动力外形优化、转子几何参数优选结合导管定子的增效设计,对转子低频宽带力及其声辐射的控制有一定效果,优化方案使转子低频宽带噪声峰值及积分值均下降3 dB左右。本研究可为船舶推进器低频宽带力及其诱导声辐射的控制提供一定参考价值。The control of low-frequency broadband excitation and acoustic radiation of ship thrusters is of great significance for the acoustic stealth performance of ship.The control of low-frequency broadband excitation and induced sound radiation in a combination thruster with a front stator was investigated in this paper.Starting from the theoretical prediction model of low-frequency broadband excitation for rotors,the influence of parameters such as flow field,geometry,and operating conditions on the broadband force of rotors was systematically calculated and analyzed.Three directions to control the broadband excitation of rotors were proposed:(1)improving the distribution of turbulent flow fields to make them as uniform as possible;(2)improving the geometric design of the rotor to reduce the pulsating load component;(3)improving the matching design of various components of the thruster and reducing the rotational speed at the same speed of ship.Based on several research achievements,control research was conducted on the lowfrequency broadband force and sound radiation of the rotor of a combined thruster.It is concluded that the optimization of the hydrodynamic shape of the stern appendage and the optimization of rotor geometric parameters combined with the efficiency enhancement design of the duct and stator can control the lowfrequency broadband force and sound radiation of the rotor to a certain degree,and that the optimization scheme reduces the peak and integral values of the low-frequency broadband noise of the rotor by about 3 dB.The research can provide certain reference for the control of low-frequency broadband force and induced sound radiation of ship thrusters.

关 键 词：船舶推进器 低频宽带激励 声辐射 控制 

分 类 号：TB53[理学—物理] U664.3[理学—声学]