摘要
随着理论计算方法的逐步完善以及计算资源的增强,对流动噪声进行理论数值分析已逐渐可行并成为深入了解声源传播途径、噪声产生机理及噪声声级预报的重要手段之一。对鱼雷的泵喷流场进行了计算,并对流场结构作了分析,然后采用Proudman理论计算了泵喷的宽带噪声,结果表明,主要噪声源区域与流场特征相一致,由此表明,流场的涡旋脉动是噪声产生的主要因素,在此基础上提出了控制泵喷流噪声的途径。
To understand the flow noise generation mechanism of pump jet propulsor, this paper calculates the flow field of a tor- pedo pump jet propulsor, analyzes the field structure, and then calculates its broadband noise with Proudman theory. The result shows that the major noise source zone is in conformity with the character of the flow field, indieating the eddy pulse of the flow field is the main factor of noise. Moreover, an approach to control the flow noise of the pump jet propulsor is offered.
出处
《鱼雷技术》
2009年第2期1-4,共4页
Torpedo Technology
基金
国防科技基金资助项目
关键词
鱼雷
泵喷射推进器
流噪声
流动干涉
宽带噪声
torpedo
pump jet propulsor
flow noise
flow interference
broadband noise
