摘要
水动力噪声是潜艇和水下航行体较大航速时的主要噪声源,在低Ma数情况下,它主要是湍流边界层脉动压力激励结构振动产生的辐射噪声。文章综述湍流边界层脉动压力的频率—波数谱模型、湍流脉动压力测量方法以及弹性结构受湍流脉动压力激励的外部区域场计算的研究进展。
Hydrodynamic noise is an important noise source of submarine and underwater vehicles when they are cruising at a high speed. Generally,when the Ma number is low, the hydrodynamic noise is mainly radiated by vibrating elastic structures excited by wall-pressure fluctuations beneath turbulent boundary layers （TBL）.In this paper, the progress of researching the frequency-wave number spectrum models and the measurement methods of wall-pressure fluctuations beneath TBL were chiefly introduced.And the calcula- tion of acoustic radiation of elastic structures excited by wall-pressure fluctuations beneath TBL is presented.
出处
《船舶力学》
EI
北大核心
2007年第1期152-158,共7页
Journal of Ship Mechanics
关键词
湍流边界层脉动压力
弹性结构
声辐射
频率-波数谱
pressure fluctuations beneath turbulent boundary lay
elastic structures
acoustic radiation
frequency-wave number spectrum
