期刊文献+

湍流边界层激励下平板辐射噪声数值计算方法 被引量:3

Numerical method for calculating sound radiation characteristics of plate structure excited by turbulent boundary layer
下载PDF
导出
摘要 [目的]湍流边界层(TBL)激励下的结构辐射噪声(也称"流激噪声")是水下航行体的重要噪声源,因此,对流激噪声数值计算方法的研究具有重要意义。[方法]基于LMS Virtual Lab数值计算软件,以Corcos湍流脉动压力频率波数模型作为输入,采用主成分分析(PCA)法和振动—声传递向量(VATV)法计算湍流边界层激励下平板结构的流激噪声,并对两种方法的正确性进行验证,比较分析两种方法的计算时间及得到的声压自功率谱密度(ASD)曲线。[结果]结果表明,这两种方法均可有效计算湍流边界层激励下的结构流激噪声,且计算结果基本一致;和PCA法相比,VATV法所占用的计算资源更少,能快速预报结构的流激噪声;相较于VATV法,PCA法还可以得到结构振动响应结果。[结论]该研究结果对水下结构流激噪声快速预报具有一定的参考价值。 As the turbulent boundary layer(TBL)is one of the most important sources of vibration and noise in underwater vehicles,there is an important significance in studying the numerical method for the calculation of flow-induced noise.In this paper,the methods of Principal Component Analysis(PCA)and Vibro-Acoustic Transfer Vectors(VATV)based on LMS Virtual Lab software are used to calculate the sound characteristics of a plate structure excited by TBL.The Corcos model of the wave number-frequency spectrum of the wall pressure field beneath the TBL is used to describe random excitation.By comparing the calculating time and sound pressure auto power spectra curves of the two methods,the following conclusions are obtained:both the VATV method and PCA method can be used effectively for the calculation of the flow-induced noise of structures excited by the TBL,and the results of the two methods match;the VATV method can quickly forecast the structure of flow-induced noise and takes up fewer computing resources than the PCA method;the PCA method can also obtain the structure vibration response in comparison with the VATV method.The current work can serve as a reference for the rapid prediction of the flow-induced noise of underwater structures.
作者 李祖荟 陈美霞 LI Zuhui;CHEN Meixia(School of Naval Architecture and Ocean Engineering,Huazhong University of Science and Technology,Wuhan 430074,China)
出处 《中国舰船研究》 CSCD 北大核心 2017年第4期76-82,共7页 Chinese Journal of Ship Research
关键词 湍流边界层 流激噪声 主成分分析 振动-声传递向量 Turbulent Boundary Layer(TBL) flow-induced noise Principal Component Analysis (PCA) Vibro-Acoustic Transfer Vectors(VATV)
  • 相关文献

参考文献3

二级参考文献31

  • 1俞孟萨,吴有生,庞业珍.国外舰船水动力噪声研究进展概述[J].船舶力学,2007,11(1):152-158. 被引量:37
  • 2吕世金,俞孟萨,李东升.水下航行体水动力辐射噪声预报方法研究[J].水动力学研究与进展(A辑),2007,22(4):475-482. 被引量:16
  • 3Strawderman W A. Turbulence induced plate vibrations: an evaluation of finite and infinite plate models [J]. J Acoust. Soc. Am. 1969,46(5) : 1 294-1 307.
  • 4Strawderman W A,Christman R A. Turbulence induced plate vibration: some effects of fluid loading on finite and infinite plates [J]. J Acoust. Soc. Am, 1972, 52(2):1 537-1 552.
  • 5Durant C, Robert G, Filippi P J, et al. Vibroacoustic response of a thin cylindrical shell excited by a turbulent internal flow: comparison between numerical prediction and experimentation[J]. J. Sound and Vibration,1999,229(5):1115-1 155.
  • 6吕世金,白振国,庞业珍.湍流脉动压力激励无限大加肋平板振动声辐射研究[A].第十二阶船舶水下噪声学术讨论会[C].长沙:中国造船工程学会.2009.199-205.
  • 7何祚镛.结构振动及声辐射[M].哈尔滨:哈尔滨工程大学出版社,2001.
  • 8Corcos G M. The resoiution of turbulent pressure at the wall of a boundary layer[J]. J Sound and Vibration, 1967,6(1) : 59-70.
  • 9Skudrzyk E J,Haddle G P. Noise production in a turbulent boundary layer by smooth and rough surfaces [J]. J. Acoust. Soc. ,1960,32,19-34.
  • 10Sysnoise Rev5.6 User Manual. LMS. international.

共引文献31

同被引文献16

引证文献3

二级引证文献8

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部