湍流边界层激励下板近场声辐射仿真分析

熊成杰; 侯刘奖; 周达仁; 金江明

文章摘要

熊成杰,侯刘奖,周达仁,金江明.湍流边界层激励下板近场声辐射仿真分析[J].高技术通讯(中文),2025,35(4):419~428

湍流边界层激励下板近场声辐射仿真分析

Simulation analysis of near-field acoustic radiation of plate excited by turbulent boundary layer

DOI：

中文关键词: 湍流边界层；结构声系统；声辐射；声振传递函数

英文关键词: turbulent boundary layer (TBL), vibro-acoustic system, acoustic radiation, vibro-acoustic transfer function

基金项目:

作者	单位
熊成杰	（浙江工业大学机械工程学院杭州 310014）
侯刘奖
周达仁
金江明

摘要点击次数: 6

全文下载次数: 3

中文摘要:

针对湍流边界层（turbulent boundary layer，TBL)激励下简支板的振动响应和近场声辐射问题，基于不相关平面波构建新的结构声系统传递函数进行了波数域建模和仿真分析研究。研究结果表明，根据激励、简支板和声场间的色散关系，系统响应分为对流波数作用区、结构波数作用区和空气波数作用区。对流波数作用区内TBL激励与简支板产生耦合作用，简支板向声场辐射大量的倏逝波；中间结构波数作用区内，两者耦合作用不明显，简支板向外辐射的倏逝波幅值较小。研究结果可视化了TBL激励下结构辐射声场，揭示了TBL激励下结构振动声辐射规律，具有重要的科学意义和工程应用价值。

英文摘要:

Aiming at the vibration response and near-field acoustic radiation of simply supported plate under turbulent boundary layer (TBL) excitation, the transfer function of structural acoustic system is constructed based on uncorrelated plane waves, and the wavenumber domain modeling and simulation analysis are carried out. The results show that the system response can be divided into convection wavenumber action region, structural wavenumber action region and air wavenumber action region according to the dispersion relationship among excitation, simply supported plate and sound field. TBL excitation and simply supported plate have coincidence effect in the convection wavenumber action zone, and simply supported plate radiates a large number of evanescent waves to the sound field; In the wavenumber action area of the intermediate structure, the coincidence effect between them is not obvious, and the evanescent amplitude of the simply supported plate is small. The research results visualize the sound field radiated by the structure under TBL excitation, and reveal the sound radiation law of structural vibration under TBL excitation, which has important scientific significance and engineering application value.

查看全文查看/发表评论下载PDF阅读器

关闭