New alleviation method of low frequency noise from a high-speed train tunnel with a porous and elastic plates

多孔弹性板缓解高速列车隧道低频噪声的新方法

• 批准号: 16560149
• 负责人: AOKI Toshiyuki
• 金额: $ 2.37万
• 依托单位: KYUSHU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2004
• 资助国家: 日本
• 起止时间: 2004 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-16560149/
• 关键词: Tunnel noise; High speed train; Low frequency sound; Noise alleviation; Ballasted track; Pressure wave; Muffler; Micro pressure wave

To accomplish the wave simulator, a fast opening gate valve was developed. The formation of the pressure wave in a simulator are reproduced with a good quality.The effects of porous wall and cavity space for super frequency noise are investigated numerically and experimentally. The numerical analysis was developed on the attenuation and distortion of a pressure wave propagating in a wave simulator with various porous wall and cavity.The waveform of the pressure wave in the tube calculated by the present method, taking both fluid friction on the wall and the effect of the ballasted track into account, is in good agreement with the experimental data, so that the present numerical method of calculation seems to be reasonable.Experimental data shows the possibility of the present alleviative method, and the effects of the partition plates and cavity space are clear. Optimum location of porous plate are found and the effect of patition plate in a tube have been clarifed.

为了实现波浪模拟器，研制了一种快速开启闸阀。用数值和实验的方法研究了多孔壁和腔体间距对超高频噪声的影响。对压力波在具有不同孔壁和孔洞的波浪模拟器中传播的衰减和变形进行了数值分析。用该方法计算的管内压力波波形，既考虑了壁面上的流体摩擦，又考虑了道碴轨道的影响，与实验结果吻合较好，表明本文的数值计算方法是合理的。实验数据表明，本文提出的缓解方法是可行的，隔板和空腔空间的影响是明显的。找出了多孔板的最佳位置，阐明了配料板在管内的作用。

项目成果

多孔板を用いたトンネル微気圧波の低減に関する研究

穿孔板消减隧道微压力波的研究

• 发表时间: 2004
• 期刊: 日本機械学会2004年度次大会講演論文集 2
• 作者: 青木俊之;他3名
• 通讯作者: 他3名

Study on the atenuation of micro pressure wave by a porous plate in tunnel

隧道内多孔板对微压力波的衰减研究

• 发表时间: 2004
• 期刊: Proc.Mechanical Engineerin Congress MECJ-04
• 作者: Toshiyuki AOKI;et al.
• 通讯作者: et al.

Passive control of propagating pressure wave in a tube with an elastic wall

弹性壁管内压力波传播的被动控制

• 发表时间: 2004
• 期刊: Proc.Fluids Engineering Congress JSME 420(CD-ROM)
• 作者: Toshiyuki AOKI;et al.
• 通讯作者: et al.

さまざまな管壁構造を持つ管内を伝播する圧縮波の特性に関する研究

压缩波在不同壁结构管道中传播特性研究

• 发表时间: 2006
• 期刊: 2005年度衝撃波シンポジウム講演論文集 1
• 作者: 青木俊之;他3名
• 通讯作者: 他3名

Characteristics of propagating compression wave ina tube with various wall stractures

压缩波在不同壁结构管内的传播特性

• 发表时间: 2006
• 期刊: Proc.Sym.on Shock Wave in Japan
• 作者: Toshiyuki AOKI;et al.
• 通讯作者: et al.