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，研制了一种快开闸阀。模拟器中压力波的形成过程得到了较好的再现，并通过数值模拟和实验研究了多孔壁和空腔间距对超高频噪声的影响。本文对压力波在具有不同孔壁和孔洞的波动模拟器中传播时的衰减和畸变进行了数值分析，用本文方法计算的管中压力波波形，考虑了流体对管壁的摩擦力和有碴轨道的影响，与实验数据吻合较好，实验数据表明了本文方法的可行性，并明确了隔板和空腔间距的影响。找出了多孔板的最佳位置，阐明了管内隔板的作用。

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.