Study of Aerodynamic Noise induced by Shock Waves in Supersonic Flows and Development of a Method for Reducing the Noise
超音速流中冲击波引起的气动噪声研究及降噪方法的开发
基本信息
- 批准号:11650177
- 负责人:
- 金额:$ 2.37万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (C)
- 财政年份:1999
- 资助国家:日本
- 起止时间:1999 至 2000
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
1. To accomplish the railway tunnel simulator, a fast opening gate valve was developed. we analyzed the performance of the fast opening gate valve by using a super high-speed video camera. The results show that the opening time of the gate valve decreases when the initial pressure in the actuating chamber increases. And the relation between the initial pressure in the actuating chamber and the characteristics of the compression wave such as the maximum pressure gradient was made clear.2. To study the ballast effect on distortion of pressure wave propagating in high-speed railway tunnel, we made a high-speed railway tunnel simulator using a fast opening gate valve. An experimental investigation was carried out to clarify the distortion of a propagating compression wave in a model tunnel with various porous material wall. Experimental data shows the possibility of the present alleviative method, and the effects of the porous material wall is clear.3. The compression waveform in the propagating process are studied numerically by second-order symmetric TVD method scheme, taking both fluid friction on the flat wall and the effect of the ballasted track into consideration. The waveform of the compression wave in the tunnel calculated by the present two-layer method is in good agreement with that of the field test data on both track tunnels, so that the present numerical method of calculation seems to be reasonable.
1.为实现铁路隧道模拟器,研制了一种快开闸阀。利用超高速摄像机对快开闸阀的性能进行了分析。结果表明,闸阀的开启时间随工作腔初始压力的增大而减小。明确了作动室初始压力与压缩波特性如最大压力梯度之间的关系.为研究高速铁路隧道中道碴对压力波传播畸变的影响,制作了一个带快开闸阀的高速铁路隧道模拟器。通过实验研究了不同多孔材料壁面对压缩波传播的影响。实验数据表明了该方法的可行性,多孔材料壁面的影响是明显的.采用二阶对称TVD方法,考虑了平壁面上的流体摩擦和有碴轨道的影响,对轨道传播过程中的压缩波形进行了数值研究。用本文的两层法计算的隧道内压缩波波形与两条轨道隧道的实测数据吻合较好,说明本文的数值计算方法是合理的。
项目成果
期刊论文数量(15)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
T.Aoki,K.Matsuo: "Impuse sound emitted from high-speed raiway tunnel exit"Proc.6th AIAA/CEAS Aeroacoustics Conference. 1. 1-6 (2000)
T.Aoki,K.Matsuo:“高速铁路隧道出口发出的冲击声”Proc.6th AIAA/CEAS 气动声学会议。
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
青木俊之 他2名: "管開口端からの圧力波の放出により発生するパルス音"可視化情報. 20・s1. 447-450 (2000)
Toshiyuki Aoki 等 2 人:“管道开口端释放压力波产生的脉冲声”20・s1(2000)。
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
Toshiyuki Aoki, et.al.: "Impulsive Sound Caused by Discharging Pressure Wave from an Open End of a Tube"Journal of the Visualization Society of Japan. 20-s1. 447-450 (2000)
Toshiyuki Aoki 等人:“从管的开口端释放压力波引起的脉冲声音”日本可视化学会杂志。
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
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仲尾晋一郎,ほか4名: "トンネル波動シミュレーター用急速開口弁の試作と性能"可視化情報. 19・S2. 263-266 (1999)
Shinichiro Nakao 等 4 人:“隧道波模拟器快速开启阀的原型和性能” 可视化信息。
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
Kazuyasu Matsuo and Toshiyuki Aoki: "Low Frequency Sound Generated from Shinkansen Railway Tunnels"Journal of INCE/J. 23-5. 339-343 (1999)
Kazuyasu Matsuo 和 Toshiyuki Aoki:“新干线铁路隧道产生的低频声音”INCE/J 杂志。
- DOI:
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- 影响因子:0
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AOKI Toshiyuki其他文献
AOKI Toshiyuki的其他文献
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{{ truncateString('AOKI Toshiyuki', 18)}}的其他基金
Research on the disappearance phenomenon of forming shock wave in the non-linear propagation of compression wave in the long tube
压缩波在长管内非线性传播中形成激波消失现象的研究
- 批准号:
24560199 - 财政年份:2012
- 资助金额:
$ 2.37万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Research on the transition phenomena of the attenuation with distance on pressure wave propagating in the long tube
压力波在长管内传播随距离衰减过渡现象研究
- 批准号:
21560178 - 财政年份:2009
- 资助金额:
$ 2.37万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
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 - 财政年份:2004
- 资助金额:
$ 2.37万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Alleviation of Super Low Frequency Noise Generated by a High-speed Train Passing thorough a Tunnel
高速列车通过隧道时产生的超低频噪声的缓解
- 批准号:
13650184 - 财政年份:2001
- 资助金额:
$ 2.37万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Passive Control of Micro-Pressure Wave from High-Speed Railway Tunnel
高铁隧道微压力波的被动控制
- 批准号:
09650193 - 财政年份:1997
- 资助金额:
$ 2.37万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Study of Aerodynamic Drag/Pressure Transients Induced by High-Speed Train Passing in a Tunnel
高速列车通过隧道引起的气动阻力/压力瞬变研究
- 批准号:
07650211 - 财政年份:1995
- 资助金额:
$ 2.37万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Study of Transition in Unsteady Boundary Layr induced by Propagating Compression Wave Using Laser Differential Interferometry
激光微分干涉法研究压缩波传播引起的非定常边界层转变
- 批准号:
05650166 - 财政年份:1993
- 资助金额:
$ 2.37万 - 项目类别:
Grant-in-Aid for General Scientific Research (C)
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