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
基本信息
- 批准号:05650166
- 负责人:
- 金额:$ 1.6万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for General Scientific Research (C)
- 财政年份:1993
- 资助国家:日本
- 起止时间:1993 至 1994
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
1. The first project was carried out to develop an open-ended shock tube with a fast opening gate valve instead of a diaphragm. The results show that the opening time of a gate valve decreases with an increasing the initial pressure of the actuating chamber.2. The strength, maximum rate of pressure rise and length of wavefront are strongly dependent on the initial pressure of the actuating chamber and the opening speed of a gate valve.3. The second project was carried out to develop a laser differential interferometry method using Wollaston prisms. The sensitivity was sufficiently high to record the density variations by compression waves.4. The measurements of the time-dependent profiles gave detailed information on the process of formation of the unsteady boundary layr induced by propagating compression wave in a constant-area duct.5. The third project was carried out to investigate experimentally and numerically the attenuation of a compression wave. The experimental data were compared with the numerical results by TVD scheme, which takes into account a fluid friction for a transient duct flow.6. It was shown that the attenuation and distortion rates are strongly dependent on a fluid friction term for unsteady laminar or turbulent flow.7. The final project was carried out to investigate experimentally the transition of unsteady boundary layr. The experimental data were compared with the theoretical results for a weak shock wave.8. It was found that the laminar-to-turbulent transition in unsteady boundary layr flow, which describes the density profiles at strength of the initial compression wave from 9kPa, exists.
1.第一个项目是开发一种用快开闸阀代替膜片的开口式激波管。结果表明,闸阀的开启时间随驱动腔初始压力的增大而减小.波前的强度、最大压力上升速率和长度与驱动腔的初始压力和闸阀的开启速度密切相关.第二个项目是利用沃拉斯顿棱镜开发激光差分干涉测量法。灵敏度高,可以记录压缩波引起的密度变化.随时间变化的剖面测量给出了等截面管道中传播压缩波引起的非定常边界层形成过程的详细信息.第三个项目是对压缩波的衰减进行实验和数值研究。将实验数据与TVD格式的数值计算结果进行了比较,TVD格式考虑了管道瞬态流动的流体摩擦.结果表明,对于非定常层流或湍流,衰减率和畸变率强烈依赖于流体摩擦项.最后一个项目是对非定常边界层转捩进行实验研究。对弱激波的实验数据与理论计算结果进行了比较.结果表明,在非定常边界层流动中,存在着描述初始压缩波强度从9kPa开始的密度分布的层流到湍流的转变。
项目成果
期刊论文数量(12)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
青木俊之: "高速鉄道トンネル波動シミュレーターの試作とその性能" 九州大学大学院総合理工学研究科報告. 15. 299-303 (1993)
青木敏之:“高速铁路隧道波模拟器的原型及其性能”九州大学研究生院理工学报告15. 299-303(1993)。
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AOKI,T., MASHIMO,S., KONDOH,N.and MATSUO,K.: "Investigation of Unsteady Boundary Layr Induced by Propagating Compression Wave (1st Report, Experiment Using Laser Differential Interferometry)" Transactions of the Japan Society of Mechanical Engineers. 60-5
AOKI,T.、MASHIMO,S.、KONDOH,N. 和 MATSUO,K.:“传播压缩波引起的不稳定边界层的研究(第 1 份报告,使用激光微分干涉测量法的实验)” 日本机械工程学会会刊
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青木俊之: "圧縮波により誘起される非定常境界層に関する研究(第1報、レーザ差動干渉法を用いた実験)" 日本機械学会論文集 B編. 60. 2287-2292 (1994)
Toshiyuki Aoki:“压缩波引起的不稳定边界层的研究(首次报告,使用激光微分干涉测量法的实验)”日本机械工程学会会刊,卷 B.60.2287-2292(1994 年)
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AOKI,T., MASHIMO,S., KONDOH,N., KAWAHATA,S.and MATSUO,K.: "Performance of Wave Simulator for High-Speed Railway Tunnel" Engineering Sciences Reports, Kyushu University. 15-3. 299-303 (1993)
AOKI,T.、MASHIMO,S.、KONDOH,N.、KAWAHATA,S. 和 MATSUO,K.:“高速铁路隧道波动模拟器的性能”工程科学报告,九州大学。
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- 影响因子:0
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青木俊之: "圧縮波により誘起される非定常境界層に関する研究(第1報,レーザ差動干渉法を用いた実験)" 日本機械学会論文集 B編. 60. 2287-2292 (1994)
Toshiyuki Aoki:“压缩波引起的不稳定边界层的研究(第 1 部分,使用激光微分干涉测量的实验)” 日本机械工程学会会刊,卷 B.60.2287-2292(1994 年)
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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:
$ 1.6万 - 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:
$ 1.6万 - 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:
$ 1.6万 - 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:
$ 1.6万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
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
- 批准号:
11650177 - 财政年份:1999
- 资助金额:
$ 1.6万 - 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:
$ 1.6万 - 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:
$ 1.6万 - 项目类别:
Grant-in-Aid for Scientific Research (C)