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
• 负责人: AOKI Toshiyuki
• 金额: $ 1.47万
• 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: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07650211/
• 关键词: High Speed Train; Tunnel; Choking phenomenon; Pressure Transients; Compression Wave; Boundary Layr; Unsteady Flow; Pressure Wave; 波動干渉

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 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 pressue of the actuating chamber and the opening speed of a gate valve.3.The second 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.4.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 9 kPa, exists.5.The final project was carried out to investigate experimentally and numerically the pressure transients in the high-speed train/tunnel systems and the formation mechanism of pressure transients. The experimental data were compared with the numerical results by the characteristic method and TVD differential method.6.It was shown that the strength of the pressure transients are strongly dependent on the velocity of each train and the the formation mechanism of pressure transients is clarified.

1.第一个项目是开发一种带有快速开启闸阀的开放式激波管，而不是膜片。结果表明：闸阀的开度随动腔初始压力的增大而减小；压力的强度、最大压力上升速率和波前长度在很大程度上取决于执行腔的初始压力和闸阀的开启速度。二是对非定常边界层的转捩进行了实验研究。在弱激波下，将实验数据与理论结果进行了比较。在非定常边界层流动中，存在层流转湍流的过渡，描述了初始压缩波强度为9 kPa时的密度分布。最后，本课题对高速列车/隧道系统中的压力瞬变现象进行了实验和数值研究，并探讨了压力瞬变的形成机理。采用特征值法和TVD微分法对实验数据与数值结果进行了比较。结果表明，压力瞬变的强度与列车的速度密切相关，并阐明了压力瞬变的形成机制。

项目成果

MASHIMO,S., NAKATSU,E., AOKI,T., and MATSUO,K.: "Attenuation and Distortion of a Compression Wave Propagating in a High-Speed Railway Tunnel" Transactions of the Japan Society of mechanical Engineers. 62-597. 169-176 (1996)

MASHIMO,S.、NAKATSU,E.、AOKI,T. 和 MATSUO,K.：“高速铁路隧道中传播的压缩波的衰减和畸变”日本机械工程师学会会刊。

K.Matsuo: "Numerical study of attenuation and distortion of a compression wave propagating in a high-speed railway tunnel" Proc.of the 5th Int.Symp.on Computers and Railways. 2. 23-32 (1996)

K.Matsuo：“高速铁路隧道中传播的压缩波的衰减和畸变的数值研究”第五届计算机和铁路国际研讨会论文集。

AOKI,T., KONDOH,N., MATSUO,K., and MASHIMO,S.: "Transition of Unsteady Boundary Layr Induced by Propagating Compression Wave" Proc.of the 20th Int.Symp.on shock Waves. 1. 723-728 (1996)

AOKI,T.、KONDOH,N.、MATSUO,K. 和 MASHIMO,S.：“传播压缩波引起的不稳定边界层的转变”第 20 届 Int.Symp.on 冲击波论文集。

KASHIMURA,H., YASUNOBU,T., AOKI,T., and MATSUO,K.: "Emission of a Propagating Compression Wave from an Open End of a Tube" JSME International Journal B. 39-3. 475-481 (1996)

KASHIMURA,H.、YASUNOBU,T.、AOKI,T. 和 MATSUO,K.：“从管的开口端发射传播压缩波”JSME 国际期刊 B. 39-3。

眞下伸也: "高速鉄道トンネル内を伝ぱする圧縮波の減衰と変形" 日本機械学会論文集 B編. 62・596. 169-176 (1996)

Shinya Mashita：“高速铁路隧道中传播的压缩波的衰减和变形”日本机械工程学会会刊，卷 B. 62・596（1996 年）。