Entry Compression Wave Generated by a High-Speed Train Entering a Tunnel.

Shinya Mashimo; Eiji Nakatsu; Toshiyuki Aoki; Kazuyasu Matsuo

doi:10.1299/kikaib.61.3720

Entry Compression Wave Generated by a High-Speed Train Entering a Tunnel.

Shinya Mashimo, Eiji Nakatsu, Toshiyuki Aoki, Kazuyasu Matsuo

Thermo Fluid Dynamics Division

Research output: Contribution to journal › Article

3 Citations (Scopus)

Abstract

A high-speed train entering a tunnel generates a compression wave ahead of it. The wave is propagated through the tunnel and causes an impulsive noise when it arrives at the tunnel exit. The magnitude of impulsive noise from the tunnel exit is proportional to the maximum time rate of pressure change of the compression wave reaching the exit, according to the aeroacoustic theory. From this point of view, it is important to clarify the formation mechanism and the waveform of the compression wave generated at the entrance of the tunnel. In this paper, the entry compression waves are measured in actual high-speed train/tunnel systems and the results are compared with the theoretical values. Then the formation mechanism of the entry compression waves is clarified.

Original language	English
Pages (from-to)	3720-3727
Number of pages	8
Journal	Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume	61
Issue number	590
DOIs	https://doi.org/10.1299/kikaib.61.3720
Publication status	Published - Jan 1 1995

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All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Mechanical Engineering

Cite this

Mashimo, S., Nakatsu, E., Aoki, T., & Matsuo, K. (1995). Entry Compression Wave Generated by a High-Speed Train Entering a Tunnel. Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B, 61(590), 3720-3727. https://doi.org/10.1299/kikaib.61.3720

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10.1299/kikaib.61.3720