Advertisement

A Simple Scheme for Calculating Distortion of Compression Wave Propagating through a Tunnel with Slab Tracks

  • T. Miyachi
  • S. Ozawa
  • T. Fukuda
  • M. Iida
  • T. Arai
Conference paper

Introduction

A high-speed train entering a tunnel generates a compression wave that propagates through toward its exit.When the compression wave reaches the tunnel exit, a pressure pulse (“micro-pressure wave” [1, 2]) is radiated from the exit portal, and it causes an environmental problem. The magnitude of the micro-pressure wave is approximately proportional to the maximum pressure gradient ∂ p/ ∂ t max (p: acoustic pressure, t: time) of the compression wave arriving at the tunnel exit [1].

Keywords

Simple Scheme Compression Wave Tunnel Exit Slab Track Main Tunnel 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Yamamoto, A.: Micro-pressure wave Radiated from Tunnel Exit. Preprint of Spring Meeting of Physical Society of Japan (1977) (in Japanese)Google Scholar
  2. 2.
    Ozawa, S.: Studies of Micro-Pressure Wave Radiated from a Tunnel Exit. Railway Technical Research Report, Japanese National Railways, 1121 (1979) (in Japanese)Google Scholar
  3. 3.
    Ozawa, S., Maeda, T., Matsumura, T., Nakatani, K., Uchida, K.: Distortion of compression wave during propagation along Shinkansen tunnel. In: 8th International Symposium on Aerodynamics and Ventilation of Vehicle Tunnels, pp. 211–226, BHR Group (1994)Google Scholar
  4. 4.
    Fukuda, T., Ozawa, S., Iida, M., Takasaki, T., Wakabayashi, Y.: Distortion of compression wave propagating through very long tunnel with slab-trucks. JSME International Journal B 49(4), 1156–1164 (2006)CrossRefGoogle Scholar
  5. 5.
    Aoki, T., Nakao, S., Matsuo, K., Kashimura, H., Yasunobu, T.: Attenuation and distortion of compression and shock waves propagating along high-speed railway tunnels. In: 21st International Symposium on Shock Waves, p. 1140 (1997)Google Scholar
  6. 6.
    Chakravarthy, S.R., Osher, S.: A new class of high accuracy TVD schemes for hyperbolic conservation laws. AIAA Paper, 49-0363 (1985)Google Scholar
  7. 7.
    Vardy, A., Brown, J.: Transient, turbulent, smooth pipe friction. Journal of Hydraulic Research 33, 4 (1995)CrossRefGoogle Scholar
  8. 8.
    Hartunian, R.A., Russo, A.L., Marrone, P.V.: Boundary-Layer Transition and Heat Transfer in Shock Tubes. Journal of the Aerospace Sciences 27, 8 (1960)Google Scholar
  9. 9.
    Vardy, A., Brown, J.: An overview of wave propagation in tunnels. In: TRANSAERO - A European Initiative on Transient Aerodynamics for Railway System Optimisation. Notes on Numerical Fluid Mechanics, vol. 79, pp. 249–266. Springer (2002)Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • T. Miyachi
    • 1
  • S. Ozawa
    • 1
  • T. Fukuda
    • 1
  • M. Iida
    • 2
  • T. Arai
    • 3
  1. 1.Railway Technical Research InstituteTokyoJapan
  2. 2.Tokyo University of TechnologyTokyoJapan
  3. 3.Osaka Prefecture UniversitySakaiJapan

Personalised recommendations