A Simple Scheme for Calculating Distortion of Compression Wave Propagating through a Tunnel with Slab Tracks
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 .
KeywordsSimple Scheme Compression Wave Tunnel Exit Slab Track Main Tunnel
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- 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.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.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
- 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.Chakravarthy, S.R., Osher, S.: A new class of high accuracy TVD schemes for hyperbolic conservation laws. AIAA Paper, 49-0363 (1985)Google Scholar
- 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.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