Impulse sound emitted from high-speed railway tunnel exit

Toshiyuki Aoki, Kazuyasu Matsuo

研究成果: 会議への寄与タイプ学会誌査読

3 被引用数 (Scopus)


When a high-speed railway train enters a tunnel, a compression wave is generated ahead of the train and propagates along the tunnel. This wave subsequently emerges from the exit portal of the tunnel as an impulse sound which may cause noise problems in the surrounding area. The present paper analyzes the reflection process of a propagating compression wave from a tunnel exit and the generation mechanism of an impulse sound emitted from the tunnel exit. The experimental analysis is carried out on the discharge of a compression wave from an open end of a tube, which has an infinite baffle plate at the end. The magnitude of a generated impulse sound obtained by experiments are compared with the results by the aeroa- coustic analysis with the proposed open end correction. The relation between the compression wave inside the tunnel and an impulse sound outside is made clear theoretically and experimentally.

出版ステータス出版済み - 12月 1 2000
イベント6th Aeroacoustics Conference and Exhibit, 2000 - Lahaina, HI, 米国
継続期間: 6月 12 20006月 14 2000


その他6th Aeroacoustics Conference and Exhibit, 2000
CityLahaina, HI

!!!All Science Journal Classification (ASJC) codes

  • 航空宇宙工学
  • 電子工学および電気工学
  • 機械工学
  • 音響学および超音波学


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