Attenuation and distortion of a compression wave propagating in a high-speed railway tunnel

Sh Mashimo, E. Nakatsu, T. Aoki, K. Matsuo

研究成果: ジャーナルへの寄稿記事

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Compression waves generated by a high-speed train entering a tunnel were measured in three Shinkansen tunnels and the results were compared with the numerical values calculated using the TVD scheme. The strength of a compression wave is exponentially attenuated with distance as it propagates along the tunnel in both slab and ballast track tunnels, and the attenuation in the ballast track tunnel is considerably larger than that in the slab track tunnel. In the slab track tunnel, the compression wave is steepened as it propagates, while it spreads in the ballast track tunnel. The criterion for judgment whether the compression wave is steepened or spreads is expressed by the value of acoustic Reynolds number of about 10≈15.

元の言語英語
ページ(範囲)1847-1854
ページ数8
ジャーナルNippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
62
発行部数597
DOI
出版物ステータス出版済み - 1 1 1996

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All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanical Engineering

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