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Influence of enlarged section parameters on pressure transients of high-speed train passing through a tunnel

局部扩大段参数对高速列车过隧道引起的压力波动的影响规律

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Abstract

The influence of enlarged section parameters on pressure transients of high-speed train passing through a tunnel was investigated by numerical simulation. The calculation results obtained by the structured and unstructured grid and the experimental results of smooth wall tunnel were verified. Numerical simulation studies were conducted on three tunnel enlarged section parameters, the enlarged section distribution along circumferential direction, the enlarged section area and the enlarged section distribution along tunnel length direction. The calculation results show that the influence of the different enlarged section distributions along tunnel circumferential direction on pressure transients in the tunnel is basically consistent. There is an optimal enlarged section area for the minimum value of the pressure variation amplitude and the average pressure variation in the tunnel. The law of the pressure variation amplitude and the average pressure variation of the enlarged section distribution along tunnel length direction are obtained.

摘要

数值模拟研究了局部扩大段参数对高速列车过隧道引起的压力波动的影响规律。对比验证了光 滑壁面隧道的实验数据和由结构及非结构网格计算获得的数值模拟结果。对三个局部扩大段参数进行 了数值模拟研究: 局部扩大段沿隧道周向分布、局部扩大段截面积和局部扩大段沿隧道长度方向分布。 数值模拟结果表明:局部扩大段沿各隧道周向位置分布的压力波动基本相同。存在一个最佳的局部扩 大段截面积使得压力变化幅值和平均压力差值为最小值。获得了压力变化幅值和平均压力差值随局部 扩大段沿隧道长度方向分布的变化规律。

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Authors and Affiliations

  1. National Laboratory for Computational Fluid Dynamics, School of Aeronautic Science and Engineering, Beihang University, Beijing, 100191, China

    Tian-tian Wang  (王田天) & Chun-hian Lee  (李椿萱)

  2. Key Laboratory of Traffic Safety on Track of Ministry of Education, School of Traffic and Transportation Engineering, Central South University, Changsha, 410075, China

    Ming-zhi Yang  (杨明智)

Authors
  1. Tian-tian Wang  (王田天)
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  2. Chun-hian Lee  (李椿萱)
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  3. Ming-zhi Yang  (杨明智)
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Corresponding author

Correspondence to Tian-tian Wang  (王田天).

Additional information

Foundation item: Project(2016YFB1200602-11) supported by National Key R & D Plan of China

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Wang, Tt., Lee, Ch. & Yang, Mz. Influence of enlarged section parameters on pressure transients of high-speed train passing through a tunnel. J. Cent. South Univ. 25, 2831–2840 (2018). https://doi.org/10.1007/s11771-018-3956-8

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  • DOI: https://doi.org/10.1007/s11771-018-3956-8

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