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Effect of ambient wind on pressure wave generated by high-speed train entering a tunnel

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Abstract

Using three-dimensional, unsteady N-S equations and k-ε turbulence model, the effect of ambient wind on the pressure wave generated by a high-speed train entering a tunnel was studied via numerical simulation. Pressure changes of the train surface and tunnel wall were obtained as well as the flow field around the train. Results show that when the train runs downwind, the pressure change is smaller than that generated when there is no wind. When the train runs upwind, the pressure change is larger. The pressure change is more sensitive in the upwind condition than in the downwind condition. Compared with no wind condition, when the wind velocity is 10 m/s and 30 m/s, the pressure amplitude on the train head is reduced by 2.8% and 10.5%, respectively. The wall pressure amplitude at 400 m away from the tunnel entrance is reduced by 2.4% and 13.5%, respectively. When the wind velocity is −10 m/s and −30 m/s, the pressure amplitude on the train head increases by 3.0% and 17.7%, respectively. The wall pressure amplitude at 400 m away from the tunnel entrance increases by 3.6% and 18.6%, respectively. The pressure waveform slightly changes under ambient wind due to the influence of ambient wind on the pressure wave propagation speed.

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Authors and Affiliations

  1. Key Laboratory of Traffic Safety on Track of Ministry of Education, Central South University, Changsha, 410075, China

    Xi-sai Zhou  (周细赛), Tang-hong Liu  (刘堂红), Zheng-wei Chen  (陈争卫), Xiang Zou  (邹翔) & Dong-run Liu  (刘东润)

  2. School of Traffic & Transportation Engineering, Central South University, Changsha, 410075, China

    Xi-sai Zhou  (周细赛), Tang-hong Liu  (刘堂红), Zheng-wei Chen  (陈争卫), Xiang Zou  (邹翔) & Dong-run Liu  (刘东润)

Authors
  1. Xi-sai Zhou  (周细赛)
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  2. Tang-hong Liu  (刘堂红)
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  3. Zheng-wei Chen  (陈争卫)
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  4. Xiang Zou  (邹翔)
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  5. Dong-run Liu  (刘东润)
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Corresponding author

Correspondence to Tang-hong Liu  (刘堂红).

Additional information

Foundation item: Projects(U1134203, 51575538)supported by the National Natural Science Foundation of China; Project(2014T001-A) supported by the Technological Research and Development Program of China Railways Corporation; Project(2015ZZTS210) supported by the Fundamental Research Funds for the Central South Universities of China

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Zhou, Xs., Liu, Th., Chen, Zw. et al. Effect of ambient wind on pressure wave generated by high-speed train entering a tunnel. J. Cent. South Univ. 24, 1465–1475 (2017). https://doi.org/10.1007/s11771-017-3550-5

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  • DOI: https://doi.org/10.1007/s11771-017-3550-5

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