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Calculation grid and turbulence model for numerical simulating pressure fluctuations in high-speed train tunnel

高速列车过隧道压力波动数值模拟中的计算网格及湍流模型研究

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Abstract

Calculation grid and turbulence model for numerical simulating pressure fluctuations in a high-speed train tunnel are studied through the comparison analysis of numerical simulation and moving model test. Compared the waveforms and peak-peak values of pressure fluctuations between numerical simulation and moving model test, the structured grid and the SST k-ω turbulence model are selected for numerical simulating the process of high-speed train passing through the tunnel. The largest value of pressure wave amplitudes of numerical simulation and moving model test meet each other. And the locations of the largest value of the initial compression and expansion wave amplitude of numerical simulation are in agreement with that of moving model test. The calculated pressure at the measurement point fully conforms to the propagation law of compression and expansion waves in the tunnel.

摘要

通过动模试验和数值模拟的对比分析,研究了不同计算网格和湍流模型模拟高速列车通过隧道 时引起的压力瞬态。对比数值模拟和动模型试验得到的压力波动波形和最大峰峰值,选用了SST k-ω 湍流模型和结构化网格数值模拟高速列车通过隧道的过程。数值模拟与动模试验的最大压力波振幅值 相吻合。数值模拟的初始压缩波和膨胀波振幅最大的位置与动模试验的位置一致。测点的计算压力完 全符合隧道中压缩波和膨胀波的传播规律。

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Authors and Affiliations

  1. School of Traffic and Transportation Engineering, Central South University, Changsha, 410075, China

    Peng Ji  (姬鹏), Tian-tian Wang  (王田天) & Fan Wu  (伍钒)

  2. College of Mechanical and Vehicle Engineering, Hunan University, Changsha, 410082, China

    Tian-tian Wang  (王田天)

Authors
  1. Peng Ji  (姬鹏)
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  2. Tian-tian Wang  (王田天)
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  3. Fan Wu  (伍钒)
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Correspondence to Tian-tian Wang  (王田天).

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Ji, P., Wang, Tt. & Wu, F. Calculation grid and turbulence model for numerical simulating pressure fluctuations in high-speed train tunnel. J. Cent. South Univ. 26, 2870–2877 (2019). https://doi.org/10.1007/s11771-019-4220-6

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  • DOI: https://doi.org/10.1007/s11771-019-4220-6

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