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中南大学学报(英文版)

Journal of Central South University

Vol. 26    No. 10    October 2019

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Calculation grid and turbulence model for numerical simulating pressure fluctuations in high-speed train tunnel
JI Peng(姬鹏)1, WANG Tian-tian(王田天)1, 2, WU Fan(伍钒)1

1. School of Traffic and Transportation Engineering, Central South University, Changsha 410075, China;
2. College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, China

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.

 

Key words: high-speed train; calculation grid; turbulence model; tunnel; pressure fluctuations

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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