Theoretical Calculation Study on Unsteady Flow of Piston Wind in Double-Shaft Railway Tunnel

被引：0
|
作者：
Yan X. [1 ,2 ,3 ]
Zeng Y. [1 ,2 ]
Yang G. [1 ,2 ]
Zhao D. [1 ,2 ]
Tu Y. [1 ,2 ]
机构：
[1] School of Civil Engineering, Southwest Jiaotong University, Sichuan, Chengdu
[2] Key Laboratory of Transportation Tunnel Engineering, Ministry of Education, Southwest Jiaotong University, Sichuan, Chengdu
[3] School of Civil Engineering, Chongqing Jiaotong University, Chongqing
来源：
Zhongguo Tiedao Kexue/China Railway Science | 2023年 / 44卷 / 04期
关键词：
Double-shaft tunnel; Piston wind; Railway tunnel; Theoretical calculation; Unsteady flow;
D O I：
10.3969/j.issn.1001-4632.2023.04.12
中图分类号：
学科分类号：
摘要：
To address the inadequacy of theoretical calculation study on piston wind under the influence of existing shafts, a theoretical calculation model of piston wind unsteady flow in a double-shaft railway tunnel is established based on the continuity equation and Bernoulli's equation. The whole process of train running in a double-shaft railway tunnel is divided into four stages, and the theoretical calculation equation of piston wind unsteady flow in the tunnel for each stage is derived respectively. Through model test and numerical simulation, the reliability of the theoretical equation is verified and corrected. The results show that the wind flow relationship between the tunnel and the shaft changes dynamically with the variation of the relative position of the moving train and the shaft, which will cause large errors if the calculation is based on fixed values. The numerical simulation method can inversely derive the dynamic relationship of the wind flow to correct the theoretical calculation equation. The corrected theoretical calculation equation has high accuracy with the overall error less than 10% and the applicable train speed range of 0-360 km/h. The theoretical equation can not only calculate the piston wind speed of railway or subway tunnels with similar structures, but also can be applied to single shaft or multi-shaft (more than 3) tunnels. © 2023 Chinese Academy of Railway Sciences. All rights reserved.
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页码：121 / 132
页数：11
相关论文
共 21 条
  • [1] ZENG Yanhua, BAI Yun, ZHOU Xiaohan, Et al., Numerical Simulation Analysis of Piston Wind Change during Train Stopping at Rescue Station in Railway Tunnel［J］, China Railway Science, 37, 4, pp. 128-133, (2016)
  • [2] YAN X N, PENG J Q，, Et al., Behavior of Piston Wind Induced by Braking Train in a Tunnel［J］, Energies, 13, 23, (2020)
  • [3] SHIN C H, PARK W G., Numerical Study of Flow Characteristics of the High Speed Train Entering into a Tunnel［J］, Mechanics Research Communications, 30, 4, pp. 287-296, (2003)
  • [4] GILBERT T, BAKER C J，, QUINN A., Gusts Caused by High-Speed Trains in Confined Spaces and Tunnels［J］, Journal of Wind Engineering and Industrial Aerodynamics, 121, pp. 39-48, (2013)
  • [5] INGHAM D，, Et al., A Validated Numerical Investigation of the Effects of High Blockage Ratio and Train and Tunnel Length upon Underground Railway Aerodynamics［J］, Journal of Wind Engineering and Industrial Aerodynamics, 146, pp. 195-206, (2015)
  • [6] 3-D Numerical Analysis of Train-Induced Flow inside Four Ventilated Underground Subway Stations and Connecting Tunnels ［J］, Journal of Wind Engineering and Industrial Aerodynamics, 193, (2019)
  • [7] BAO Haitao, Numerical Simulation of Piston Wind Induced by Subway Train［D］, (2005)
  • [8] ZHU Fu, YU Zhixiang, CAO Ruizhou, Et al., Time Variant Characteristics of Piston Wind for Billboards Affiliated with Subway Tunnels［J］, Journal of Southwest Jiaotong University, 53, 5, pp. 1048-1057, (2018)
  • [9] SOPER D，, Et al., Numerical Simulations of the Separated Flow around a Freight Train Passing through a Tunnel Using the Sliding Mesh Technique［J］, Proceedings of the Institution of Mechanical Engineers，Part F：Journal of Rail and Rapid Transit, 234, 6, pp. 638-654, (2020)
  • [10] Modelling the Piston Effect in Subway Tunnels Using Fire Dynamics Simulator［J］, Environmental Engineering and Management Journal, 18, 4, pp. 865-872, (2019)
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