Aerodynamic effect analysis of high-speed train entering and leaving single and double track tunnels under crosswind

Minggao Chen, Jun Mao and Yanhong Xi

International Journal of Rail Transportation, 2024, vol. 12, issue 2, 304-326

Abstract: The aerodynamic effects of high-speed train running in and out of single-hole single-track and single-hole double-track tunnels and across bridges and tunnels under crosswind are studied by means of train moving model experiment and numerical simulation. The pressure fluctuation amplitude of the train entering and exiting the single-track tunnel is larger than that of the train entering and exiting the double-track tunnel under the crosswind, and the maximum amplitude can reach 2824 Pa. When the train enters or exits the single-track tunnel, the aerodynamic force of the leading carriage is less than that of the double-track tunnel except the yawing moment. Except for the yawing moment, the aerodynamic force of the tail carriage in single-track is greater than that of the double-track tunnel at the stage of the train leaving the tunnel; when the train enters the single-track tunnel, the aerodynamic force is less than that of the double-track tunnel.

Date: 2024
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DOI: 10.1080/23248378.2023.2165182

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