Title: Research of aerodynamic performance of high-speed train crossing canyon with CFD simulation

Authors: Zheng Wang; Xiaoling Zhang; Mingkang Zhang; Yang Sun

Addresses: School of Transportation Management, Zhengzhou Railway Vocational & Technical College, Zhengzhou, Henan, China ' School of Transportation Management, Zhengzhou Railway Vocational & Technical College, Zhengzhou, Henan, China ' School of Locomotive and Rolling Stock, Zhengzhou Railway Vocational & Technical College, Zhengzhou, Henan, China ' Zhengzhou Railway Vocational & Technical College, Zhengzhou, Henan, China

Abstract: Based on computational fluid dynamics, the aerodynamic performance and safety of a train running in a typical canyon terrain are simulated by numerical simulation. By comparing the variation law of surface pressure and aerodynamic characteristics of the train with speed of 250 km/h under the action of the canyon wind field at different speeds, under the action of different canyon wind speeds, the variation law of the surface pressure and aerodynamic load of the train at different positions is consistent; with the increase of wind speed, its aerodynamic. The load increases sharply, and the tunnel environment at both ends of the canyon will have a corresponding impact on the train operation; when the speed of crosswind increases to 25 m/s. It's dangerous for the train running cross the canyon with speed of 250 km/h.

Keywords: high-speed trains; aerodynamics characteristics; CFD simulation; cross-wind effects; operation security.

DOI: 10.1504/IJGEI.2024.137086

International Journal of Global Energy Issues, 2024 Vol.46 No.3/4, pp.310 - 326

Received: 20 May 2022
Accepted: 20 Oct 2022
Published online: 01 Mar 2024 *

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