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Open Access

ARTICLE

Effect of Railway Spacing on Aerodynamic Performance of 600 km/h Maglev Trains Passing Each Other

Bailong Sun1, Tian Li1,*, Deng Qin1, Yan Li2
1 State Key Laboratory of Rail Transit Vehicle System, Southwest Jiaotong University, Chengdu, 610031, China
2 Southwest Jiaotong University Chengdu Design Institute Co., Ltd., Southwest Jiaotong University, Chengdu, 610031, China
* Corresponding Author: Tian Li. Email: email
(This article belongs to the Special Issue: Computational Fluid Dynamics: Two- and Three-dimensional fluid flow analysis over a body using commercial software)

Fluid Dynamics & Materials Processing https://doi.org/10.32604/fdmp.2024.055519

Received 29 June 2024; Accepted 27 September 2024; Published online 31 October 2024

Abstract

High-speed maglev trains (HSMTs) can run at high running speeds due to their unique design. The pressure waves that these trains generate while passing each other are therefore very intense, and can even have safety implications. In order to reduce the transient impact of such waves, the standard k-ε turbulence model is used in this work to assess the effect of railway spacing on the aerodynamic loads, pressure and surrounding flow field of 600 km/h maglev trains passing each other in open air. The sliding mesh technique is used to determine the relative motion between the considered trains. The results show that the surface pressure is approximately linearly correlated with the square of the speed while the amplitude of the pressure wave on the train surface, side force, and rolling moment all have negative exponential relationships with the railway spacing.

Keywords

Railway spacing; maglev train; aerodynamic; numerical simulation; two trains passing each other

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