Effect of Braking Plates on the Aerodynamic Behaviors of a High-Speed Train Subjected to Crosswinds

Le Zhang, Tian Li and Jiye Zhang
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Le Zhang: State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, China
Tian Li: State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, China
Jiye Zhang: State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, China

Energies, 2021, vol. 14, issue 2, 1-19

Abstract: Using aerodynamic resistance to provide braking force for trains is an economical braking method. It has few components to wear out and requires no energy. But the aerodynamic braking plate will significantly affect train’s aerodynamics behaviors. This paper studies the effect of the braking plates’ layout on the aerodynamic force of head car when a train is running under a crosswind. The results show that the braking plate will not only increase the drag force, but also significantly affect the lift and lateral force of the train’s head car. The installation position of the braking plates will also have a great effect on the aerodynamic force. In order to increase the drag force and weaken other aerodynamic force changes of the head car, we suggest that the first braking plate be arranged at the end of a streamlined shape, and the second braking plate be arranged at the middle of the car body. Compared with trains without braking plates, the head car’s drag force increases by 85.7%, lift force only increases by 7.6%, and side force decreases by 5.9%, when the braking plates are in operation.

Keywords: high-speed train; aerodynamic loads; braking plates; surrogate model (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
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