The influence of aerodynamic characteristics on the aerodynamic brake plate of high-speed train

Bethlehem Kebede Abera; Beikun Wang; Yaohui Lu

doi:10.1117/12.3016122

20 February 2024 The influence of aerodynamic characteristics on the aerodynamic brake plate of high-speed train

Bethlehem Kebede Abera, Beikun Wang, Yaohui Lu

Proceedings Volume 13064, Seventh International Conference on Traffic Engineering and Transportation System (ICTETS 2023); 1306404 (2024) https://doi.org/10.1117/12.3016122
Event: 7th International Conference on Traffic Engineering and Transportation System (ICTETS 2023), 2023, Dalian, China

Abstract

In high-speed trains, aerodynamic forces can have a significant impact on the performance of the brake plate. This paper propose an aerodynamic brake plate for a high-speed train and analyses the high-speed train's aerodynamic performance assessed by the Reynolds averaged Navier–Stokes (RANS) equations based on the k−ω turbulence model. The results show that the effect of the opening of the plate increases the turbulence of the downstream flow field behind the plate, which creates a recirculation zone. The affected area is mainly concentrated in the flow field around the location of the plate for the pressure field and the whole flow field behind the plate for the velocity field. The effect of pressure difference near the plate creates vortices. Additionally, the plate affects the velocity field by causing a significant decrease in velocity upstream, increase in the airflow separation from the plate, as well as a decrease downstream due to a recirculation zone and turbulence. Indeed, the plate also decreases turbulent kinetic energy near it. These findings highlight the importance of aerodynamic design elements, such as the braking plate in optimizing train performance and controlling velocity. Further research in this area can contribute to developing more efficient and streamlined high-speed train designs.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Bethlehem Kebede Abera, Beikun Wang, and Yaohui Lu "The influence of aerodynamic characteristics on the aerodynamic brake plate of high-speed train", Proc. SPIE 13064, Seventh International Conference on Traffic Engineering and Transportation System (ICTETS 2023), 1306404 (20 February 2024); https://doi.org/10.1117/12.3016122

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KEYWORDS

Education and training

Aerodynamics

Turbulence

3D modeling

Design and modelling

Boundary conditions

Mechanical engineering

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