Zhenfeng Wu This email address is being protected from spambots. You need JavaScript enabled to view it.1, Zihao Xie1, Peng Wang1, Wangcai Ding1

1School of Mechanical and Electrical Engineering, Lanzhou Jiaotong University, Lanzhou, China


 

Received: September 19, 2019
Accepted: May 15, 2020
Publication Date: September 1, 2020

Download Citation: ||https://doi.org/10.6180/jase.202009_23(3).0015  

ABSTRACT


Pantograph fairings are typically placed on top of high-speed trains, and their main function is to reduce aerodynamic noise of the pantographs, and consequently, effectively decrease the influence of noise on passengers and residents along the railway. However, the addition of pantograph fairings inevitably increases the aerodynamic drag of high-speed trains. Firstly, 2D drawings and 3D models of the three types of pantograph fairing were designed, and the car body and the pantograph fairing were installed. Secondly, the aerodynamic drag of pantograph fairings of different structure and pantograph was calculated at different speeds using computational fluid dynamics software by defining the geometric model, mathematical model, flow field, grid size and boundary condition. The simulation results show that the ellipsoidal pantograph fairing is the best in terms of the total aerodynamic drag of pantograph and fairing, followed by that of the guide surface, whereas that of the double arch is the worst. The aerodynamic drag of the ellipsoidal pantograph fairing decreased by an average of 56.7% within a speed range of 0–300 km/h compared with that of the double arch.


Keywords: High-Speed Train; Pantograph Fairing; Aerodynamic Drag; Performance Analysis; Numerical Simulation


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