A numerical investigation on the improvement of anti-snow performance of the bogies of a high-speed train
Journal article, 2020
In this paper, numerical simulations combining unsteady Reynolds-averaged Navier-Stokes (URANS) simulation and the discrete phase model are used to study the application of countermeasure for snow accumulation in the regions of bogie cavities of a high-speed train. The influence of the cowcatcher heights and guide structure configurations on the flow features and snow accumulation was studied. The results of the study show that the cowcatcher with a downward elongation of 4% of the distance between the two axles decreases the snow accumulation in the first and the second bogie regions by about 56.6% and 13.6%, respectively. Furthermore, the guide structures have been found to significantly alter the velocity and pressure distribution in the second bogie region, resulting in a relatively large snow-accumulation reduction. The deflector is found to perform better in reducing snow accumulation when compared to the diversion slots. The cowcatcher, elongated in the downward direction, and the deflector proved to be a good countermeasure for snow accumulation around the bogies of high-speed trains operating in snowy weather conditions. © IMechE 2019.
Bogies
snow reduction
guide structure
high-speed train
numerical simulation
cowcatcher height
Author
Jiabin Wang
National & Local Joint Engineering Research Center of Safety Technology for Rail Vehicle
Central South University
Yan Zhang
National & Local Joint Engineering Research Center of Safety Technology for Rail Vehicle
Central South University
Jie Zhang
Chalmers, Mechanics and Maritime Sciences (M2), Fluid Dynamics
Xifeng Liang
National & Local Joint Engineering Research Center of Safety Technology for Rail Vehicle
Central South University
Sinisa Krajnovic
Chalmers, Mechanics and Maritime Sciences (M2), Fluid Dynamics
Guangjun Gao
National & Local Joint Engineering Research Center of Safety Technology for Rail Vehicle
Central South University
Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit
0954-4097 (ISSN) 20413017 (eISSN)
Vol. 234 10 1319-1334Subject Categories
Energy Engineering
Vehicle Engineering
Fluid Mechanics and Acoustics
DOI
10.1177/0954409719893494