A numerical study of snow accumulation on the bogies of high-speed trains based on coupling improved delayed detached eddy simulation and discrete phase model
Journal article, 2019
A numerical simulation method based on the improved delayed detached eddy simulation coupled with a discrete phase model is used to study the influence of the snow on the performance of bogies of a high-speed train running in snowy weather. The snow particle trajectories, mass of snow packing on the bogie, and thickness of snow accumulation have been analyzed to investigate the flow mechanisms of snow accumulation on different parts of the bogies. The results show that the snow accumulation on the first bogie of the head vehicle is almost the same as that of the second bogie, but the total accumulated snow on the top side of the second bogie is more than 74% higher than that of the first bogie. Among all the components of the bogies, the motors were found to be strongly influenced by the snow accumulation. The underlying flow mechanisms responsible for the snow accumulations are discussed.
discrete phase model
improved delayed detached eddy simulation
train bogie
snow accumulation
High-speed train aerodynamics
Author
Mingyang Liu
National & Local Joint Engineering Research Center of Safety Technology for Rail Vehicle
Central South University
Jiabin Wang
National & Local Joint Engineering Research Center of Safety Technology for Rail Vehicle
Central South University
Huifen Zhu
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. 233 7 715-730Subject Categories (SSIF 2011)
Applied Mechanics
Vehicle Engineering
Fluid Mechanics and Acoustics
DOI
10.1177/0954409718805817