Impact of bogie cavity shapes and operational environment on snow accumulating on the bogies of high-speed trains
Artikel i vetenskaplig tidskrift, 2018

In this paper, the snow accumulation on the bogies of high-speed trains has been investigated using a numerical simulation method based on the unsteady Reynolds-Averaged Navier-Stokes simulations (URANS) coupled with the Discrete Phase Model (DPM). The effects of bogie cut outs’ shape, running speed of high-speed trains and snow particle density and diameter on the snow accumulation and particle movement characteristics are discussed. The results show that the bogie installation region with inclined plates shows better anti-snow performance than the configuration with straight plates, which greatly affects the flow structure and snow concentration distribution in the upper space of bogie regions. The running speed of high-speed trains has dominant effect on the snow accumulation on the bogies, and the snow accumulation issue of bogie becomes more serious with increasing running speed. Furthermore, the snow particle density and diameter also have large influence on the snow accumulation on the bogies. With the increase of snow particle density and diameter, the flow range at height direction around bogie region of snow particles become lower and the quality of snow accumulation decrease significantly.

Discrete phase model

Snow accumulation

Bogie installation region

Unsteady Reynolds-averaged Navier-stokes simulation

High-speed train

Författare

Jiabin Wang

National & Local Joint Engineering Research Center of Safety Technology for Rail Vehicle

Central South University

Jie Zhang

Chalmers, Mekanik och maritima vetenskaper, Strömningslära

Yan Zhang

National & Local Joint Engineering Research Center of Safety Technology for Rail Vehicle

Central South University

Fei Xie

Central South University

National & Local Joint Engineering Research Center of Safety Technology for Rail Vehicle

Sinisa Krajnovic

Chalmers, Mekanik och maritima vetenskaper, Strömningslära

Guangjun Gao

National & Local Joint Engineering Research Center of Safety Technology for Rail Vehicle

Central South University

Journal of Wind Engineering and Industrial Aerodynamics

0167-6105 (ISSN)

Vol. 176 211-224

Ämneskategorier

Meteorologi och atmosfärforskning

Strömningsmekanik och akustik

Oceanografi, hydrologi, vattenresurser

DOI

10.1016/j.jweia.2018.03.027