Numerical investigation of snow accumulation on a high-speed train by snow saltation

Jinkyu Bae, Soonho Shon, Hyeokbin Kwon and Kwanjung Yee

International Journal of Rail Transportation, 2023, vol. 11, issue 4, 465-489

Abstract: Snow accumulation on the undercarriage of a train is an important issue that significantly degrades the safety and performance of the vehicle. This phenomenon is primarily attributed to snow saltation induced by train-generated wind gusts. This study numerically investigated the snow accumulation on a train by modelling the snow saltation for the initial movement of drifting snow from the ground. A semi-empirical snow saltation model was applied to the boundary condition for a snow-covered ground, and Eulerian governing equations were solved for snow phase flow. Using the present method, a high-speed train model comprising multiple cars and a single-car model were simulated. The results presented the novel trend of snow accumulation, which gradually increased towards the rear of the train but remained relatively constant after a third car.

Date: 2023
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DOI: 10.1080/23248378.2022.2094483

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International Journal of Rail Transportation is currently edited by Wanming Zhai and Kelvin C. P. Wang

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