Influence of moving boundary conditions on the motion characteristics of wind and snow in the bogie regions of alpine high-speed trains

被引：0
作者：
Wang J. [1 ,2 ]
Liu H. [1 ,2 ]
Liu C. [1 ,2 ]
Shang W. [1 ,2 ]
Zhang Y. [1 ,2 ]
Gao G. [1 ,2 ]
机构：
[1] The State Key Laboratory of Heavy-duty and Express High-power Electric Locomotive, Central South University, Changsha
[2] Key Laboratory of Traffic Safety on Track of Ministry of Education, School of Traffic & Transportation Engineering, Central South University, Changsha
来源：
Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | 2024年 / 55卷 / 05期
关键词：
bogie region; high-speed train; moving boundary; numerical simulation; wind and snow flow;
D O I：
10.11817/j.issn.1672-7207.2024.05.001
中图分类号：
学科分类号：
摘要：
The unsteady Reynolds-averaged Navier-stokes(URANS) method based on the Realizable k - ε turbulence model and the discrete phase model(DPM) were employed to investigate the influence of motion boundaries on the aerodynamic characteristics and snow distribution in the steering gear area of high-speed trains. The results show that the movement of the ground effectively mitigates the flow kinetic energy attenuation effect underneath the steering gear, which significantly increases the flow velocity distribution in the steering gear zone 2 and affects the vertical velocity distribution of snow particles. This leads to a 33.6% reduction in the snow mass on the surface of steering gear 1 and a 20.1% increase in the snow mass on the surface of steering gear 2. The rotation of the train wheelsets does not impact the snow distribution on the bottom surface of the steering gear, but it causes a significant increase in the vertical velocity of snow particles around the rear end plate, and thereby increases the snow distribution on the upper surface of the steering gear. Compared to rotating wheelsets, stationary wheelsets reduce the snow masses on the traction motor, gearbox, frame and rear end plate surfaces by 1.5%, 2.9%, 3.4% and 6.4%, respectively, resulting in an overall 3.2% decrease in the total snow mass on the surface of steering gear 2. Therefore, in the numerical simulation and wind tunnel experiments of snow accumulation in the steering gear area of high-speed trains, it is essential to achieve the relative motion between the steering gear, ground, and wheelsets as accurately as possible. © 2024 Central South University of Technology. All rights reserved.
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页码：1665 / 1677
页数：12
相关论文
共 20 条
  • [1] ZHANG Lichen, Impact of snow disasters to railway power system and the solution, Hubei Electric Power, 35, 3, pp. 51-52, (2011)
  • [2] TAO Gongquan, WEN Zefeng, ZHAO Xin, Et al., Effects of wheel-rail contact modelling on wheel wear simulation, Wear, 366, 367, pp. 146-156, (2016)
  • [3] GUO Linsheng, WEN Yongpeng, SHANG Huilin, Et al., Vertical vibration characteristics of urban rail elastic vehicle body with under-vehicle equipment, Journal of Vibration and Shock, 38, 21, pp. 97-103, (2019)
  • [4] HUANG Zhaowei, FENG Yonghua, GAO Guangjun, Et al., Numerical research of the snow and ice accumulation on the brake calipers of the high-speed trains, Journal of Railway Science and Engineering, 14, 12, pp. 2516-2524, (2017)
  • [5] ALLAIN E, PARADOT N, RIBOURG M, Et al., Experimental and numerical study of snow accumulation on a high-speed train, International Symposium of Applied Aerodynamics, pp. 24-25, (2014)
  • [6] WANG Jiabin, GAO Guangjun, ZHANG Yan, Et al., Anti-snow performance of snow shields designed for brake calipers of a high-speed train, Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit, 233, 2, pp. 121-140, (2019)
  • [7] ZHANG Yan, WANG Jiabin, JIANG Chen, Et al., Investigation of ice and snow accumulations on the bogie areas of high-speed trains using ice wind tunnel experiments, Cold Regions Science and Technology, 199, (2022)
  • [8] GAO Guangjun, LIU Cao, ZHANG Yan, Et al., Research on anti-snow performance of diversion-slot structure in bogie regions of alpine EMU, Journal of Central South University (Science and Technology), 54, 8, pp. 3346-3357, (2023)
  • [9] LOU Zhen, CAI Lu, LI Tian, Et al., Numerical research of the snow and ice accumulation in the bogie region of high-speed train, Journal of Mechanical Engineering, 59, 12, pp. 343-353, (2023)
  • [10] YU Yizheng, YANG Mingzhi, TENG Wanxiu, Et al., Influence of installing arc air deflector at the vehicle bogie front end on the situation of snow and ice accumulation in bogie zone, Urban Mass Transit, 23, 2, pp. 49-54, (2020)
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