浙江大学学报(工学版)  2020, Vol. 54 Issue (4): 804-815    DOI: 10.3785/j.issn.1008-973X.2020.04.020
 土木工程、交通工程

Numerical study on deposition characteristics of snow particle on bogie of high-speed train
Lu CAI(),Tian LI,Ji-ye ZHANG*()
State Key Laboratory of Traction Power, Southwest Jiao Tong University, Chengdu 610031, China
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Abstract:

A snow particle deposition model based on the critical capture angle and the critical shear velocity was established in order to reveal the deposition distribution of snow particles on the bogie surface of high-speed trains. The Lagrangian method was used to simulate the motion of snow particles. The deposition characteristics of snow particle on the bogie surface were analyzed. Results show that the bottom of the bogie frame, the anti-snake damper, the intermediate brake clamps in the rear wheelset, the traction rod and the anti-rolling torsion bar are the areas prone to accumulate snow particles. The vertical surfaces of the rear region, the horizontal surfaces of the front region and the corner areas of the bogie have high adhesion rate. Whether it is the amount of snow accretion or the adhesion rate, the area of the cross beam of the bogie frame is the largest. The average snow accumulation of each component from high to low is traction rod, frame, bolster, brake clamp 2, anti-rolling torsion bar, brake clamp 1, transverse damper, axle box 2, axle box 1, air spring, anti-snake damper, tread cleaning device. The average snow accumulation on the traction rod, frame, bolster, and clamp 2 is about double that of other components, and the average snow accumulation on brake clamp 2 is about twice as high as on brake clamp 1. When the capture angle varies from 30 to 60 degrees, the change of the critical capture angle has slightly effect on the total snow accretion on each component.

Key words: high-speed train    bogie    discrete phase model    snow drift    snow particle deposition

 CLC: U 271

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Lu CAI,Tian LI,Ji-ye ZHANG. Numerical study on deposition characteristics of snow particle on bogie of high-speed train. Journal of ZheJiang University (Engineering Science), 2020, 54(4): 804-815.

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 图 1  计算域与转向架模型 图 2  粒子喷射器位置 图 3  雪粒与壁面的碰撞结果 图 4  粒子-壁面碰撞计算流程 图 5  不同网格的转向架底部中心线压力系数对比 图 6  转向架区域流场计算网格 表 1  连续相和离散相边界条件 图 7  转向架区域纵向切片位置 图 8  转向架区域纵向切片上的流线 图 9  雪粒进入转向架区域的过程 图 10  转向架区域的雪粒分布 图 11  转向架表面的摩擦风速 图 12  转向架表面的雪粒入射质量分布 图 13  转向架各部件上的总雪粒撞击数 图 14  转向架表面的雪粒堆积量分布 图 15  转向架各部件的积雪量与逃逸量对比 图 16  转向架表面的雪粒黏附率分布 图 17  高速列车转向架区域积雪 图 18  不同捕获角度下的转向架各部件的平均入射量、堆积量、黏附率对比 图 19  不同捕获角度下的转向架表面雪粒堆积量分布
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