Numerical study on deposition characteristics of snow particle on bogie of high-speed train

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. © 2020, Zhejiang University Press. All right reserved.