Numerical Simulation of Snow Formation in Bogie Area of High-speed Train
When high-speed train runs in cold rain and snow area,its bogie area is easy to form snow,whose particles rising upward from the ground threaten the train safety.Therefore,a wind-induced snow particle motion model based on wall shear stress was built for the study of snow particle motion in the ground snow under the effect of train wind.The Euler-Lagrange method was adoted to establish a snow deposition boundary model based on snow deposition criteria,and the resech on the bogie area snow distribution under wind-induced snow particle motion condition was conducted.The results show that the high-speed airflow rises upward at high speed in the area right below the bogie,of which the plate,frame and axle box are the main snow-covered parts,and the amount of snow deposition in the bogie area is related to the location of the bogie,the density and diameter of snow particles and the wall conditions.
万方数据
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