Numerical Simulation of Snow Accumulation on a Bogie of a High-Speed Train
The operation of high-speed trains in ice and snow weather results in a large amount of snow accumulation with ice on bogie, which will seriously damage the safety of high-speed trains. In this paper, the snow accumulation on the bogie has been investigated using numerical simulation method based on Realizable k  turbulence model. The accuracy of mesh resolution and methodology of CFD were validated by combining with the experimental results of wind tunnel tests. The Discrete Phase Model (DPM) was used to investigate the process of snow accumulation on bogie. The results show that the high-concentration snow particles mainly flow under the bogie, and the heat-producing equipment is in high snow concentration while the top surfaces of bogie are in low one; when high-speed trains running in one way, the snow on the front motor and gear cover is more than the rear, while the snow accumulation on the rear brake calipers is more than the front, the accumulation quality of snow on the motors is far more than on brake calipers and gear covers.