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The time-averaged aerodynamic drag was compared with experimental data from wind tunnel tests. In this paper, a Detached Eddy Simulation method based on the Realizable k- ε turbulence model was used to investigate the underbody flow features of high-speed trains with different compound modes in the angles of bogie cut outs at Re = 1.85 × 10 6.
Hence, the purpose of this paper is to find out a new compound mode of bogie cut outs to achieve drag reduction for a Chinese high-speed train.
The aerodynamic drag of a high-speed train can contribute significantly to its energy consumption.
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