Abstract
In order to explore a new method of aerodynamic drag reduction for high-speed trains, the numerical calculation method based on SST k-ω was used to explore the influence of jets at different positions of the train body, joints, tail and different speeds on the turbulent flow field and aerodynamic drag around the train. The research results show that: the whole train with an all-inclusive windshield reduces the drag by about 8.17%; the bionic groove can reduce the drag by about 2.53%; there is a separate area at the rear of the train, and a partial air-inhalation drag reduction scheme is proposed. By calculation, the maximum drag reduction rate is 3.84%. The drag reduction scheme of the vortex generator is arranged locally. Through the calculation of 30 schemes, the maximum drag reduction rate is 3.25%.
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