Abstract
Compared with the traditional train, the operational speed of the high-speed train has largely improved, and the dynamic environment of the train has changed from one of mechanical domination to one of aerodynamic domination. The aerodynamic problem has become the key technological challenge of high-speed trains and significantly affects the economy, environment, safety, and comfort. In this paper, the relationships among the aerodynamic design principle, aerodynamic performance indexes, and design variables are first studied, and the research methods of train aerodynamics are proposed, including numerical simulation, a reduced-scale test, and a full-scale test. Technological schemes of train aerodynamics involve the optimization design of the streamlined head and the smooth design of the body surface. Optimization design of the streamlined head includes conception design, project design, numerical simulation, and a reduced-scale test. Smooth design of the body surface is mainly used for the key parts, such as electric-current collecting system, wheel truck compartment, and windshield. The aerodynamic design method established in this paper has been successfully applied to various high-speed trains (CRH380A, CRH380AM, CRH6, CRH2G, and the Standard electric multiple unit (EMU)) that have met expected design objectives. The research results can provide an effective guideline for the aerodynamic design of high-speed trains.
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Acknowledgments
This project was supported by the National Key Technology R&D Program of China (Grant 2013BAG22Q00) and the China Railway Science and Technology R&D Program (2015J009-D).
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Ding, SS., Li, Q., Tian, AQ. et al. Aerodynamic design on high-speed trains. Acta Mech. Sin. 32, 215–232 (2016). https://doi.org/10.1007/s10409-015-0546-y
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DOI: https://doi.org/10.1007/s10409-015-0546-y