Volume 21 Issue 1
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LI Tian, DAI Zhi-yuan, LIU Jia-li, WU Na, ZHANG Wei-hua. Review on aerodynamic drag reduction optimization of high-speed trains in China[J]. Journal of Traffic and Transportation Engineering, 2021, 21(1): 59-80. doi: 10.19818/j.cnki.1671-1637.2021.01.003
Citation: LI Tian, DAI Zhi-yuan, LIU Jia-li, WU Na, ZHANG Wei-hua. Review on aerodynamic drag reduction optimization of high-speed trains in China[J]. Journal of Traffic and Transportation Engineering, 2021, 21(1): 59-80. doi: 10.19818/j.cnki.1671-1637.2021.01.003
shu

Review on aerodynamic drag reduction optimization of high-speed trains in China

doi: 10.19818/j.cnki.1671-1637.2021.01.003
  • 1.

    State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, Sichuan, China

  • 2.

    CRRC Qingdao Sifang Co., Ltd., Qingdao 266111, Shandong, China

  • 3.

    CRRC Changchun Railway Vehicles Co., Ltd., Changchun 130062, Jilin, China

Funds:

National Key Research and Development Program of China 2020YFA0710902

Sichuna Science and Technology Program 2019YJ0227

China Postdoctoral Science Foundation 2019M663550

Independent Subject of State Key Laboratory of Traction Power 2019TPL_T02

More Information
  • Author Bio:

    LI Tian(1984-), male, associate professor, PhD, litian2008@home.swjtu.edu.cn

  • Received Date: 2020-09-14
  • Publish Date: 2021-08-27
    Abstract
  • The progress on aerodynamic drag reduction optimization of high-speed trains in China was studied. The pressure distribution characteristics of typical components and the contribution of each component to the train's aerodynamic drag were summarized. Three research methods for obtaining train aerodynamic drag, including full-scale experiments, wind tunnel tests, and numerical simulations, were evaluated. The differences in aerodynamic performances of train heads of Hexie and Fuxing were discussed. The optimization methods and technologies of aerodynamic drag reduction for high-speed train heads were expounded. The aerodynamic drag reduction measures of bogies, inter-car connections, pantographs, and deflectors were analyzed, and the potential technologies suitable for high-speed train drag reduction were summarized. Analysis results show that there are both advantages and disadvantages of numerical simulation and wind tunnel test, the numerical simulation as validated by the wind tunnel test is an effective means of accurately calculating the aerodynamic drag of the train. The main components contributing to the aerodynamic drag of the train are leading car, trailing car, bogie, pantograph, and inter-car connection. As existing high-speed trains are highly streamlined, achieving further drag reduction by optimizing the head shape is difficult. Optimizing the skirts of the bogie area, incorporating an all-inclusive outer windshield, and optimizing the pantograph and deflector shape are effective measures for further reducing drag. The optimization of multiple objectives including drag and noise reduction and improvements to operational stability and riding comfort are the developmental trends of train head shape design. Through direct optimization calculation or surrogate model optimization calculation, the optimization efficiency can be improved, and the optimization cost can be reduced. In the future, bionic surface microstructure, blowing and suction flow control, plasma drag reduction, and vortex generator technologies should be further studied to achieve green, energy-saving, and rapid development of high-speed trains in China. 1 tab, 20 figs, 109 refs.

     

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