|Table of Contents|

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

《交通运输工程学报》[ISSN:1671-1637/CN:61-1369/U]

Issue:
2021年01期
Page:
59-80
Research Field:
   综述专刊
Publishing date:

Info

Title:
Review on aerodynamic drag reduction optimization of high-speed trains in China
Author(s):
LI Tian1 DAI Zhi-yuan1 LIU Jia-li2 WU Na3 ZHANG Wei-hua1
(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)
Keywords:
high-speed train drag reduction and optimization aerodynamics aerodynamic drag numerical simulation
PACS:
U271.91
DOI:
10.19818/j.cnki.1671-1637.2021.01.003
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 dragof 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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Last Update: 2021-03-20