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Aerodynamic optimization using passive control devices near the bogie cabin of high-speed trains

基于被动控制装置的高速列车转向架区域气动优化

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Abstract

Bogies are responsible for a significant amount of aerodynamic resistance and noise, both of which negatively affect high-speed train performance and passenger comfort. In the present study, the passive control method is applied in designing the bogie cabins of a high-speed train to improve its aerodynamic characteristics. Two passive control measures are introduced, namely, adding a spoiler and creating diversion grooves near the bogie cabins. Furthermore, the aerodynamic and aeroacoustic characteristics of a high-speed train operating at 350 km/h under different control strategies are numerically investigated using the improved-delayed-detached-eddy simulation (IDDES) and the acoustic finite element method (FEM). The impacts of passive control devices on drag reduction, slipstream, and aerodynamic noise are presented and discussed. Numerical results reveal that the passive control devices have a major effect on the slipstream around the train. The amplitude of the fluctuating pressure is higher in the first half of the train than in the second half. The first bogie has the maximum amplitude of the acoustic pressure for both the train with and without passive devices. In the far field, the spoiler installation and placement of the diversion grooves in the front of the bogie cabin can significantly reduce aerodynamic drag and noise. Hence, as shown in this study, using passive control methods to improve the aerodynamic and aeroacoustic properties of high-speed trains can be a viable option.

摘要

高速列车转向架是重要的气动阻力和噪声来源, 这两者都会对高速列车气动性能和乘客的舒适性带来不利影响. 在本研究中, 将被动控制的方法应用于高速列车转向架舱的设计, 以改善其气动性能. 本研究引入了两种被动控制措施, 即加装扰流片和在转向架舱附**设置导流槽. 本文采用改进的延迟分离涡模拟(IDDES)和声学有限元法(FEM), 对高速列车不同被动控制策略下的气动特性和气动声学特性进行了数值研究, 分析并讨论了被动控制装置对减阻、周围气流和气动噪声特性的影响. 研究结果表明, 被动控制装置对列车周围气流有重要影响. 列车前半部分脉动压力幅值高于后半部分. 无论是否加装被动控制装置, 第一个转向架处的声压振幅都是最大的. 对于远场区域, 在转向架舱前安装扰流片和放置导流槽可以明显降低气动阻力和噪声. 因此, 如本研究所示, 采用被动控制方法来改善高速列车气动特性和噪声特性是一种可行的选择.

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Acknowledgements

This work was supported by the Youth Innovation Promotion Association of the Chinese Academy of Sciences (Grant No. 2019020), the Strategic Priority Research Program of the Chinese Academy of Sciences (Class B) (Grant No. XDB22020000), and the Informatization Plan of the Chinese Academy of Sciences (Grant No. XXH13506-204).

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Authors and Affiliations

  1. Key Laboratory for Mechanics in Fluid Solid Coupling Systems, Institute of Mechanics, Chinese Academy of Sciences, Bei**g, 100190, China

    Yongfang Yao  (姚永芳), Zhenxu Sun  (孙振旭), Guowei Yang  (杨国伟), Yi Guo  (郭易) & Mengying Wang  (王梦莹)

  2. School of Engineering Sciences, University of Chinese Academy of Sciences, Bei**g, 100049, China

    Yongfang Yao  (姚永芳), Guowei Yang  (杨国伟) & Mengying Wang  (王梦莹)

  3. China Railway Rolling Stock Corporation Qingdao Sifang Co., Ltd., Qingdao, 266111, China

    Guibo Li  (**桂波)

  4. International Academy of Aviation Industry, King Mongkut’s Institute of Technology Ladkrabang, Bangkok, 10520, Thailand

    Prasert Prapamonthon

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  1. Yongfang Yao  (姚永芳)
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  2. Zhenxu Sun  (孙振旭)
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  6. Yi Guo  (郭易)
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Correspondence to Zhenxu Sun  (孙振旭).

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Yao, Y., Sun, Z., Li, G. et al. Aerodynamic optimization using passive control devices near the bogie cabin of high-speed trains. Acta Mech. Sin. 38, 321363 (2022). https://doi.org/10.1007/s10409-022-21363-x

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