中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Effects of Bogies on the Wake Flow of a High-Speed Train

文献类型:期刊论文

作者Liu W(刘雯); Guo DL(郭迪龙); Zhang ZJ; Chen DW; Yang GW(杨国伟)
刊名APPLIED SCIENCES-BASEL
出版日期2019-02-02
卷号9期号:4页码:AR759
ISSN号2076-3417
关键词high-speed train unsteady wake bogie DMD vortex dynamics
DOI10.3390/app9040759
英文摘要

The wake region of high-speed trains is an area of complex turbulent flow characterized by the periodic generation and shedding of vortices, which causes discomfort to passengers and affects the stability and safety of the train. In this study, the unsteady characteristics of the wake flows of three 1:1 scale China Railway High-Speed 380A (CRH380A) high-speed train models with different degrees of simplification were numerically investigated using the improved delayed detached eddy simulation (IDDES) method. Analyses of the aerodynamic forces, train-induced slipstream, and turbulent kinetic energy (TKE) were conducted to determine the effects of the bogies on the wake flow of the high-speed train. It was found that the existence of bogies on the bottom of the train, especially the last bogie, not only enhanced the wake flow but also introduced large perturbances into the wake flow. Moreover, the generation and evolution of the vortices in the wake flows were determined by analyzing the instantaneous flow fields and coherent flow structures that were obtained by the dynamic mode decomposition (DMD) method. The results showed that a pair of large, counter-rotating streamwise vortices in the real model of the high-speed train was generated by the cowcatcher and their intensity was significantly enhanced by perturbances that were introduced by the bogies on the bottom of the train.

分类号Q3
WOS关键词PROPER ORTHOGONAL DECOMPOSITION ; SLIPSTREAM ; PERFORMANCE
WOS研究方向Chemistry, Multidisciplinary ; Materials Science, Multidisciplinary ; Physics, Applied
语种英语
WOS记录号WOS:000460696500145
资助机构National Key R&D Program of China [2016YFB1200506-22] ; Strategic Priority Research Program of the Chinese Academy of Sciences [XDB22020100]
其他责任者Guo, DL
源URL[http://dspace.imech.ac.cn/handle/311007/78501]  
专题力学研究所_流固耦合系统力学重点实验室(2012-)
通讯作者Guo DL(郭迪龙)
作者单位1.{Liu, Wen、Guo, Dilong、Zhang, Zijian、Yang, Guowei} Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
2.{Liu, Wen、Guo, Dilong、Zhang, Zijian、Yang, Guowei} Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China
3.{Chen, Dawei} CRRC Qingdao Sifang Co Ltd, Qingdao 266111, Peoples R China
推荐引用方式
GB/T 7714
Liu W,Guo DL,Zhang ZJ,et al. Effects of Bogies on the Wake Flow of a High-Speed Train[J]. APPLIED SCIENCES-BASEL,2019,9(4):AR759.
APA Liu W,Guo DL,Zhang ZJ,Chen DW,&Yang GW.(2019).Effects of Bogies on the Wake Flow of a High-Speed Train.APPLIED SCIENCES-BASEL,9(4),AR759.
MLA Liu W,et al."Effects of Bogies on the Wake Flow of a High-Speed Train".APPLIED SCIENCES-BASEL 9.4(2019):AR759.

入库方式: OAI收割

来源:力学研究所

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