IMECH-IR  > 流固耦合系统力学重点实验室
The influence of different cross-section shapes of train body on aerodynamic performance
Liu CH(刘晨辉); Guo DL(郭迪龙); Yao SB(姚拴宝); Yang GW(杨国伟); Liu CH(刘晨辉)
Source PublicationProceedings of the 1st International Workshop on High-Speed and Intercity Railways, Vol.2
2012
Pages19-30
Conference Name1st International Workshop on High-Speed and Intercity Railways, IWHIR 2011
Conference DateJULY 19-22, 2011
Conference PlaceShenzhen, Hong Kong, China
AbstractIn this paper, the influence of different cross-section shapes of train body on aerodynamic performance has been investigated by numerical simulations. Computational fluid dynamics (CFD) is used with the second-order finite volume method with SST k-omega turbulence model. The results indicate that the aerodynamic performance is strongly affected by different cross-section shapes of train body, such as cross-sectional area, width-to-height ratio of cross-section, cross-section with straight or curved sides, etc.. Firstly, the drag coefficient and the overturning moment increase as the sides of cross-section become more curved. Secondly, the drag coefficient and the overturning moment are reduced as the width-to-height ratio of the cross-section is increased when the cross-sectional area is kept as a constant. Finally, air pressure pulse produced by two trains passing by in tunnel is approximately proportional to the cross-sectional area in a certain range and is independent to the cross-section shapes. Numerical results can be used for aerodynamic shape design of high speed trains.
KeywordAir Pressure Pulse Cross-section Shape Aerodynamic Performance Numerical Simulation
DepartmentLMFS流固耦合与数值计算(LHO)
Funding OrganizationThe Hong Kong Polytechnic University,Hong Kong,China
ISBN978-3-642-27962-1
URL查看原文
Indexed ByEI
Language英语
Document Type会议论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/46798
Collection流固耦合系统力学重点实验室
Corresponding AuthorLiu CH(刘晨辉)
Recommended Citation
GB/T 7714
Liu CH,Guo DL,Yao SB,et al. The influence of different cross-section shapes of train body on aerodynamic performance[C]Proceedings of the 1st International Workshop on High-Speed and Intercity Railways, Vol.2,2012:19-30.
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