| 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)
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| Source Publication | Proceedings of the 1st International Workshop on High-Speed and Intercity Railways, Vol.2 |
| 2012 | |
| Pages | 19-30 |
| Conference Name | 1st International Workshop on High-Speed and Intercity Railways, IWHIR 2011 |
| Conference Date | JULY 19-22, 2011 |
| Conference Place | Shenzhen, Hong Kong, China |
| Abstract | In 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. |
| Keyword | Air Pressure Pulse Cross-section Shape Aerodynamic Performance Numerical Simulation |
| Department | LMFS流固耦合与数值计算(LHO) |
| Funding Organization | The Hong Kong Polytechnic University,Hong Kong,China |
| ISBN | 978-3-642-27962-1 |
| URL | 查看原文 |
| Indexed By | EI |
| Language | 英语 |
| Document Type | 会议论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/46798 |
| Collection | 流固耦合系统力学重点实验室 |
| Corresponding Author | Liu 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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