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CLC number: U270.1+1; V211

On-line Access: 2011-12-01

Received: 2011-09-23

Revision Accepted: 2011-09-25

Crosschecked: 2011-09-26

Cited: 3

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Journal of Zhejiang University SCIENCE A 2011 Vol.12 No.12 P.957-963

http://doi.org/10.1631/jzus.A11GT008


Unsteady simulation for a high-speed train entering a tunnel


Author(s):  Xin-hua Li, Jian Deng, Da-wei Chen, Fang-fang Xie, Yao Zheng

Affiliation(s):  School of Aeronautics and Astronautics, Zhejiang University, Hangzhou 310027, China, National Engineering Laboratory for System Integration of High-Speed Train (South), CSR Qingdao Sifang Co., Ltd., Qingdao 266111, China

Corresponding email(s):   zjudengjian@zju.edu.cn

Key Words:  High-speed train, Aerodynamics, Railway tunnel, Numerical analysis


Xin-hua Li, Jian Deng, Da-wei Chen, Fang-fang Xie, Yao Zheng. Unsteady simulation for a high-speed train entering a tunnel[J]. Journal of Zhejiang University Science A, 2011, 12(12): 957-963.

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A1 - Jian Deng
A1 - Da-wei Chen
A1 - Fang-fang Xie
A1 - Yao Zheng
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Abstract: 
In order to study the unsteady aerodynamics effects in railway tunnels, the 3D Reynolds average Navier-Stokes equations of a viscous compressible fluid are solved, and the two-equation k-ε model is used in the simulation of turbulence, while the dynamic grid technique is employed for moving bodies. We focus on obtaining the changing tendencies of the aerodynamic force of the train and the aerodynamic pressures on the tunnel wall and train surface, and discovering the relationship between the velocity of the train and the intensity of the micro pressure wave at the tunnel exit. It is shown that the amplitudes of the pressure changes in the tunnel and on the train surface are both approximately proportional to the square of the train speed, so are the microwave and the drag of the train.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

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[8]Luo, J.J., Gao, B., Wang, Y.X., Zhao, W.C., 2004. Numerical simulation of unsteady three dimensional flow induced by high-speed train entering tunnel with shaft. Journal of Southwest Jiaotong University, 39(4):442-446 (in Chinese).

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[16]Woods, W.A., Pope, C.W., 1979. On the Range of Validity of Simplified One Dimensional Theories for Calculating Unsteady Flows in Railway Tunnels. The 3rd International Symposium on the Aerodynamics and Ventilation of Vehicle Tunnels, Sheffield, UK, p.115-150.

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Open peer comments: Debate/Discuss/Question/Opinion

<1>

NASIR@STUDENT<sheikhnasir39@gmail.com>

2012-02-06 20:47:18

hello

Respected

i am from kashmir( india) . i am working on 2D cfd analysis of train moving in tunnel. i had problem in sliding mesh technique can any body help me. my email id sheikhnasir39@gmail.com

thanks

with regards

Please provide your name, email address and a comment





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