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CLC number: O359; TD524

On-line Access: 2011-12-01

Received: 2011-06-23

Revision Accepted: 2011-06-24

Crosschecked: 2011-06-24

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Journal of Zhejiang University SCIENCE A 2011 Vol.12 No.12 P.971-978

http://doi.org/10.1631/jzus.A11GT005


Numerical study on the aerodynamic performance and safe running of high-speed trains in sandstorms


Author(s):  Hong-bing Xiong, Wen-guang Yu, Da-wei Chen, Xue-ming Shao

Affiliation(s):  Department of Mechanics, 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):   mecsxm@zju.edu.cn

Key Words:  High-speed train, Sandstorm, Gas-solid multiphase, Eulerian two-phase model, Aerodynamic, Safety, Speed limit


Hong-bing Xiong, Wen-guang Yu, Da-wei Chen, Xue-ming Shao. Numerical study on the aerodynamic performance and safe running of high-speed trains in sandstorms[J]. Journal of Zhejiang University Science A, 2011, 12(12): 971-978.

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publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A11GT005"
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%T Numerical study on the aerodynamic performance and safe running of high-speed trains in sandstorms
%A Hong-bing Xiong
%A Wen-guang Yu
%A Da-wei Chen
%A Xue-ming Shao
%J Journal of Zhejiang University SCIENCE A
%V 12
%N 12
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%@ 1673-565X
%D 2011
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A11GT005

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T1 - Numerical study on the aerodynamic performance and safe running of high-speed trains in sandstorms
A1 - Hong-bing Xiong
A1 - Wen-guang Yu
A1 - Da-wei Chen
A1 - Xue-ming Shao
J0 - Journal of Zhejiang University Science A
VL - 12
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SP - 971
EP - 978
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Y1 - 2011
PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.A11GT005


Abstract: 
The influence of sandstorms on train aerodynamic performance and safe running was studied in response to the frequent occurrence of sandstorm weather in north China. An eulerian two-phase model in the computational fluid dynamic (CFD) software FLUENT, validated with published data, was used to solve the gas-solid multiphase flow of a sandstorm around a train. The train aerodynamic performance under different sandstorm levels and no sand conditions was then simulated. Results showed that in sandstorm weather, the drag, lift, side forces and overturning moment increase by variable degrees. Based on a numerical analysis of aerodynamic characteristics, an equation of train stability was also derived using the theory of moment balance from the view of dynamics. A recommended speed limit of a train under different sandstorm levels was calculated based on the stability analysis.

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

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