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Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2011, Vol. 12 Issue (12): 964-970    DOI: 10.1631/jzus.A11GT001
Aerodynamics     
Aerodynamic modeling and stability analysis of a high-speed train under strong rain and crosswind conditions
Xue-ming Shao, Jun Wan, Da-wei Chen, Hong-bing Xiong
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
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Abstract  With the development of high-speed train, it is considerably concerned about the aerodynamic characteristics and operation safety issues of the high-speed train under extreme weather conditions. The aerodynamic performance of a high-speed train under heavy rain and strong crosswind conditions are modeled using the Eulerian two-phase model in this paper. The impact of heavy rainfall on train aerodynamics is investigated, coupling heavy rain and a strong crosswind. Results show that the lift force, side force, and rolling moment of the train increase significantly with wind speed up to 40 m/s under a rainfall rate of 60 mm/h. when considering the rain and wind conditions. The increases of the lift force, side force, and rolling moment may deteriorate the train operating safety and cause the train to overturn. A quasi-static stability analysis based on the moment balance is used to determine the limit safety speed of a train under different rain and wind levels. The results can provide a frame of reference for the train safe operation under strong rain and crosswind conditions.

Key wordsHigh-speed train      Aerodynamic characteristics      Multiphase flow      Rain      Crosswind      Overturning     
Received: 23 June 2011      Published: 01 December 2011
CLC:  O359  
  TD524  
Cite this article:

Xue-ming Shao, Jun Wan, Da-wei Chen, Hong-bing Xiong. Aerodynamic modeling and stability analysis of a high-speed train under strong rain and crosswind conditions. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2011, 12(12): 964-970.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.A11GT001     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2011/V12/I12/964

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