JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE) ›› 2016, Vol. 46 ›› Issue (2): 108-115.doi: 10.6040/j.issn.1672-3961.0.2015.162

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Effect of outside vehicle windshield on aerodynamic performance of high-speed train under crosswind

NIU Jiqiang, LIANG Xifeng*, XIONG Xiaohui, LIU Feng   

  1. School of Traffic &
    Transportation Engineering, Central South University, Changsha 410075, Hunan, China
  • Received:2015-06-01 Online:2016-04-20 Published:2015-06-01

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Abstract: Three-dimensional steady uncompressible Reynolds-averaged N-S(Navier-Stokes)equation and RNG(renormalization group)κ-ε equation turbulence model were used to simulate the aerodynamic performance of the three-carriage high-speed train. The effect of outside vehicle windshield on the aerodynamic performance of high-speed train was studied by change the angle of sideslip. The results showed that testing results generated by the selected algorithm were in agreement with experimental data, and the deviation between them was below 10%. The distribution of the surface pressure coefficient along train was not affected by the windshield, and the amplitude of them had no significant differences. There was significant difference on distribution of the pressure coefficient around the windshield among different cases, and doubled pressure coefficient appeared in some occasions. With the sideslip angle increased, the difference among the six cases was more and more obviously, the maximum difference was 176%. With the increase of sideslip angle, the influence of windshield on lateral force coefficient, lift coefficient and moment coefficient was more significant, maximum differences were 17.71%, 6.35% and 7.52%, respectively. Anti-overturning ability of train with the total enclosed windshield was relatively optimal, and drag force of train with semi typed windshield and smooth typed windshield in wind environment were reduced obviously.

Key words: angle of sideslip, aerodynamic moment coefficient, high-speed train, vestibule diaphragm device, aerodynamic force coefficient

CLC Number: 

  • U27
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