Journal of Central South University of Technology

, Volume 16, Issue 1, pp 166–171 | Cite as

Formation mechanism of aerodynamic drag of high-speed train and some reduction measures

Article

Abstract

Aerodynamic drag is proportional to the square of speed. With the increase of the speed of train, aerodynamic drag plays an important role for high-speed train. Thus, the reduction of aerodynamic drag and energy consumption of high-speed train is one of the essential issues for the development of the desirable train system. Aerodynamic drag on the traveling train is divided into pressure drag and friction one. Pressure drag of train is the force caused by the pressure distribution on the train along the reverse running direction. Friction drag of train is the sum of shear stress, which is the reverse direction of train running direction. In order to reduce the aerodynamic drag, adopting streamline shape of train is the most effective measure. The velocity of the train is related to its length and shape. The outer wind shields can reduce train’s air drag by about 15%. At the same time, the train with bottom cover can reduce the air drag by about 50%, compared with the train without bottom plate or skirt structure.

Key words

aerodynamics of train high speed train aerodynamic drag drag reduction 

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References

  1. [1]
    RAGHUNATHAN R S, KIM H D, SETOGUCHI T. Aerodynamics of high-speed railway train [J]. Progress in Aerospace Sciences, 2002, 38(6/7): 469–514.CrossRefGoogle Scholar
  2. [2]
    SCHETZ J A. Aerodynamics of high-speed trains [J]. Annual Review of Fluid Mechanics, 2001, 33: 371–414.CrossRefGoogle Scholar
  3. [3]
    WATKINS S, SAUNDERS J W, KUMAR H, Aerodynamic drag reduction of goods trains [J]. Journal of Wind Engineering and Industrial Aerodynamics, 1992, 40(2): 147–178.CrossRefGoogle Scholar
  4. [4]
    BARCALA M A, MESEGUER J. An experimental study of the influence of parapets on the aerodynamic loads under cross wind on a two-dimensional model of a railway vehicle on a bridge [J]. Journal of Rail and Rapid Transit, 2007, 221(4): 487–494.CrossRefGoogle Scholar
  5. [5]
    SUZUKI M, TANEMOTO K, MAEDA T. Aerodynamic characteristics of train/vehicles under cross winds[J]. Journal of Wind Engineering and Industrial Aerodynamics, 2003, 91(1/2): 209–218.CrossRefGoogle Scholar
  6. [6]
    TIAN Hong-qi. Study evolvement of train aerodynamics in China[J]. Journal of Traffic and Transportation Engineering, 2006, 6(1): 1–9. (in Chinese)Google Scholar
  7. [7]
    OZAWA S. Aerodynamic forces on train [M]. Tokyo: The Japan Society of Mechanical Engineers, 1990.Google Scholar
  8. [8]
    SCHLICHTING H, GERSTEN K. Boundary layer theory[M]. Berlin: Springer-Verlag, 2000.Google Scholar
  9. [9]
    STEPHEN B P. Turbulent flows [M]. Cambridge: Cambridge University Press, 2000.Google Scholar
  10. [10]
    TIAN Hong-qi, ZHOU Dan, XU Ping. Aerodynamic performance and streamlined head shape of train [J]. China Railway Science, 2006, 27(3): 47–55. (in Chinese)Google Scholar
  11. [11]
    LAI Y C, BARKAN C P L, ONAL H. Optimizing the aerodynamic efficiency of intermodal freight trains[J]. Transportation Research Part E: Logistics and Transportation Review, 2008, 44: 820–834.CrossRefGoogle Scholar
  12. [12]
    GUILMINEAU E. Computational study of flow around a simplified car body [J]. Journal of Wind Engineering and Industrial Aerodynamics, 2008, 96(6/7): 1207–1217.CrossRefGoogle Scholar
  13. [13]
    GROSCHE F R, MEIER G E A. Research at DLR Göttingen on bluff body aerodynamics, drag reduction by wake ventilation and active flow control [J]. Journal of Wind Engineering and Industrial Aerodynamics, 2001, 89(14/15): 1201–1218.CrossRefGoogle Scholar
  14. [14]
    COGOTTI A. Evolution of performance of an automotive wind tunnel [J]. Journal of Wind Engineering and Industrial Aerodynamics, 2008, 96(6/7): 667–700.CrossRefGoogle Scholar
  15. [15]
    TIAN Hong-qi. Train aerodynamics [M]. Beijing: China Railway Publishing House, 2007. (in Chinese)Google Scholar

Copyright information

© Central South University Press and Springer-Verlag GmbH 2009

Authors and Affiliations

  1. 1.Key Laboratory of Traffic Safety on Track of Ministry of EducationCentral South UniversityChangshaChina
  2. 2.School of Traffic and Transportation EngineeringCentral South UniversityChangshaChina

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