Journal of Mechanical Science and Technology

The Korean Society of Mechanical Engineers (대한기계학회)
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An Experimental Study of Aerodynamic Drag on High-speed Train

  • Kwon, Hyeok-bin (Department of Aerspace Engineering, Institute of Advanced Machinery Design, Sedul National University) ;
  • Lee, Dong-ho- (School of Mechanical and Aerospace Engineering,Seoul National University) ;
  • Baek, Je-hyun (Department of Mechanical Engineering,Phang University of Science and Technology)
  • Published : 2000.11.01
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Abstract

A series do wind tunnel tests were conducted for Korean high-speed train model with various shape components to assess the contributions to aerodynamic drag. In order to elucidate the ground effects, two different wind tunnels, one with a moving ground system and the other with a fixed ground, were used for the same model and the results of both were compared and analyzed in detail. The result show that a suitable ground simulation is necessary for the test of a train model with many cars and detailed underbody. But the relative difference of the drag coefficients for the modifications of shape components can be measured by a fixed ground test with high accuracy and low cost. The effects of the nose shape, the inter-cargap and the bogie-fairing on total drag were discussed and some ideas were prosed to decrease the aerodynamic resistance of high speed train.

Keywords

References

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