한국철도학회:학술대회논문집 (Proceedings of the KSR Conference)

한국철도학회 (The Korean Society for Railway)
권호 표지

차세대 고속열차 대차 형상에 따른 공기저항 변화에 대한 실험적 연구

Experimental Study on Aerodynamic Drag Characteristics by Train Bogie Shape Variation

  • 곽민호 (서울대학교 기계항공공학부) ;
  • 이영빈 (서울대학교 기계항공공학부) ;
  • 이정욱 (서울대학교 기계항공공학부) ;
  • 김규홍 (서울대학교 기계항공공학부) ;
  • 이동호 (서울대학교 기계항공공학부, 항공우주신기술연구소) ;
  • 정형석 (공군사관학교) ;
  • 장영일 (공군사관학교) ;
  • 권혁빈 (한국철도기술연구원, 초고속열차연구실)
  • 발행 : 2011.05.26
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초록

Wind tunnel tests are performed so as to investigate the aerodynamic drag characteristics of HEMU-400x, next generation Korean high speed train. The experiments of 1/20 scaled 5-car train model are done at 30, 40, 50, 60m/s with a normal bogie, a bogie cover, and a streamlined shape. The flat plate with knife edge are installed to minimize the effect of boundary layer of wind tunnel for the train model. The aerodynamic drag reduction was more by a streamlined shape than by a bogie cover from a normal bogie. Based on the experimental results, the aerodynamic drag of HEMU-400x test train(6-car) was predicted. It is prediceted that More bogie cover could reduce more aerodynamic drag of the test train in replacement of normal bogies.

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