The Numerical Analysis off the Flow-field Around the Korean Tilting Train Express

한국형 틸팅 열차 주위 유동장 수치 해석

  • 윤수환 (서울대학교 기계항공공학부) ;
  • 김태윤 (서울대학교 기계항공공학부) ;
  • 고태환 (한국철도기술연구원) ;
  • 권혁빈 (한국철도기술연구원) ;
  • 이동호 (서울대학교 기계항공공학부)
  • Published : 2004.09.01

Abstract

Numerical analysis of aerodynamic characteristics was differently performed according to the running situation of the Korean Tilting Train eXpress(TTX) that would be introduced for an improvement in efficiency of the used railroad track. Fluent 6.0 was used for the analysis of Non-tilting case, Tilting case and Passing-by case with the model of TTX. As a result, the aerodynamic drag had little difference between Tilting and Non-tilting case. However, pressure contour under the train of Tilting case was not symmetry because the gap between a train and the ground was different at both sides. In Passing-by case attraction and counterattraction occurred alternately and affected to the opposite train. When two trains were side by side, the maximum attraction was generated especially. Through an analysis of pressure wave in tunnel a large variation of pressure was generated by the bluff nose of TTX. The results in this study would be good data for the aerodynamic characteristic on TTX and provide important information to judgment of running safety.

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