Journal of computational fluids engineering (한국전산유체공학회지)

Korean Society of Computational Fluids Engineering (한국전산유체공학회)
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3D GEOMETRY EFFECTS ANALYSIS ON PROPAGATION OF PRESSURE WAVE GENERATED BY HIGH-SPEED TRAIN TRAVELING IN A TUNNEL USING CFD

3차원 형상을 고려한 고속철도에 의한 터널내 압력파 전파의 CFD 해석

  • Shin, D.Y. (School of Mechanical and Aerospace Engineering, Seoul Nat'l Univ.) ;
  • Lee, S.G. (School of Mechanical and Aerospace Engineering, Seoul Nat'l Univ.) ;
  • Oh, H.J. (School of Mechanical and Aerospace Engineering, Seoul Nat'l Univ.) ;
  • Kim, H.G. (School of Mechanical and Aerospace Engineering, Seoul Nat'l Univ.) ;
  • Yoon, S.H. (Korea Railraod Research Institute) ;
  • Kim, C.J. (School of Mechanical and Aerospace Engineering, Seoul Nat'l Univ.)
  • 신대용 (서울대학교 기계항공공학부) ;
  • 이상건 (서울대학교 기계항공공학부) ;
  • 오현주 (서울대학교 기계항공공학부) ;
  • 김홍근 (서울대학교 기계항공공학부) ;
  • 윤수환 (한국철도기술연구원) ;
  • 김찬중 (서울대학교 기계항공공학부)
  • Received : 2011.12.01
  • Accepted : 2012.11.11
  • Published : 2012.12.31
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Abstract

Research has importance in proposing the design of a tunnel with a vertical vent to secure passengers in a comfortable environment and safe against pressure. Using several analysis methods, the magnitude of the pressure induced by the vertical vent in the tunnel can be analyzed. In addition to the 3-dimensional method, the 2-dimensional method and the 2-dimensional axis-symmetric method are also used to analyze the strong and weak points of each so that the optimum analysis method can be obtained. As a result, it appears that the 2-dimensional axis-symmetric method is the most suitable in analyzing tunnel pressure consider to accuracy and time effective aspect. Also, the 3-dimensional method is disadvantageous in that it takes longer in calculating results, but is more effective in predicting phenomena around the vertical vent in the tunnel.

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References

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