Numerical Study of Reduction of External Pressure Variation and Micro-Pressure Wave for high-speed train in tunnel

고속열차의 터널 주행시 실외 압력 변화 및 미기압파 저감을 위한 수치해석적 연구

  • 이정욱 (서울대학교, 기계항공공학부) ;
  • 윤수환 (한국철도기술연구원, 차세대고속철도 기술개발사업단) ;
  • 곽민호 (서울대학교, 기계항공공학부) ;
  • 이동호 (서울대학교, 기계항공공학부, 항공우주신기술연구소) ;
  • 권혁빈 (한국철도기술연구원, 고속철도연구본부)
  • Published : 2011.10.20

Abstract

When a train passes a conventiaonl tunnel at high speed, external pressure variation problem arises. It is known that this issue can be reduced by control the tunnel length. We studied the variances of external pressure variation within the tunnel, by altering length of the dummy tunnel duct. We also studies the variances of micro-pressure waves at the exit of tunnel, by altering surface area of dummy tunnel duct. For analyzing this train-tunnel relation problem, axisymmetric steady compressible flow solver was used.

Keywords