Experimental Study of the Internal/external Pressure Variation of TTX Travelling through a Tunnel

한국형 틸팅차량의 터널 주행시 실내/외 압력변화에 대한 실험적 연구

  • 윤수환 (서울대학교 기계항공공학부) ;
  • 곽민호 (서울대학교 기계항공공학부) ;
  • 이동호 (서울대학교, 기계항공공학부, 항공우주신기술연구소) ;
  • 권혁빈 (한국철도기술연구원) ;
  • 고태환 (한국철도기술연구원)
  • Published : 2009.04.30


When a train enters into a tunnel, a compression wave is generated by a front nose and a expansion wave is generated by a rear tail respectively. The interaction between pressure waves and the train makes the internal and external pressure of the train change dramatically. In this paper, we had measured the internal and external pressure variations of TTX and analyzed the pressure variations as the tunnel length. Also, the rate of internal pressure variations were investigated with the current airtight condition of TTX. In short tunnels, the internal and external pressure variation were not large because the superposition of pressure waves was not happened. In long tunnels, however, the rapid and large pressure variations were shown because of the superpositions between the same sort of pressure waves, such as expansion wave and expansion wave or compression wave and compression wave. In specific length tunnels, the pressure variation and the pressure variation rates were largely lessened because the compression wave and expansion wave were superposed.


  1. M.S. Howe, (1998), "Mach Number Dependence of the compressionwave generated by a high-speed train entering a tunnel", Journal of Sound and Vibration, Vol. 212(1), pp.23-26 https://doi.org/10.1006/jsvi.1997.1348
  2. Tsuyoshi Ishihara, Michio Utsunomiya, masahiro Okumura, Yutaka Sakuma and Takayuki Shimomura (1997), "An investigation of Lateral vibration caused by Aerodaynamic continuous force on high-speed train running within tunnels", Proceedings of World Congress on Railway Research E, pp. 531-538
  3. 박춘수, (2004), "고속열차가 터널내에서 받는 압력변동 특성 분석", 한국철도학회 2004년도 춘계학술대회 논문집, pp.690-695
  4. Hideo Kashimura, (2001), "Distortion of Compressible Wave Generated by Reflection of Propagating Expansion Wave at Open-end of Tube", Theoretical and Applied Mechanics Vol. 50, pp.365-370
  5. Takanobu Ogawa, (1997), "Numerical Investigation of three dimensional compressible flows induced by a train moving into a tunnel", Computers & Fluids Vol. 26 pp.565-585 https://doi.org/10.1016/S0045-7930(97)00008-X
  6. Matsuo, K., Aoki, (1997), "Entry compression wave generated by a high-speed train entering a tunnel", Processings of the 9th Aerodynamics and Ventilation of Vehicle Tunnels. BHR Croup Conference Series Pubilcation, No. 27, pp. 925-934
  7. 철도차량 안전기준에 관한 지침, 국토해양부고시 제2006-247호
  8. 남성원 (2004), "KTX차량 내외부의 압력변동 특성에 관한 연구", 한국철도학회논문집, 제7권 제1호, No. 6, pp. 26-31
  9. 권혁빈,(2000), "터널을 통과하는 고속철도차량에 의해 형성되는 비정상 유동장의 수치해석", 한국철도학회논문집, 제3권, 제4호, pp. 229-236