The aerodynamic performance of air-shafts with different inner diameters in the railroad tunnel

철도터널 통풍공의 내경변화에 따른 공기역학적 성능

  • 김동현 (한국철도기술연구원 시설연구본부) ;
  • 강부병 (한국철도기술연구원 차량연구본부) ;
  • 신민호 (한국철도기술연구원 시설연구본부)
  • Published : 2001.11.01

Abstract

Purpose of the present study is to investigate the aerodynamic performances of air-shafts with different inner diameters in a single track tunnel for reducing pressure fluctuations and micro pressure waves. Three configurations of air-shafts with different inner diameters were examined for comparison of aerodynamic performances. Experiments were performed with a 1/61-scale moving model rig for the tunnel of 0.764 km length and the train of 4 cars per 1 unit. The results showed the reduction effect of the maximum pressure fluctuations in tunnel and micro-pressure waves radiating towards the surroundings from the tunnel exit according to the increase of the diameter of 10 air-shafts spaced equally.

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