| Title |
Numerical Simulation of Smoke Ventilation in Rescue Route and Cross Passage of Railroad Tunnel |
| Authors |
양성진(Sungjin Yang) ; 허남건(Nahmkeon Hur) ; 유홍선(Hong Sun Ryou) ; 김동현(Dong Hyeon Kim) ; 장용준(Yong Jun Jang) |
| Keywords |
터널화재 ; 환기 ; 제연 ; 유동해석 ; 전산유체역학 Tunnel fire ; Ventilation ; Smoke control ; Flow analysis ; Computational fluid dynamics |
| Abstract |
A transient 3-D numerical simulation was performed to analyze the fire safety in a railway tunnel equipped with a mechanical ventilation system. The behavior of pollutants was studied for the emergency operation mode of ventilation system in case of fire in the center of the rescue station and near the escape route. Various schemes of escape route con-struction for connection angle(45°, 90°, 135°) and slope(10°) were evaluated for the ventilation efficiency in the fire near the escape route. From the results, it was shown that the mode of the ventilation fan operation which pressurizes the tunnel not under the fire and ventilates the smoke from the tunnel under the fire is most effective for the smoke control in the tunnel in case of the fire occurrence. It was also shown that the blowing of jet fan from the rescue tunnel to the main tunnel should be in the same direction as the flow direction in the main tunnel arising from the traffic and the buoyancy. |