| Title |
The 1D-3D Simulation for Smoke Ventilationin a Rescue Station of a Railroad Tunnel under the Fire |
| Authors |
정재혁(Jae Hyuk Jung) ; 허남건(Nahmkeon Hur) ; 이정표(Jung-Pyo Lee) ; 김진곤(Jin Kon Kim) |
| Keywords |
터널화재 ; 환기 ; 제연 ; 유동 해석 ; 전산유체역학 Tunnel fire ; Ventilation ; Smoke control ; Flow analysis ; Computational fluid dynamics(CFD) |
| Abstract |
In the present study a 1D-3D numerical simulation was performed to analyze the fire safety in a rescue station of a long railroad tunnel equipped with a mechanical ventilation. The behavior of hot air was studied for the emergency operation mode of ventilation system in case of fire in the rescue station. The 1D simulation was carried out for entire tunnel region. Detailed 3D CFD simulation was performed for the rescue station area in the central region of the tunnel by using the result of the 1D simulation as the boundary condition of the 3D simulation. Various type of cross passage installation were evaluated for the prevention of smoke diffusion to suggest the optimized interval of the cross passages in the rescue tunnel. |