| Title |
An Experimental Study of Smoke Movement in Tunnel Fires According to Ventilation Method |
| Keywords |
Tunnel fire ; 터널화재 ; Smoke movement ; 연기거동 ; Ventilation ; 환기 ; Froude scaling ; Froude 상사 |
| Abstract |
In this study, reduced-scale experiments were conducted to analyze smoke movement in tunnel fires according to vepntilation method. The 1/20scale experiments were carried out under the Froude scaling using gasoline pool fires ranging from 6.6 to 10cm in diameter corresponding to total heat release rate from 0.714 to 2.5kW. Temperatures near the ceiling were lowered by installing the vent, and much lowered by operating fan compared wiht the case without vent. In case of forced ventilation, the exhaust fan was more effective than the intake fan. Vertical temperatures at the upper part of the tunnel were also lowered by installing the vent. But, when suction fan was operated, temperatures at the lower part of the tunnel were higher than that without vent. |