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An Experimental Study on Smoke Spread Using a Reduced-scale Subway Building Model  

Kim, Myung-Bae (한국기계연구원 에너지기계연구본부)
Choi, Byung-Il (한국기계연구원 에너지기계연구본부)
Publication Information
Fire Science and Engineering / v.22, no.2, 2008 , pp. 49-56 More about this Journal
Abstract
Smoke propagation for the Daegu Metro fire is reproduced by a reduced-scale model experiment. The three-story station building was modeled with 1/20-scale, and the tunnel connected to the platform was not completely modeled because of its length. To include the flow resistance the tunnel provides the mesh screens were used in the model. The fire scenario was selected based on the fire growth rate of the metro car seat where the fire initiated. The time when smoke arrived at each compartment in the station building was measured by thermocouples and visualization. Regarding fire ventilation, the air supply that has been accepted as conventional design in a subway metro building intensifies smoke spread. The results show that the whole building was filled with smoke in about 10 minutes in case of no ventilation.
Keywords
Smoke propagation; Metro fire; Smoke control; Reduced model; Fire ventilation;
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