Experimental Study on Flame Trajectory in Building External Walls Fire

건축물 외벽화재시 Flame Trajectory 추정을 위한 실험적 연구

In the event of a fire on the outer walls of an architectural structure, through real scale experiments with the purpose of estimating the Flame Trajectory, the behavior and risks of expanded combustion to an upper architectural compartment of the Fire Plume Ejected from an Opening according to changes in the aspect ratio of the opening were examined. The results showed that the more the heat release rate of the fire source increased, the heat capacity of the Fire Plume Ejected from the Opening also increased, and for the case of heptane when compared with methanol or ethanol, the results showed a trend for a significant amount of unburned gas to remain. The results also showed that the larger the aspect ratio was, the more likely it was for the Flame Trajectory to approach the outer walls and rise up. In each of the experiment conditions, as the flame rose from the lower part of the wall to the upper part of the wall, a steady decrease was shown for the temperature distribution. Also by quantitatively analyzing the amount of unburned gas that remained, a method to estimate the temperature of the Fire Plume Ejected from an Opening for a traverse opening was implemented.