초록 close

Fire behavior is dependent on combustible conditions such as fire load and ventilation factor in fire model and its prediction is a part and basic element of performance based design for fire resistance. To verify the effect of ventilation factor to fire behaviour in this study, we performed various ventilation controlled fire tests -from 0.02 to 0.30- with the same fire load density in a 3/10 Reduced-scale model of a standard ASTM enclosure. In consequence, on the first, fire temperature is characterized with ventilation factor and decreasing opening areas results in higher peak temperatures and a faster decay phase. Second, heat fluid throughout compartment by increasing fire temperature results in higher temperatures in case of decreasing ventilation factor in same position. On the third, two models which have different opening setup for the same ventilation factor result in similar to fire behavior with time step and the more opening number under ventilation controlled condition and the larger facing area outer part in fuel controlled fires, the lower temperature in inner space.