Abstract
Needless to say, it is important for the analysis of building fire to estimate various flows in fire. In this report, we took up fire plume and door jet, as the very important flows to characterize building fire and presented a method to evaluate each of them.
As regards ambient air entrainment to fire plume and door jet, the models are based on the results of Yokoi's analyses on “upward current above point heat source”.
As regards flows through doorways in buildings, we first classified the flow patterns which can be induced in actual fire according to the temperature and pressure conditions of the both side spaces of the doorway, and gained the expressions for the flow rates using static pressure of each room at the level of the floor on 1st storey. And then we proposed a method to obtain the pressures by solving flow-control equations.
