Wall Fire Behavior in the Dual Opening Compartment

[摘要] References(12)Cited-By(1)Wall fire behavior in the dual opening compartment, which has two openings, door and window, was investigated experimentally using a reduced scale model. Fire behavior in the dual opening compartment was characterized by the window effect. Window opening was exclusively used for gas outflow from compartment, because the neutral plane at the window was always below the window sill. Consequently no inflow air was observed at the window opening. So the neutral plane height at the door opening became higher than that for the case of single opening situation. The equivalent opening height was defined using the neutral plane height fraction to investigate the data of dual opening compartment fires.Remarkable difference between wall and floor fires in the dual opening compartment was observed in the behavior of smoke outflow from compartment. Smoke chiefly flew out from the window opening for the floor fire situation, while the smoke flew out from both door and window openings for the wall fire situation. This fact suggests that the flow pattern within the compartment could depend on the difference of these fire situations of wall and floor. Another interesting result is concerned with an oscillatory phenomenon. An oscillatory phenomenon was observed in the dual opening compartment fires as well as the single opening compartment fires. But this oscillation was observed only in the floor fire situation. No oscillation could be found for any ventilation condition in the wall fire situation. Probably that reason may be related to the temperature profile within a compartment. Because the temperature profile for the wall fire situation was considerably different from that for the floor fire situation. The relationship between the temperature profile within a compartment and fuel orientation may be a future problem.

[学科分类] 环境科学（综合）