个性化送风模式下客舱火灾阴燃排烟控制模拟

Simulation of Cabin Fire Smoldering Smoke Emission Control under Personalized Air Supply Mode

为有效控制飞机客舱火灾阴燃阶段烟雾和有毒气体在客舱内的扩散范围,以火灾阴燃阶段对人体危害较大的CO为研究对象,建立Boeing737经济舱模型,模拟发生小范围火灾阴燃时,普通送风模式与个性送风模式下,CO扩散范围的控制效果。采用NEV作为排污效率评价指标,得出在增加个性送风后,可以将火灾阴燃产生的烟雾和有毒气体控制在阴燃源附近的结论。所得结论为飞机客舱内发生小范围火灾阴燃时控制局部区域的烟雾和有毒气体提供参考。

In order to effectively control the smoke and toxic gas diffusion range in cabin fire smoldering stage,the Boeing737 economy cabin model was built.The CO that was harmful to human body during the smoldering phase of the fire was taken as the research object.Under the general air supply mode and the individual air supply mode,the control effect of CO diffusion range was simulated when smouldering was in a small scale fire.NEV(net escape velocity)was used as the pollutant discharge efficiency evaluation index.It is concluded that the smoke and poisonous gas produced by smoldering fire can be controlled in the vicinity of smoldering source after increasing the individual air supply.The conclusion provides reference for controlling smoke and toxic gas in local area when a small fire smashes in the cabin of an aircraft.