房间通风管道对火灾烟气扩散的影响研究

Study on the Effect of Ventilating Duct on Smoke Propagation

为研究房间通风管道对火灾烟气扩散的影响,运用火灾动力学模拟软件FDS建立两相邻房间共用同一根送风管道,当其中一个房间发生火灾时,火灾烟气势必会通过通风管道扩散至临室。研究当门的开启状态、送风方式及火源位置发生改变时,火灾烟气通过通风管道进入邻室后,邻室的烟气层高度、烟灰浓度及烟气温度的变化。

To study the effect of ventilating duct on smoke propagation, two adjacent rooms were established by Fire Dynamics Simulation （FDS）.The two rooms were supplied by one common supply air duct. Once fire occurred in one of the two rooms, the fire smoke will propagate into the other room. Study on the smoke layer, soot concentration and smoke temperature when door＇ s open, air distribution pattern and the location of fire changed.