A320客舱在低压环境下的火灾及烟气规律研究

Fire and smoke law of A320 cabin in low pressure environment

以空中客车A320系列飞机为研究对象,探究低压环境对飞机客舱火灾烟气规律。运用FDS数值模拟,对飞机发生火灾客舱内部烟气及温度的规律进行分析。结果显示,低压环境下,飞机客舱内部火灾热释放速率、温度以及CO浓度都有不同程度降低,峰值结束时间均提前。烟气沉降速度和横向蔓延速度加快,烟气浓度却有所降低,推断出烟气产生速率有所减缓。

Airbus A320 series aircraft is taken as the research object to explore the influence of low pressure on the smoke movement of fire. Using FDS numerical simulation, the law of smoke and temperature inside the cabin of the aircraft is analyzed. The results show that in a low-pressure environment, the fire heat release rate, temperature and CO concentration inside the aircraft cabin are reduced in varying degrees, and the peak end time is advanced. The smoke sinking speed and lateral spreading speed increase, but the smoke concentration decreases. It is inferred that the smoke generation rate has slowed down.