有风条件下航空煤油池火燃烧特性的实验研究

在全尺寸热释放速率实验台的基础上,搭建有风条件池火实验平台,开展了不同风速条件下的航空煤油池火燃烧实验,实验所用正方形油盘的边长分别为0.2m、0.3m和0.4m,风速范围为0 m.s-1至4.99 m.s-1。实验结果表明,风速为0 m.s-1时航空煤油池火的燃烧速率随油盘尺寸增大而单调递增,实验值与理论值的差距随风速增大而减小。实验所得.m″windy/.ms″till与v/D呈线性关系,与前人结论一致,但实验所得参数与前人值不同。同尺寸油盘池火的热释放速率峰值来临时间随风速增大有减小的趋势;不同尺寸油池火的燃烧速率随风速增加而单调递增。对不同尺寸油池火的热释放速率峰值随风速的变化规律作了讨论。

Experimental study of aviation fuel pool fire combustion characteristics with wind

Rectangular aviation fuel pool fire experiments with wind were carried out in self-made experiment platform,based on ISO 9705 Standard Room.Three different sizes of pool fire,with side lengths of 0.2 m,0.3 m and 0.4 m,were used.Wind speed ranges from 0 m·s-1 to 4.99 m·s-1.The results show that,under quiescent ambient condition,the burning rates of aviation fuel increase with the increase of wind speed.The difference between experimental burning rates and the estimated values decrease with the increase of pool side lengths.The experimental m·″windy/m·″still values have linear relationship with v/D.For the fixed pool,with wind speed increasing,the arrival times of HRR peak have a decreasing trend,burning rates increase.The effect of wind on HRR peak of different pool fires is different.