风向对建筑火灾烟气浓度中心位置分布的影响研究

Influence of Wind Direction on Distribution of Central Location of Smoke Concentration in Building Fire

以某建筑发生火灾为模拟背景,应用火灾动力学软件FDS,对火灾进行模拟与分析。分析了不同风向下的烟气浓度中心位置的分布状况,研究表明,烟气浓度中心离着火面的水平距离与高度、风向等都有关系,顺风方向烟气浓度中心的水平偏移量相对其它风向最大,偏移最远。研究结果为实现灭火救援和人员疏散提供了理论依据。

In order to simulate the fire in a building, the fire dynamics software FDS was used to simulate and analyze the fire. The distribution of the central position of the smoke concentration at different downwinds was analyzed. The study showed that the horizontal distance of the smoke concentration center fl＇om the fire surface is related to the height and the wind direction, and the horizontal offset of the smoke concentration center in the downwind direction is relative to other The wind direction is the largest and the most distant. The research results provide a theoretical basis for the implementation of firefighting, rescue and evacuation.