高大空间排烟系统可靠性分析论证
Reliability Analysis and Demonstration of Smoke Exhaust System in Large Space

文章针对某训练馆东侧场馆风管的温度分布进行了数值模拟研究。利用FDS软件，研究了火灾情况下的烟气蔓延规律和风管表面温度以及内部温度变化规律。结果表明：在火灾初期，烟气迅速上升并撞击顶棚后沿顶棚蔓延；风管下侧表面的温度逐渐升高，但温度均小于100℃，风管侧面距离火源垂直较近区域的温度值较高，风管表面区域温度约为80℃，排烟风管内温度值小于70℃，均小于风管变形的临界温度值。
This study conducts a numerical simulation analysis of the temperature distribution of air ducts in the east side of a training hall. Utilizing the FDS software, the study investigates the smoke spread patterns and the temperature variation of the surface and interior of the air ducts under fire conditions. The results indicate that in the initial stage of the fire, the smoke rapidly rises, hits the ceiling, and then spreads along it. The temperature on the lower surface of the air duct gradually increases but remains below 100？C. The temperature is higher in areas where the side surface of the air duct is vertically closer to the fire source, with surface temperatures around 80？C and internal temperatures of the exhaust ducts below 70？C, all of which are lower than the critical deformation temperature of the air ducts.