计算机模拟室内火灾性状的探讨

Study on the Computer modeling of the Properties Of Indoor fire

根据室内火灾热平衡方程以及与其相关的理论,对室内火灾条件下的辐射热量和温度进行了计算。应用计算机模拟技术,重点讨论了实际室内火灾下的温度——时间曲线随火灾载荷、开口因子、开窗率、墙壁材料导温系数、墙壁材料导热系数这些影响参数变化而变化的规律。引入了等效时间的概念,以等效时间为参考来判定温度对建筑物的损伤程度,并对建筑防火设计提出了相应的建议。

In this paper, a methodology for calculating the quantity of heat and the temperature of indoor fires is presented. The methodology is based on the energy equation of indoor fires and other interrelated theories. Through using some computer imitate technology, the stress of this paper is the curve of temperature and time on actual indoor fires for study the varying regularity of the curve which is leaded to by the fire load, the open factor, the rate between the window's area and the total area of room, and the coefficient of conduction of heat and temperature of the wall. At last, a parameter named 'equivalent time' is used to evaluate the damage of the construction structure, and some opinions for the prevention of building fire and presented.