摘要
首先给出了几个与区域模拟基本思想相一致的假设，然后据此推导了区域模拟辐射换热的计算模型．本模型将火源假设为点火源；并假定包壳仅由两个表面组成，其中，上表面为顶篷和上部坚墙，而下表面为地板和下部竖墙．这一模型既考虑了吸收性介质对火源及壁面辐射的影响，也考虑了烟气主要成份对吸收性系数的影响．
Based on the basic idea of zone modeling method for building fires, a radiation heat transfer model is provided. In this model, the fire source is assumed to be a point source; and the enclosure is assumed to be made up of two surfaces, the ceiling and upper wall being the upper surface, while the floor and lower wall being the lower surface. Additionally, the effects of absorptive and emissive media on radiation of the fire source and each surface are considered, and the effects of smoke speces on absorption coefficients are also taken into account.
基金
国家自然科学基金
关键词
区域模拟
辐射换热
建筑物
火灾
换热
Building Fires Zone Modeling Radiation Heat Transfer
