预测单个火灾房间内温度场分布的多层区域模型  

Multi-layer Zone Model for Predicting Temperature Distribution in a Fire Room

作　　者：陈晓军[1] 杨立中[1] 邓志华[1] 范维澄[1] 

机构地区：[1]中国科学技术大学火灾科学国家重点实验室,合肥230026

出　　处：《燃烧科学与技术》2004年第6期544-548,共5页Journal of Combustion Science and Technology

基　　金：国家重点基础研究专项经费资助项目(2001CB409603);国家自然科学基金重点资助项目(50323005).

摘　　要：建立了一种预测单个室内火灾发展的多层区域模型(multi layerzonemodel).整个火灾房间被划分成任意多个水平分布的区域,假设每一层内的物理化学参数分布均匀,通过质量守恒、能量守恒等建立每一层的控制方程.介绍了模型中应用的火灾模型,包括燃烧、流动和传热模型.利用Runge Kutta积分方法得到每一层内气体温度随火灾发展过程的变化.模型预测结果和Steckler实验对比表明模型具有较好的准确性.A multi-layer zone model is developed to predict fire growth in a single room. The fire room is divided into an arbitrary number of horizontal layers, in which the temperature and other physical properties are assumed to be uniform. The principal equations for each laminated horizontal layer are derived from the conservation equations of mass and energy. The implemented fire sub-models are introduced, including combustion, fluid flow and heat transfer models. Combined with these sub-models, the zone equations for the gas temperature of each layer are solved by Runge-Kutta method for each time step.With the comparison between the results of the sample calculations and the experiments conducted by Steckler et al, a good agreement between experimental prediction and model one is obtained.

关 键 词：室内火灾 多层区域模型 火灾模型 

分 类 号：TK16[动力工程及工程热物理—热能工程]