锥形量热仪中材料点燃的数值模拟研究  

Numerical simulation on the ignition of material in cone calorimeter

作　　者：徐亮[1] 丁严艳[2] 

机构地区：[1]金华市消防支队,浙江金华321000 [2]杭州电子科技大学,浙江杭州310018

出　　处：《消防科学与技术》2010年第7期569-571,共3页Fire Science and Technology

摘　　要：根据锥形量热仪中热辐射均匀分布的特性,从一维热传导方程出发,应用简化的边界条件,推导了无量纲化的传热方程,通过数值模拟的方法计算得到无量纲点燃时间,利用幂指数线性拟合的方法得到了热薄型、热中型和热厚型材料的点燃时间公式,通过无量纲热辐射通量给出了各预测公式的适用范围。According to the uniform distribution of thermal radiation in cone calorimeter,and based on one dimensional heat conduction equation and simplified boundary condition,the dimensionless heat transfer equation is deduced,the dimensionless ignition time is calculated by numerical simulation,and formulae of ignition time for thermally thin,intermediate thermally thick and thermally thick materials are established,with each formula＇s applicable range based on dimensionless heat fluxes.

关 键 词：点燃模型 材料 传热方程 数值模拟 

分 类 号：X913.4[环境科学与工程—安全科学] TK121[动力工程及工程热物理—工程热物理]