圆锥形火焰热辐射计算  

Thermal radiation calculation of conical flame

作　　者：沈景刚 季经纬[1] 王志一[1] 

机构地区：[1]中国矿业大学安全工程学院,江苏徐州221116

出　　处：《消防科学与技术》2017年第10期1348-1351,共4页Fire Science and Technology

摘　　要：利用蒙特卡洛法进行复杂物体表面之间的热辐射计算,采用小三角形单元贴合辐射源物体表面和接受辐射物体表面,将复杂表面之间的热辐射计算简化为小三角形单元之间的辐射计算。通过圆柱和水平微元面的辐射模型的验证计算表明,该方法求得的角系数与理论值的误差在5%以内,证明了这种方法的精确性。并将此方法用于圆锥形火焰与圆柱物体的表面辐射角系数的计算。Used Monte Carlo method to calculate the heat radiation between surfaces of complex objects. A small triangular patch was used to fit the surface of the complex combustion flame and the sur face of the objects which receive radiation, therefore, the complex radiation calculation model was transformed into the radiation calculation model among many small triangular surfaces. The calcula- tion of the radiation model between cylinder and horizontal micro plane showed that the error between the theoretical value and the angular coefficient obtained by this method was less than 5%. It was proved that this method is accurate. And finally, this method was used to calculate the radiation angular coefficients of conical flame and cylindrical objects.

关 键 词：热辐射 蒙特卡洛法 三角剖分 圆锥形火焰 

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]