有风情况下池火灾视角因子的计算

石油化工高等学校学报 ›› 2008, Vol. 21 ›› Issue (3): 68-70.

有风情况下池火灾视角因子的计算

孟亦飞, 蒋军成, 王彦馥

南京工业大学安全工程研究所,江苏南京210009

收稿日期:2007-09-16 出版日期:2008-09-20 发布日期:2017-06-28
作者简介:孟亦飞(1982-),男,江苏姜堰市,在读博士
基金资助:
国家“十一五”科技攻关课题资助项目(2006BAK01B03)

View Factor Calculation for Pool Fire With Cross Wind

MENG Yi-fei, JIANG Jun-cheng, WANG Yan-fu

Institute of Safety Engineering, Nanjing University of Technology, Nanjing Jiangsu 210009,P. R. China

Received:2007-09-16 Published:2008-09-20 Online:2017-06-28

摘要/Abstract

摘要： 以视角因子的基本计算理论为基础对有风情况下池火灾视角因子的计算问题进行研究。根据几何
关系,推导了有风情况下池火灾辐射面对周围任意位置接受点视角因子计算关键参量的相关公式。进一步对池火
灾辐射表面进行了合理的离散化,推导出视角因子的数值计算公式,并用VB6.0编制了任意风速下池火灾周围任意
点视角因子的计算公式。通过实例计算发现,在计算无风情况下池火灾视角因子时的计算结果与理论模型相差不
大,计算结果可信,同时解决了目前经验模型无法解决的有风情况下池火灾视角因子的计算问题。

关键词: 视角因子 , 池火灾 , 辐射 , 数值计算

Abstract: On the base of basic theory of view factor, the view factor computation technology of pool fire with cross wind was studied. Related formulas for key parameters of view factor calculation were deduced according to the geometry topology, and further, the radiation surface of pool fire with cross wind was reasonably separated to establish the numerical computation formula of view factor. A procedure was developed using VB 6.0 for calculating view factor of pool fire with cross wind. From samples calculation, it was found that the procedure is reliable for pool fire without cross wind by comparing the result with what from theoretical model, and the new method can also effectively conquer the empirical model's shortcoming: incapable of calculating the view factor of pool fire with cross wind.

Key words: View factor , Pool fire , Radiation , Numerical computation

孟亦飞, 蒋军成, 王彦馥. 有风情况下池火灾视角因子的计算[J]. 石油化工高等学校学报, 2008, 21(3): 68-70.

MENG Yi-fei, JIANG Jun-cheng, WANG Yan-fu. View Factor Calculation for Pool Fire With Cross Wind[J]. Journal of Petrochemical Universities, 2008, 21(3): 68-70.