超细粉灭火剂爆炸抛撒仿真与灭火效能研究
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摘要
为提高高楼灭火的灭火效能、优化设计、降低灭火的成本,针对超细粉体的高楼灭火弹爆炸抛撒的过程和特征进行分析,利用AUTODYN软件对高楼灭火弹的爆炸抛撒过程进行仿真,提出了评估灭火效能的方法。根据爆轰产物等熵膨胀原理和流体动力学理论,通过对灭火剂抛撒各个阶段的理论分析,分析计算了灭火效能,估算灭火弹的灭火威力。建立了灭火剂爆炸抛撒的数学模型,提出了计算灭火剂抛撒半径方法和评估灭火威力的方法,对灭火剂灭火效能的研究有一定的参考意义。
In order to improve the high-rise fire-extinguishing efficiency,optimal design and reduce cost of fire-extinguishing,to analyze the process and characteristics about explosion scatter about superfine powder high-rise fire-extinguishing projectile,simulation the explosion scatters process of high-rise fire-extinguishing projectile by AUTODYN,and propose the method about estimate the fire-extinguishing power. According to the principle of detonation products isentropic expansion and the fluid dynamics,analysis and calculation extinguishing ability and estimate the fire-extinguishing power by theoretical analysis of extinguishing agent scatter in every stages. To establish the mathematical model of extinguishing agent explosion scatter,propose calculation method of extinguishing agent scatter radius and estimate the fire-extinguishing power,which has reference significance for the study of fire-extinguishing ability of extinguishing agent.
In order to improve the high-rise fire-extinguishing efficiency,optimal design and reduce cost of fire-extinguishing,to analyze the process and characteristics about explosion scatter about superfine powder high-rise fire-extinguishing projectile,simulation the explosion scatters process of high-rise fire-extinguishing projectile by AUTODYN,and propose the method about estimate the fire-extinguishing power. According to the principle of detonation products isentropic expansion and the fluid dynamics,analysis and calculation extinguishing ability and estimate the fire-extinguishing power by theoretical analysis of extinguishing agent scatter in every stages. To establish the mathematical model of extinguishing agent explosion scatter,propose calculation method of extinguishing agent scatter radius and estimate the fire-extinguishing power,which has reference significance for the study of fire-extinguishing ability of extinguishing agent.
引文
[1]叶明泉,韩爱军,马振叶.超细粒子及其复合技术在冷气溶胶灭火剂中的应用[J].南京理工大学学报,2005,29(2):236-239.
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[9]熊征,周朝晖,路野.一种基于切线的曲线直线拟合的矢量化算法[J].计算机仿真,2008,9(9):100-103.
[2]殷志平,潘仁明,曹丽英.超细磷酸铵盐微粒灭火剂与B类火作用的有效性研究[J].安全与环境学报,2007,7(4):125-128.
[3]李涛,王克印,张增军.灭火剂抛撒云图与弹体破片形状关系试验研究[J].科技通报,2010,7(4):603-605.
[4]周晓猛,姜丽珍,陈涛.超细粉灭火介质的表面特性及灭火性能[J].燃烧科学与技术,2009,6(3):214-218.
[5]A E Summer.Fire Extinguishing Compostion[R].GB,2337459,1999.
[6]David A V Morton.Fire Suppressant Powder[R].US,5938969,1998.
[7]尚晓江,苏建宇,王华锋.ANSYS/LS-DYNA动力分析与工程实例[M].北京:中国水利水电出版社,2006:135-138.
[8]杜力强,柴涛.超细干粉灭火技术探讨[J].机械管理开发.2008,(3):93-95.
[9]熊征,周朝晖,路野.一种基于切线的曲线直线拟合的矢量化算法[J].计算机仿真,2008,9(9):100-103.