摘要
利用烟火运动场模型(FDS)模拟室内火灾过程,研究了通风开口大小对室内燃烧状况的影响,发现一定房门开度下,燃烧状况会发生周期性转换;利用线性拟合确定了房门处的最大质量流量mmax与通风因子AH间的比例系数。通过研究指出,房门突然打开后间歇出现的两次回燃现象,可能对进入房间灭火的人员构成严重威胁,在灭火实践中应该引起高度重视。
This paper simulates room fire with field model FDS and studies the influence of ventilation condition on indoor fire. Combustion situation can convert periodically under a certain door opening. The door scale coefficient between maximum mass flux m(max)and ventilation factor AH was computed with linear regression. Results indicate that the second backdraft will threaten the firemen who enter room for fire fighting and the great attention should be paid to it.
出处
《自然灾害学报》
CSCD
北大核心
2004年第5期80-84,共5页
Journal of Natural Disasters
基金
哈尔滨工业大学跨学科交叉性研究基金资助项目(HIT.MD2001.33)
关键词
室内火灾
场模型
FDS
通风开口
燃烧状况
周期转换
烟气二次回燃
room fire
field model
FDS
ventilation orifice
combustion situation
periodic conversion
second smoke backdraft
