摘要
采用计算流体动力学方法对不同风速条件下的井喷失控喷射火进行数值模拟,研究风速变化对井喷失控喷射火温度场、热辐射场、火焰高度及伤害半径的影响。结果表明：喷射火高度在风力0~2级时基本不变,风力2~8级时呈双曲线规律降低;伤害范围在无风条件下呈近似圆形分布,在有风条件下呈近似椭圆形分布;随风速增大伤害半径存在一个峰值点,危险区伤害半径峰值在1~2级风之间,致死区、重伤区、轻伤区伤害半径峰值在2~4级风之间。
Blowout of control jet fire under different wind speed was numerically simulated by way of CFD,and the influence of wind speed on the temperature field,thermal radiation field,the flame height and the injury radius of blowout jet fire.The results show that the jet fire height is almost the same between wind scale 1 and 2,and the height reduces between wind scale 2 and 8 along the hyperbolic law.The injury range has a circular distribution in the absence of wind conditions and elliptical distribution in windy conditions.There is a peak value of the injury radius while wind speed increases.The peak value of dangerous region radius appears between wind scale 1 and 2.The peak value of radius of deadly region,serious injury region,and minor injury region appear between wind scales 2 and 4.
出处
《消防科学与技术》
CAS
北大核心
2010年第12期1046-1051,共6页
Fire Science and Technology
关键词
井喷失控
温度场
火焰高度
伤害半径
数值模拟
风速
out-of-control blowout
temperature field
fire height
dangerous region radius
numerical simulation
wind speed
