摘要
为了对大型储罐火灾特性进行全面研究,采用数值模拟的形式研究5 000 m3柴油储罐全表面火灾特性,研究集中在热释放速率、热辐射强度、罐顶温度和火焰温度。模拟结果表明:火灾热释放速率很快达到稳定状态,稳定值在772 MW左右;对于距地面高度小于等于8 m的平面,热辐射强度随着距罐壁距离的增加先逐渐增大,然后减小;对于距地面高度大于等于12 m的平面,热辐射强度随着距罐壁距离的增加而减小;顶部罐壁的温度在3 min之后就达到了最高温度,大约在740℃左右;沿着火焰中心轴线,从下向上,火焰温度先逐渐增加,然后逐渐减小。
In order to study the fire characteristics of large storage tanks in an all-round way, the fire characteristics of 5 000 m3 diesel tank were studied by numerical simulation. The research focused on the heat release rate, the thermal radiation intensity, the top temperature of the tank and the flame temperature. The simulation results showed that： the heat release rate of the fire quickly reached the stable state, and the stability value was about 772 MW. For the plane with the height less than 8 m, the thermal radiation intensity increased gradually and then decreased with the increase of distance; For the plane with the height greater than or equal to 12 m, the thermal radiation intensity decreased with the increase of distance; The tank top wall temperature reached the highest level after 3 min, about 740 ℃; Along the axis of the flame center, the flame temperature increased gradually at first, and then gradually decreased with the increase of height.
作者
张日鹏
ZHANG Ri-peng(Sinopec Qingdao Research Institute of Safety Engineering, Shandong Qingdao 266071, China;State Key Laboratory of Safety and Control for Chemicals, Shandong Qingdao 266071, China)
出处
《辽宁化工》
CAS
2018年第6期503-507,共5页
Liaoning Chemical Industry
基金
国家科技支撑计划课题(2015BAK37B03)资助
重点研发计划课题(2016YFC0801306)
自然科学基金(51574210)
关键词
数值模拟
热释放速率
温度
热辐射强度
numerical simulation
heat release rate
temperature
thermal radiation intensity
