摘要
建立FDS数值模型模拟障碍物作用下细水雾抑制熄灭受限空间油池火的过程和机理,分析开启细水雾后障碍物周围的温度、火焰、水蒸气等的变化情况,讨论障碍物作用下细水雾抑制油火燃烧的有效性。结果表明,在障碍物处火焰膨胀并产生很多大的气流漩涡,这是细水雾与热烟气及障碍物相互作用的结果;细水雾受热蒸发得到的水蒸气易于达到较高浓度从而抑制熄灭障碍物下的残存油火。
The FDS numerical model is built to simulate the process and mechanism of water mist extinguishing oil tank fire with obstacles in limited space. The variability of temperature, flame, water vapor around the obstacle after water mist operating are analyzed, and the effectiveness of water mist to restrain the oil fire combustion is discussed. Results show that flame expands around the obstacle and produces a lot of big air vortex, which is the result of the interaction of water mist, hot flue gas and obstacle; water vapor from the evaporation of the water mist can easily achieve a high concentration and extinguish the oil fire under the obstacle.
出处
《消防科学与技术》
CAS
北大核心
2010年第6期466-469,共4页
Fire Science and Technology
基金
国家自然科学基金(50974055)
教育部长江学者和创新团队发展计划(IRT0618)
河南理工大学青年基金(Q2008-33)
