| 细水雾灭火的突变分析 |
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| 引用本文： | 杨立军,佟明羲,赵建波.细水雾灭火的突变分析[J].北京航空航天大学学报,2013,39(3):340-343. |
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| 作者姓名： | 杨立军 佟明羲 赵建波 |
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| 作者单位： | 北京航空航天大学宇航学院,北京,100191;北京航空航天大学宇航学院,北京,100191;北京航空航天大学宇航学院,北京,100191 |
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| 基金项目： | 国家自然科学基金资助项目(51078014) |
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| 摘 要： | 为了认识细水雾灭火机理,寻找细水雾作用下的火焰熄灭边界,采用非线性突变理论分析了细水雾灭火过程,推导出火焰能量势函数及火焰临界熄灭温度的表达式,得到了细水雾扑灭正庚烷油盘火的火焰熄灭边界.进行了细水雾针对正庚烷油盘火的灭火实验,实验结果验证了火焰熄灭边界的正确性.相比吸热过程,火焰熄灭温度受氧浓度的作用更为迅速.
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| 关 键 词： | 细水雾 火灾 突变理论 熄灭边界 |
| 收稿时间： | 2012-02-15 |
Catastrophe analysis of the water mist fire suppression process |
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| Yang Lijun Tong Mingxi Zhao Jianbo.Catastrophe analysis of the water mist fire suppression process[J].Journal of Beijing University of Aeronautics and Astronautics,2013,39(3):340-343. |
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| Authors: | Yang Lijun Tong Mingxi Zhao Jianbo |
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| Institution: | School of Astronautics, Beijing University of Aeronautics and Astronautics, Beijing 100191, China |
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| Abstract: | To understand the water mist fire suppression mechanism and find out the extinguishment boundary, the water mist fire suppression process was analyzed with a non-linear catastrophe theory. The expressions of the flame energy potential function and the flame critical extinguishing temperature were deduced. The extinguishment criterion for the n-heptane pool fire was obtained. The extinguishment boundary is verified by conducting the water mist fire suppression experiments on n-heptane pool fire. The effect of oxygen concentration on the flame extinguishing temperature is quicker than that of heat absorption. |
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