燃烧拖曳与辐射影响下压缩空气泡沫的铺展运动与抑制火焰机理

化工园区储罐的初期火灾易快速发展为全液面火灾、群罐火灾，航空母舰加油坞、舰载机中储藏、携带的航空煤油火灾威胁大。目前储罐、池火灭火事故处置指挥难度大，缺少科学的辅助决策支持。. 压缩空气泡沫是国内外大型油罐、航空母舰灭火的高效灭火剂。国内外已有相关研究主要集中于泡沫性能参数或灭火工程参数，灭火理论模型较为简单，但缺乏将泡沫的非牛顿粘性流体的属性特征，结合流动、传热、传质、燃烧的耦合过程，综合考虑进行研究。. 因此，本项目拟针对压缩空气泡沫灭液体火，分析非牛顿粘性泡沫流体、火焰、燃料之间非稳态传热、流动与燃烧的关键科学问题，揭示燃烧火焰的拖曳效应与热辐射反馈对泡沫铺展行为的影响机制，分析泡沫铺展过程中火焰拉伸速率的变化特征，给出泡沫抑制燃料输运的机理与燃烧熄灭的临界条件与特征参数。项目研究对于新型泡沫灭火剂的研制开发、性能评价，以及灭火标准、辅助决策的制定，具有极其重要的实际意义。

The early fire of the storage tanks in the chemical industry park can easily develop into a full liquid level fire or a group tank fire. The fire caused by the jet fuel carried in the aircraft hangar poses a great threat to a carrier. Up to now, tank or pool fire was mostly extinguished without effective mitigation method and scientific support.. Compressed air foam is a new effective extinguishing agent. The available research has mainly focused on foam performance characteristics or engineering parameters. The theoretical model is relatively simple, however lacking the comprehensive consideration of the characteristics of non-Newtonian viscous fluids, the coupling process of flow, heat and mass transfer and combustion.. Therefore, aimed at the compressed air foam to extinguish liquid fuel fires, this project will analyze the key scientific issues of the non-steady-state heat transfer, flow, and combustion between the non-Newtonian viscous foam, flame, and fuel. And reveal the drag effect and thermal radiation feedback from the flame upon the foam spreading behavior, analyze the flame stretch rate during the foam spreading, and give the inhibition mechanism of hindering the fuel transport, as well as the critical conditions and characteristic parameters at extinguishing. The project research has extremely important practical significance for the research and development of new foam agents, performance evaluation, and the formulation of fire extinguishing standards and auxiliary decision-making.