This paper explains atomization mechanism of water mist and describes the relations of aerosol particle size distribution features by applying Rayleigh-Taylor instability and Kelvin-Heinholtz instability,analyzes main characteristic parameters of water mist fire-sprinkling nozzle,and explores measuring methods of characteristic parameter of water mist fire-sprinkling nozzle,which has provided certain guidance for developing water mist fire-sprinkling nozzle with high performance.%运用Rayleigh-Taylor不稳定性和Kelvin-Heinholtz不稳定性解释了细水雾的雾化机理并描述了雾化颗粒尺寸分布特性的关系式,分析了反映细水雾灭火喷嘴灭火性能的主要特征参数,探析了细水雾灭火喷嘴特征参数的测量方法,为今后研发高性能的细水雾灭火喷嘴提供了一定指导。
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