以机载应用为研究背景,搭建了使用R22的闭式喷雾冷却实验系统,考察了加热表面在介质沸腾状态和临界失效状态的传热性能,为机载高热流密度武器热管理系统的设计提供参考.定义了表征液滴撞击、液膜流动、蒸发换热和沸腾换热的无量纲数,分别为雷诺数Re、韦伯数We、雅可比数Ja和无量纲温度ε,并给出了适用于沸腾换热和临界后失效状态的传热性能关联式,关联式结构简单,实验值与拟合值的相对误差均在土15％以内,满足航空工程设计计算要求.拟合过程中分析了各无量纲数对关联式精度的影响,得出在沸腾换热阶段,韦伯数We的影响不可忽略;雅可比数Ja较之无量纲温度ε更适合用来反映沸腾换热阶段流体和表面的温度变化;在过临界失效阶段主要影响传热性能的是韦伯数We.“,”A closed-loop experimental bench for airborne application with R22 as the cooling medium was established and heat transfer characteristics on the heating surface in the boiling region and the failure region were investigated,which provide reference for the design of thermal management system for airborne weapon with high heat flux.Four dimensionless parameters were defined,which were Renolds numberRe,Weber number We,Jacob number Jaand dimensionless temperatureε.And then the heat transfer correlations for boiling region spray cooling and failure region spray cooling were obtained.The deviations between the experimental values and the fitting values are all within ±15％ which satisfy the requirements of engineering design in aircraft.From the fitting process it can be deduced that in the boiling region the Weber number We could not be ignored.Compared with the dimensionless temperature ε,Jacob number Ja is preferred to reflect the temperature variation tendency of the droplets and the heating surface during the boiling heat transfer process.During the failure state the most significant heat transfer parameter is Weber number We.