大庆RP-3航空煤油热物性分析

1引言在超燃冲压发动机的实际运行过程中,吸热碳氢燃料通常被当作冷却剂去吸收气动加热和燃烧施于机体的热量,其温度和状态随着飞行马赫数的不同而发生变化。与液态燃料相比,在加热条件下,燃料的热物理特性及其喷注、混合和燃烧等过程有很大的不同,例如,临界点附近燃料的热力学

Analysis of thermophysical properties of Daqing RP-3 aviation kerosene

To investigate the thermophysical properties of endothermic hydrocarbon fuels,the method of fuel surrogate and principle of the extended corresponding states(ECS) were reviewed briefly.A three-species surrogate consisting in mole of 49% n-decane,44% 1,3,5-trimethylcyclohexane,and 7% n-propyl-benzene was selected to simulate the thermophysical and transport properties of Daqing RP-3 aviation kerosene.A new method has been proposed to predict the mass flow rates of a supercritical fluid through a sonic nozzle.Agreement was obtained when comparing the calculated flow rates with measurements.