RP⁃3航空煤油与其模型燃料雾化特性的对比试验

In order to obtain the atomization characteristics of RP⁃3 kerosene and its surrogate fuel, the atomization characteristics (including the atomization cone angle, atomized particle size, droplet velocity) of RP⁃3 kerosene and its surrogate fuel (14% n⁃decane/10% n⁃dodecane/30% iso⁃cetane/36% methylcyclohexane/10% toluene, mole fraction) were experimentally tested and compared in the laser test platform of fuel nozzle atomization at the conditions of relative injection pressures of 200, 400, 600, 800 kPa.The results showed that with the increase of relative injection pressure, the atomization cone angle and droplet velocity of RP⁃3 kerosene and its surrogate fuel increased gradually, but the value of Sauter mean diameter (SMD) decreased.Meanwhile, with the increase of the axial distance from the nozzle outlet, the SMD value and droplet velocity of RP⁃3 kerosene and its surrogate fuel decreased gradually.Under different relative injection pressures, the atomization cone angle and droplet velocity of the surrogate fuel were slightly higher than those of RP⁃3 kerosene, and the SMD value was slightly lower.However, the small difference indicated that the atomization characteristics of the surrogate fuel had a high similarity with RP⁃3 kerosene.