CAJ | 학술논문

借助粒子动态分析仪PDA系统,开展了HAN基液体推进剂模拟工质喷雾特性的试验研究,分别观测了单孔圆柱形射流和双孔对撞射流在大气中的雾化特性,研究了喷射压力、喷孔直径及喷射模式对雾化性能的影响,定量测试了喷雾场轴向、径向雾化液滴的索特平均直径D_(32)和液滴速度v.结果表明,对撞射流与单股圆柱形射流相比,在喷雾场中下游空间里雾化液滴均匀度较高,液滴D_(32)和速度v易达到稳定.
차조입자동태분석의PDA계통,개전료HAN기액체추진제모의공질분무특성적시험연구,분별관측료단공원주형사류화쌍공대당사류재대기중적무화특성,연구료분사압력、분공직경급분사모식대무화성능적영향,정량측시료분무장축향、경향무화액적적색특평균직경D_(32)화액적속도v.결과표명,대당사류여단고원주형사류상비,재분무장중하유공간리무화액적균균도교고,액적D_(32)화속도v역체도은정.
The experiment of spray characteristics of simulated medium of HAN-based liquid propellant was carried out by use of Particle Dynamic Analyzer(PDA) systems. The spray characteristics of the cylindrical jet and impinging jet in the atmosphere were observed separately. In the experiment,influence of spray pressure,nozzle diameter and spray model on atomization was systematically analyzed,and the axial and radial distributions of droplets regarding Sauter mean diameter(D_(32))and droplets' velocity (v) were quantitatively measured. The results show that compared with the cylindrical jet, the atomized droplets of the impinging jet possess higher uniformity at the middle and lower spray field. D_(32) and v are easy to achieve stability.