弹道学报Issue(4)：82-87,6.
对撞式喷嘴在模拟燃烧室内喷雾特性研究
Spray Characteristic of Impinging Nozzle in Simulated Chamber
摘要
Abstract
To research the spray characters of impinging nozzle in the combustion chamber,3D phase-Doppler particle analyzer(PDA)was used to measure the spatial distribution of spray field’s parameters in the simulated combustion chamber.The change rules of mean diameter,axial velocity and radial velocity of the atomized droplets under different inj ection pressures were inves-tigated.The results show that,the greater the injection pressure is,the smaller the mean diameter (D30 ) is,and the more obvious the normal distribution features become.With the spray developing downstream,the average of the axial velocity tends to be low.Less axial velocity loss appears for more inj ection pressure on the section far away from the nozzle.The quantitative dis-tribution of the radial velocity trends toward a narrow speed area while the distance between the measuring point and the nozzle increases,and greater inj ection pressure makes more obvious feature.关键词
撞击式喷嘴/雾化/液滴/模拟燃烧室/喷雾场Key words
impinging nozzle/atomization/droplet/simulated chamber/spray field分类
航空航天引用本文复制引用
刘焜,余永刚,赵娜..对撞式喷嘴在模拟燃烧室内喷雾特性研究[J].弹道学报,2014,(4):82-87,6.基金项目
教育部博士点基金资助项目(20113219110024) （20113219110024）
