靶式喷嘴雾化特性实验研究

对靶式喷嘴雾化特性用三维相位多普勒粒子分析仪进行了实验研究。测量结果显示，该靶式喷嘴雾化效果较好，喷雾中心粒度较小，粒度随气液质量比增大呈减小趋势，重力对喷雾场粒子速度分布有一定的影响。

EXPERIMENTAL STUDY ON ATOMIZING FLOWFIELD OF TARGET SPRAY NOZZLE

At target spray nozzle,high speed gas flow smashes the liquid film formed from jet impinging atomization into pieces. Atomizing flowfields at different vertical sections away from spray nozzle exit were measured by 3D PDPA system . The main respects measured are as follows:(1)The variation of particle mean velocity with Y ; (2) the proportion of particle number within different diameter ranges. The main results measured are as follows: (1) the target spray nozzle achieved good results; (2)atomized particle diameter decrease as ratio of air to water increases. (3)particle mean velocities are influenced by gravity