燃油喷嘴气液两相流雾化特性研究

以空气、水为工质，利用马尔文粒度分析仪对气液两相流雾化器喷嘴的雾化特性进行了详细的实验研究。测量了气、液两相流不同入口压力比条件下通过喷嘴后形成的液体雾化粒子的粒径分布，详细讨论分析了气、液两相压力及进气、进液方式对喷嘴雾化效果的影响，得出了喷嘴雾化过程中气液两相流量与气液两相压力之间的变化规律和最佳雾化原则，并对喷嘴的雾化机理进行了探讨。

Investigations of Spray Painting Processes Using an Airless Spray Gun

This paper presents experimental and numerical studies on spray painting processes by using airless spray guns for ship painting. A computational fluid dynamics code was applied to calculate the flow field and the droplet trajectories. Droplet size distributions and droplet velocities as necessary inlet characteristics for the simulations were experimentally obtained using a Spraytec Fraunhofer type particle sizer and laser-Doppler anemometry. Effects of shoreline winds and painting distance on the transfer efficiency and on the paint film thickness distributions on the target were numerically studied.