开发出了一套使用532 nm Nd:YAG激光器作为激光源,用于柴油喷雾浓度及粒径测量的测试系统,具有测量环节少,精度高,可以测量真实柴油喷雾的特点;使用该系统,获得了柴油撞壁喷雾的浓度及粒径分布图,发现了喷雾内部存在拟序结构.

A new system based on 532 nm wavelength Nd∶YAG laser, which is used in measuring concentration and drop diameter of diesel spray, has been developed in this paper. It has some advantages such as less configuration, high precision, and capacity in measuring real diesel spray. The 2 D concentration and drop diameter distribution is visualized by this system, and the approach correlation structure inside the spray is also discovered.