离心喷嘴液雾特性沿空间变化的研究

 通过激光散射技术,测量了离心喷嘴下游液雾特性（液雾平均尺寸、尺寸分布指数）沿径向距离及沿倾斜方向的变化,建立了相应的物理模型,进行了计算。计算结果与试验数据相符很好,表明本文提出的模型的合理性。

INVESTIGATION ON THE SPATIAL VARIATION OF SPRAY CHARACTERISTICS OF PRESSURE SWIRL ATOMIZERS

The variations of spray characteristics （mean diameter and drop size distribution parameter） along radial distance and slant direction downstream of a pressure swirl atomizer have been measured. The corresponding analytical model has been proposed and the predictions of these variations have been made. The predictions agree very well with experimental data.It is shown that the Sauter Mean Diameter and drop size distribution parameter always increase with radial distance, but change very little along slant direction. The results show that it is very important to make the alignment of the laser beam to be in the same plane as the injection center line is, while it is not essential to adjust the laser beam to be perpendicular to the injection center line. The agreement between the experimental data and the predictions by the proposed model verifies the applicability of the model. Certainly it can be used to predict more complicated spray situation with some extensions.