关键词: 喷嘴;收敛扩散喷管;雾化;几何形状;特性

Abstract: With the view of application,a new method modified for flowpath surface area of Laval nozzle is proposed in order to adjust spray angle. The mechanism of adjustment is based on the fact that angular momentum law is not to be obeyed by liquid flow in divergent flowpath of Laval nozzle and that spray angle is independent on geometrical characteristic of pressure atomizing injector. This is a viable method to achive desired spray angle value. Its effectiveness is demonstrated by the results of the experiments.

Key words: Nozzle;Convergent-Divergent nozzle;Atomization;Geometric form;Characteristic