用激光全息及图像处理技术,研究了双股互击式喷嘴的雾化性能。实验发现,喷嘴的撞击夹角增大、孔径比减小、两射流的动量比减小均会使喷雾的破碎长度和液滴直径减小。在初始雾化区域,液膜和液丝的速度与射流的速度基本相同,液滴的运动速度略小于射流速度。通过实验数据的分析整理,获得了喷雾的索特尔平均直径的经验公式。 Using laser holography and image processing technology, the atomization performance of double-strand impact nozzle was studied. It was found that the impact angle of the nozzle increased and the aperture ratio decreased. The reduction of the momentum ratio of the two jets reduced the length of the spray and the droplet diameter. In the initial atomization zone, the velocities of the liquid film and the liquid filament are almost the same as those of the jet, and the velocity of the droplets is slightly less than the jet velocity. Through empirical analysis of the experimental data, we obtained the empirical formula of the Soxhlet average diameter of the spray.