Experimental research on the droplet impacting on the liquid film

Abstract

The flow phenomena such as spray，splash and especially the bell-like spray happening after a droplet impacts on the liquid film are observed in experiment. The relationship between the flow phenomena and the diameter and speed of the droplet, and the viscosity, the surface tension and the thickness of the film are probed. The condition for bell-like spray brought about after the collision of the droplet on the film is discussed.