Experimental study of successive collision of two water droplets with a solid

The collision of two successive droplets with a solid is investigated experimentally by means of a flash photographic method. The pre-impact diameters of two droplets are 0.56 mm and 0.45 mm. The impact velocity of droplets is approximately 2.7 m/s. The spacing between the two droplets is varied as a parameter. The physics of interaction phenomena between two droplets on the solid is studied from an experimental viewpoint.