Interaction phenomena of two water droplets successively impacting onto a solid surface

This study is concerned with the deformation behaviors of two droplets impinging successively onto a solid. Photographic means is used to understand the physics of the interaction phenomena between the two droplets. Water droplets of diameters between 0.39 and 0.65 mm with impact velocities ranging from 2.0 to 5.0 m/s are examined. The temperature of the solid surface is set at 25, 300 and 500 degrees C. The effects of solid surface temperature, droplet impact velocity and time interval between successive discharges on the collision behavior of the two successive impinging droplets are studied. (C) 2007 Elsevier Masson SAS. All rights reserved.