Behavior of a Droplet Impacting on a Horizontal Plate

抄録

The aim of this study is to investigate an unsteady behavior of a droplet impacting on a horizontal plate with poor wettability. Visualization techniques employed in this study include Computational Fluid Dynamics (CFD) and experimental one using a high-speed camera. The contact angle of the plate is varied by coating a water repellent material on its surface. This paper presents snapshots of bouncing motion of a droplet, the deformation rate at the impact on the plate, the coefficient of restitution, and flow in the droplet.