Hydrodynamic features of the impact of a hollow spherical drop on a flat surface

Abstract

Physical model experiments devoted to visualization of the collision of a hollow liquid drop with a flat surface are described. A new phenomenon is discovered, according to which the impact leads to the formation of a central counter jet of the liquid. A simple theoretical model is proposed for predicting the dynamics of the hollow liquid drop spreading on the surface. The results of calculations satisfactorily agree with the data of model experiments.