CLSVOF method to study consecutive drop impact on liquid pool

Abstract

Purpose – The purpose of this paper is to present a numerical approach for investigating different phenomena during multiple liquid drop impact on air-water interface. Design/methodology/approach – The authors have used the coupled level-set and volume-of-fluid (CLSVOF) method to explore the different phenomena during multi-drop impact on liquid-liquid interface. Complete numerical simulation is performed for two-dimensional incompressible flow, which is described in axisymmetric coordinates. Findings – During drop pair impact at very low impact velocities, the process of partial coalescence is observed where the process of pinch off is different than single drop impact. At higher impact velocities, phenomena such as bubble entrapment are observed. Originality/value – In this paper, a new approach has been developed to simulate consecutive drop impact on a liquid pool.