Simulation of droplet impact on a curved solid surface by Lattice Boltzmann Method

In this paper, a two-phase multi-relaxation time latticeBoltzmann model is implemented to investigate dropletimpact on a curved solid surface. The improved model iscapable of simulating the phenomenon at low viscosities,different contact angles, and relatively high density ratios.Effects of varying the liquid viscosity and surfacewettability are shown and discussed. For the impact on ahydrophilic surface, it was found that increasing the liquidviscosity slows down its spreading motion and the liquidshows more resistance to be stretched by the gravity forcebelow the solid. In the case of droplet impact on ahydrophobic surface, secondary drops are separated fromthe spreading liquid before it even reaches the bottom of thesurface

کلیدواژه ها:

LBM ، Droplet ، Impact ، Curved Surface