Smoothed Particle Hydrodynamics Simulation for Water Droplet Motion on Vertical Surface

Abstract

Two- and three-dimensional droplet movements are simulated on vertical direction by using smoothed particle hydrodynamics (SPH), which is a numerical meshfree method. With this technique, the fluid is divided into discrete elements, referred as "particles". Simulating the droplet hanging on the vertical wall, Navier- Stokes equation combined with the surface tension force which models from interaction between particles which is different in the context of fluid-fluid, fluid-wetted area, or fluid-not wetted area, is applied. The numerical results show the effect of surface tension that allows the droplets hanging on the wall and the comparison of droplet status, that is either retent or moving, and angles with the experimental data gives a good agreement.