Large-Scale Computer Simulations of Oil/Water/Surface-Active Particles Systems

Abstract

A direct numerical method, based on statistical mechanics and fluid mechanics, is proposed to simulate the solid particles suspended in immiscible oil/water mixtures. Our simulation method successfully reproduces (i) the Laplace pressure of oil droplets in water, and (ii) oil droplets on the solid surfaces with various wettabilities in water. Our method allows us to represent not only the hydrodynamics of the particles, but the arbitrary wettability of the particles for the two liquids (e.g., the hydrophobic, hydrophilic, and surface-active particles).