Modeling of surface tension and contact angles with smoothed particle hydrodynamics

摘要: A two-dimensional numerical model based on smoothed particle hydrodynamics (SPH) was used to simulate unsaturated (multiphase) flow through fracture junctions. combination of standard SPH equations with pairwise fluid-fluid and fluid-solid particle-particle interactions allowed surface tension three-phase contact dynamics be simulated. The validated by calculating the in four different ways: (i) from small-amplitude oscillations fluid drops, (ii) dependence capillary pressure drop radius, (iii) rise simulations, (iv) behavior a confined between parallel walls under influence gravity. All simulations led consistent values for tension. receding advancing angles droplet velocity studied. Incorporation junctions realistically simulated, simulation results compare well laboratory experiments Dragila Weisbrod.