Title of Paper:Numerical study on impingement of a droplet upon a liquid film

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Date of Publication:2010-12-11

Included Journals:EI、CPCI-S、Scopus

Volume:44-47

Page Number:2499-2503

Key Words:droplet; liquid film; impingement; splashing; volume-of fluid (VOF)

Abstract:This paper reports progress in the numerical simulations of a droplet impingement upon the wall film of the same liquid. The full Navier-Stokes equations are solved in axisymmetric formulation. The surface tension force is modeled by a continuum surface force (CSF) model. An adapting local refinement technique is used to provide the fine grid coupled by the volume-of fluid (VOF) method for tracking the interface between the gas and the droplet and liquid film. Results indicate that the motion behavior of droplet impingement upon the liquid film is dominantly influenced by the initial kinetic energy and the thickness of the film as well as the surface tension and the liquid viscosity.