Abstract
Simulation of droplet formation by the breakdown of two-phase jet ejected into air is conducted with Volume of Fluid (VOF) method supplied by Computational Fluid Dynamic Package (CFD, Fluent ver. 6.1) for studying the generation of monodisperse droplets. Studied is the system where an oil jet sheathed with water is ejected into air and breaks down into droplets under the influence of acceleration force. The simulation results showed that the dimensionless parameter Da/V2 where D is the nozzle diameter, a the acceleration of jet, V the ejection velocity of liquid is a dominative parameter for determining the droplet size. VOF is one of the useful tools in finding governing dimensional parameters for the generation of droplets through the breakdown of two-liquid jet.
