Journal
INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW
Volume 36, Issue -, Pages 58-71Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.ijheatfluidflow.2012.04.001
Keywords
Water droplet; Coalescence; Binary collision; CFD; VOF
Categories
Ask authors/readers for more resources
Coalescence of two water droplets in the oil was simulated using Computational Fluid Dynamics (CFD) techniques. The finite volume numerical method was applied to solve the Navier-Stokes equations in conjunction with the Volume of Fluid (VOF) approach for interface tracking. The effects of some parameters consisting of the collision velocity, off-center collision parameter, oil viscosity and water-oil interfacial tension on the coalescence time were investigated. The simulation results were validated against the experimental data available in the literature. The results revealed that quicker coalescence could be achieved if the head-on collisions occur or the droplets approach each other with a high velocity. In addition, low oil viscosities or large water-oil interfacial tensions cause less coalescence time. Moreover, a correlation was developed to predict coalescence efficiency as a function of the mentioned parameters. (c) 2012 Elsevier Inc. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available