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A NUMERICAL ANALYSIS ON THE COLLISION BEHAVIOR OF WATER DROPLETS  

Nam Hyun-Woo (한라공조주식회사)
Baek Je-Hyun (포항공과대학교 기계공학과)
Publication Information
Journal of computational fluids engineering / v.11, no.3, 2006 , pp. 14-21 More about this Journal
Abstract
A numerical simulation of the binary collision dynamics of water drops for size ratios of 1 and 0.75, for the Weber number range of 5 to 100, and for all impact parameter is reported. Two different types of separating collisions, namely reflexive and stretching separations, are identified. A numerical method is based on a fractional-step method with a finite volume formulation and the interface is tracked with Volume of Fluid(VOF) method, including surface tension. Numerical results for size ratios 1 and 0.75 are reasonablely compared with Ashgriz and Poo's experimental results.
Keywords
Coalescence; Stretching separation; Reflexive separation; Satellite droplet; Droplet collision;
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