Title
Two-Dimensional Lattice Boltzmann Model for Droplet Impingement and Breakup in Low Density Ratio Liquids
Abbreviated Journal Title
Commun. Comput. Phys.
Keywords
Lattice Boltzmann; droplet impingement; spread factor; breakup; SOLID-SURFACE; IMMISCIBLE DROPLET; BUBBLE DYNAMICS; IMPACT; SIMULATION; FLUIDS; FLOWS; DISPLACEMENT; COLLISION; EQUATION; Physics, Mathematical
Abstract
A two-dimensional lattice Boltzmann model has been employed to simulate the impingement of a liquid drop on a dry surface. For a range of Weber number, Reynolds number and low density ratios, multiple phases leading to breakup have been obtained. An analytical solution for breakup as function of Reynolds and Weber number based on the conservation of energy is shown to match well with the simulations. At the moment breakup occurs, the spread diameter is maximum; it increases with Weber number and reaches an asymptotic value at a density ratio of 10. Droplet breakup is found to be more viable for the case when the wall is non-wetting or neutral as compared to a wetting surface. Upon breakup, the distance between the daughter droplets is much higher for the case with a non-wetting wall, which illustrates the role of the surface interactions in the outcome of the impact.
Journal Title
Communications in Computational Physics
Volume
10
Issue/Number
3
Publication Date
1-1-2011
Document Type
Article
Language
English
First Page
767
Last Page
784
WOS Identifier
ISSN
1815-2406
Recommended Citation
"Two-Dimensional Lattice Boltzmann Model for Droplet Impingement and Breakup in Low Density Ratio Liquids" (2011). Faculty Bibliography 2010s. 1340.
https://stars.library.ucf.edu/facultybib2010/1340
Comments
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