Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"Drop Coalescence"”.
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Controlling drop coalescence using nano-engineered surfaces
The dynamics of drop coalescence are explored on micro-scale surface features for the first time. Drop coalescence is defined as a process by which two or more droplets, bubbles or particles merge during contact to form a single droplet, bubble or particle. There are two regimes that limit the …
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LATTICE BOLTZMANN SIMULATION OF BINARY DROP COALESCENCE AT LOW WEBER NUMBER
… interface approach to investigate the early-time coalescence dynamics of two liquid drops. The two drops approach each other at a very low Weber number (We) and the coalescence process is driven by surface tension. When the two drops come into contact, the curvature diverges and causes infinitely …
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INTERFACIAL DYNAMICS OF DROP COALESCENCE AND IMPINGING LIQUID JETS: EFFECT OF VISCOUS, MARANGONI AND SHEAR-THINNING STRESSES
<p>The free-surface dynamics of drop coalescence and that of impinging liquid jets have both fundamental interest and practical importance in processes ranging from crop spraying and the processing of food emulsions to the atomization of fuel and pro- pellants in combustion and propulsion engines. …
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INTERFACIAL DYNAMICS OF DROP COALESCENCE AND IMPINGING LIQUID JETS: EFFECT OF VISCOUS, MARANGONI AND SHEAR-THINNING STRESSES
The free-surface dynamics of drop coalescence and that of impinging liquid jets have both fundamental interest and practical importance in processes ranging from crop spraying and the processing of food emulsions to the atomization of fuel and pro- pellants in combustion and propulsion engines. …
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Influence of Surface Wettability on Drop Dynamics and Condensation
… At the two theoretical extremes, a liquid drop on a surface can completely spread to a film or bead to a perfect sphere. In practice, some form of intermediate or partial wetting is obtained with the liquid adopting a spherical cap shape. Two metrics are commonly employed to specify the …
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Droplet coalescence in the shear flow of model emulsions
During the flow of an emulsion, droplets of the dispersed phase can deform, breakup, coalesce or migrate to other regions within the flow field. Understanding these different processes, both individually and jointly, is relevant, for example, to the development of morphology in immiscible …
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About the role of physico-chemical properties and hydrodynamics on the progress of a precipitation reaction
… configuration consisting of coalescing drops is set to investigate the link between reactive crystallization and hydrodynamics. Two configurations of aqueous drops are examined. The first one corresponds to high contact angle drops (>90°) in oil, as a model system for flowing drops, the …
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Simulation of two-phase dynamics using lattice boltzmann method (LBM)
… flow, specifying static bubbles/droplets in a periodic domain, two-bubble or two-drop coalescence, single rising bubble, break-up of a drop/bubble due to shearing walls, specifying different equilibrium contact angles on the surfaces, dynamics of drop/bubble in contact with a …
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Stability, transport and applications of polyaphrons in porous media
… bulk organic phase lighter than water. Since the coalescence between aphrons is a crucial step in the polyaphron treatment, we develop a boundary element method (BEM) model to study the coalescence behavior of a pair of drops of equal size in a constricted tube. Our simulations show that the …