Droplet Spreading: Partial Wetting Regime Revisited
نویسندگان
چکیده
منابع مشابه
Droplet Spreading: Partial Wetting Regime Revisited
We study the time evolution of a sessile liquid droplet, which is initially put onto a solid surface in a nonequilibrium configuration and then evolves towards its equilibrium shape. We adapt here the standard approach to the dynamics of mechanical dissipative systems, in which the driving force, i.e., the gradient of the system’s Lagrangian function, is balanced against the rate of the dissipa...
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We study the time evolution of a sessile liquid droplet, which is initially put onto a solid surface in a non-equilibrium configuration and then evolves towards its equilibrium shape. We adapt here the standard approach to the dynamics of mechanical dissipative systems, in which the driving force, i.e. the gradient of the system's Lagrangian function, is balanced against the rate of the dissipa...
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The spreading of a liquid droplet on a smooth solid surface in the partially wetting regime is studied using a diffuse-interface model, based on the Cahn-Hilliard theory. Following Jacqmin (2000) the model is extended to include non-90 • contact angles. The diffuse-interface model applied considers the ambient fluid displaced by the droplet while spreading as a liquid. The governing equations o...
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Wetting phenomena are ubiquitous in nature and technology. A solid substrate exposed to the environment is almost invariably covered by a layer of fluid material. In this review, the surface forces that lead to wetting are considered, and the equilibrium surface coverage of a substrate in contact with a drop of liquid. Depending on the nature of the surface forces involved, different scenarios ...
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The influence of controlled vibrations on the granular rheology is investigated in a specifically designed experiment in which a granular film spreads under the action of horizontal vibrations. A nonlinear diffusion equation is derived theoretically that describes the evolution of the deposit shape. A self-similar parabolic shape (the "granular droplet") and a spreading dynamics are predicted t...
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ژورنال
عنوان ژورنال: Langmuir
سال: 1999
ISSN: 0743-7463,1520-5827
DOI: 10.1021/la971301y