Journal ArticleDOI
Maximal deformation of an impacting drop
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TLDR
In this article, the impact of a liquid drop of low viscosity on a super-hydrophobic surface was studied. But the authors focused on the effect of the drop on the spread of the liquid on the surface.Abstract:
We first study the impact of a liquid drop of low viscosity on a super-hydrophobic surface. Denoting the drop size and speed as are the liquid density and surface tension). This law is also observed to hold on partially wettable surfaces, provided that liquids of low viscosity (such as water) are used. The law is interpreted as resulting from the effective acceleration experienced by the drop during its impact. Viscous drops are also analysed, allowing us to propose a criterion for predicting if the spreading is limited by capillarity, or by viscosity.read more
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Maximum spreading of liquid droplets impact on concentric ring-textured surfaces: Theoretical analysis and numerical simulation
TL;DR: Considering the effects of contact line pinning and liquid penetration into textures, a theoretical model to predict the maximum spreading factor on concentric ring-textured surfaces is developed in this article, which is validated with numerical simulations conducted by an effective, sharp-interface, continuum level modeling method.
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Drop impact close to the edge of an inclined substrate: Liquid sheet formation and breakup
Sophie Lejeune,Tristan Gilet +1 more
TL;DR: In this article, the impact of a drop near the edge of an inclined substrate is investigated, where a liquid sheet forms beyond the edge, then fragments into droplets, and a minimal model of the crucial raindrop impacts on plant leaves that are responsible for the dispersal of crop diseases.
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Head-on collision of two immiscible droplets of different components
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Grazing impact of continuous droplet streams with a superhydrophobic surface
Paul R. Chiarot,Thomas B. Jones +1 more
TL;DR: In this paper, a detailed accounting of the kinetic and potential energies reveals that neither droplet oscillation nor rotation can fully account for the loss of translational kinetic energy, indicating significant internal circulation must occur in the droplets at impact.
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Droplet impact on heated powder bed
TL;DR: This study reveals several phenomena specific to the impact on a heated powder bed such as rebound, ruptures of expanding liquid films, bubble nucleation, and fluidization and shows that the maximum spreading diameter increases with the surface temperature of the powder bed.