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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.

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Journal ArticleDOI

Multi-scale simulation of rainwater morphology evolution on a cylinder subjected to wind

TL;DR: In this article, a 2D multiscale model of rainwater morphology evolution on a cylinder subjected to wind is investigated, where the Lagrange particle method is used to simulate rain droplets in the LES zone, far away from the cylinder surface, and the volume-of-fluid method is adopted to capture the morphology of the interface of the liquid-gas system.
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Energetics of a bouncing drop: Coefficient of restitution, bubble entrapment, and escape

TL;DR: In this article, the authors used axisymmetric direct numerical simulations to shed light on the energetics of a drop bouncing from a solid surface, revealing a complex interplay between various energies that occur during impact.
Journal ArticleDOI

Current status and future prospects of applying bioinspired superhydrophobic materials for conservation of stone artworks

TL;DR: In this paper, a review of bioinspired ultra-repellent materials for art conservation is presented, along with a discussion on the droplet impact and durability of the artificial super-hydrophobic surfaces.
Journal ArticleDOI

The use of small bloodstains in blood source area of origin determinations

TL;DR: It is shown that an apparent power law relationship may exist between the size of a parent blood droplet and the role of viscous and surface tension forces on subsequent bloodstain formation, particularly on those bloodstains caused by small droplets impacting obliquely with planar surfaces.
Journal ArticleDOI

Assemblies disaggregation and diffusion dictated droplet impact and wetting behaviors on hydrophobic surface

TL;DR: In this article, cationic surfactants with different double-chain lengths (8-14) are adopted to regulate droplet impact and wetting on hydrophobic paraffin surface (simulating leaves).
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