Drop Impact on a Solid Surface
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In this article, the authors focus on recent experimental and theoretical studies, which aim at unraveling the underlying physics, characterized by the delicate interplay of liquid inertia, viscosity, and surface tension, but also the surrounding gas.Abstract:
A drop hitting a solid surface can deposit, bounce, or splash. Splashing arises from the breakup of a fine liquid sheet that is ejected radially along the substrate. Bouncing and deposition depend crucially on the wetting properties of the substrate. In this review, we focus on recent experimental and theoretical studies, which aim at unraveling the underlying physics, characterized by the delicate interplay of not only liquid inertia, viscosity, and surface tension, but also the surrounding gas. The gas cushions the initial contact; it is entrapped in a central microbubble on the substrate; and it promotes the so-called corona splash, by lifting the lamella away from the solid. Particular attention is paid to the influence of surface roughness, natural or engineered to enhance repellency, relevant in many applications.read more
Citations
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A numerical study of droplet impact on solid spheres: The effect of surface wettability, sphere size, and initial impact velocity
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Enhancing the Asymmetry of Bouncing Ellipsoidal Drops on Curved Surfaces
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Numerical Treatment of the Interface in Two Phase Flows Using a Compressible Framework in OpenFOAM: Demonstration on a High Velocity Droplet Impact Case
TL;DR: In this article, the authors present a new compressible framework within OpenFOAM which incorporates mitigation strategies for the well known issue of spurious currents, which can accurately predict the dynamics of fast moving and deforming interfaces.
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Experimental Study on Droplet Splash and Receding Breakup on a Smooth Surface at Atmospheric Pressure.
TL;DR: In this article, the effects of liquid viscosity on the transition between droplet deposition (or droplet spreading without breakup) and droplet disintegration (including droplet splash and receding breakup) were experimentally studied and physically interpreted.
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Study of the effect of surface wettability on droplet impact on spherical surfaces
TL;DR: In this paper, the effect of surface wettability on droplet impact on spherical surfaces was studied with the CLSVOF method, and the maximum spreading factor and time needed to reach the maximum spread factor were both increased.
References
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Journal ArticleDOI
Drop Impact Dynamics: Splashing, Spreading, Receding, Bouncing ...
TL;DR: In this article, a review deals with drop impacts on thin liquid layers and dry surfaces, referred to as splashing, and their propagation is discussed in detail, as well as some additional kindred, albeit nonsplashing, phenomena like drop spreading and deposition, receding (recoil), jetting, fingering, and rebound.
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TL;DR: It is shown that mixing fine droplets of an antisolvent and a solution of an active semiconducting component within a confined area on an amorphous substrate can trigger the controlled formation of exceptionally uniform single-crystal or polycrystalline thin films that grow at the liquid–air interfaces.
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Robust omniphobic surfaces
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Phenomena of liquid drop impact on solid and liquid surfaces
TL;DR: The fluid dynamic phenomena of liquid drop impact are described and reviewed in this article, and specific conditions under which the above phenomena did occur in experiments are analyzed and the characteristics of drop impact phenomena are described in detail.