Drop Impact on a Solid Surface

C. Josserand, Sigurdur T Thoroddsen

Research output: Contribution to journalArticlepeer-review

613 Scopus citations

Abstract

© Copyright 2016 by Annual Reviews. All rights reserved. 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.
Original languageEnglish (US)
Pages (from-to)365-391
Number of pages27
JournalAnnual Review of Fluid Mechanics
Volume48
Issue number1
DOIs
StatePublished - Sep 22 2015

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