Drop dynamics after impact on a solid wall: Theory and simulations

Jens G Eggers, Marcos Fontelos, C Josserand, S Zaleski

Research output: Contribution to journalArticle (Academic Journal)peer-review

192 Citations (Scopus)

Abstract

We study the impact of a fluid drop onto a planar solid surface at high speed so that at impact, kinetic energy dominates over surface energy and inertia dominates over viscous effects. As the drop spreads, it deforms into a thin film, whose thickness is limited by the growth of a viscous boundary layer near the solid wall. Owing to surface tension, the edge of the film retracts relative to the flow in the film and fluid collects into a toroidal rim bounding the film. Using mass and momentum conservation, we construct a model for the radius of the deposit as a function of time. At each stage, we perform detailed comparisons between theory and numerical simulations of the Navier–Stokes equation.
Original languageEnglish
Article number062101
Number of pages13
JournalPhysics of Fluids
Volume22
Issue number6
DOIs
Publication statusPublished - Jun 2010

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