Scaling of the fingering pattern of an impacting drop

H. Marmanis*, Sigurdur Thoroddsen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

79 Scopus citations

Abstract

We have studied experimentally the fingered splatter left behind after a liquid drop impacts a solid surface at high values of the Reynolds and Weber numbers. The viscosity and surface tension of the liquid was varied by using several different fluid mixtures. The surface chosen was a thick paper sheet, on which the drop left a clear signature of the impact pattern. The maximum spreading of the fluid and the number of fingers seem to scale with an Impact Reynolds number, U(π2 ρD3/16σ)1/41/2, where U is the impact velocity, ν the kinematic viscosity of the fluid, ρ the fluid density, σ the surface tension and D the drop diameter. The number of fingers is weakly dependent on the surface tension and depends primarily on the inertial-viscous interaction.

Original languageEnglish (US)
Pages (from-to)1344-1346
Number of pages3
JournalPhysics of Fluids
Volume8
Issue number6
DOIs
StatePublished - Jan 1 1996

ASJC Scopus subject areas

  • Condensed Matter Physics

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