Fragmentation instability of a liquid drop falling inside a heavier miscible fluid

Year: 2005

Authors: Buah Bassuah P.K., Rojas R., Residori S., Arecchi F.T.

Autors Affiliation: Institut Non-lineaire de Nice, 1361 Route des Lucioles, 06560, Valbonne, France;
Physics Department, University of Cape Coast, Cape Coast, Ghana;
Istituto Nazionale di Ottica Applicata, Largo E. Fermi 6, 50125 Firenze, Italy;
Department of Physics, University of Firenze, 50125 Firenze, Italy

Abstract: We report a different type of drop instability, where the density difference between the drop and the solvent is negative. We show that the drop falls inside the solvent down to a minimum height, then fragmentation takes place and secondary droplets rise up to the surface. We have developed a theoretical model that captures the essentials of the phenomenon and predicts the correct scalings for the rise-up time and the minimum height.

Journal/Review: PHYSICAL REVIEW E

Volume: 72 (6)      Pages from: 67301-1  to: 67301-4

KeyWords: Break-up
DOI: 10.1103/PhysRevE.72.067301

Citations: 8
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