Fragment formation in the break-up of a drop falling in a miscible liquid

Year: 1991

Authors: Arecchi F.T., Buah Bassuah PK., Perez Garcia C.

Autors Affiliation: Istituto Nazionale di Ottica, Largo E. Fermi 6, 50125 Firenze, Italy;
Department of Physics, University of Firenze, 50125 Firenze, Italy;
Department of Physics, University of Cape Coast,Ghana;
Depart. de Fisica, Universidad de navarra Spain.

Abstract: When falling in a lighter miscible solvent, a drop of liquid deforms to a torus which then breaks up into several fragments or just disappears by diffusion. By using liquids of different compositions we show the universal behaviour of the phenomenon, and its dependence on two nondimensional numbers, the fragmentation number F, and the Schmidt number S. While F marks the transition from diffusion to splitting, here we show the role of S in controlling the number of horizontal fragments after the first break-up. The process is explained in terms of competitions of different time scales.

Journal/Review: EPL

Volume: 15 (4)      Pages from: 429  to: 434

KeyWords: GENERAL THEORY; HYDRODYNAMIC STABILITY AND INSTABILITY; FLUID SURFACES AND INTERFACES WITH FLUID; CAPILLARITY; WETTING AND RELATED PHENOMENA
DOI: 10.1209/0295-5075/15/4/011

Citations: 15
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