Surface tension effects in the zero gravity inflow of a drop into a fluid

Year: 2000

Authors: Residori S., Pampaloni E., Buah Bassuah PK., Arecchi F.T.

Autors Affiliation: Istituto Nazionale di Ottica, Largo E. Fermi 6, 50125 Firenze, Italy;
INLN, UMR, CNRS, Universit de Nice-Sophia Antipolis, 1361, Route des Lucioles, 06500 Valbonne, France;
Department of Physics, University of Firenze, Italy;
Department of Physics, University of Cape Coast, Ghana

Abstract: As a drop of fluid is deposited on the surface of a miscible fluid (that we call the solvent), it undergoes a strong pulling due to its surface rupture and it acquires a kinetic energy independently of gravity. For the drop and the solvent being of the same fluid we observe a drop injection at an initial velocity which scales as the square root of the surface tension of the drop against air. Once injected, the drop develops a transverse instability giving rise to an expanding ring. Viscosity terminates the process and stops the ring. We show that the final ring height follows a scaling law whereas two asymptotical scaling regimes can be identified for the ring radius.


Volume: 15 (2)      Pages from: 331  to: 334

KeyWords: Miscible displacements; Break-up; Liquid
DOI: 10.1007/s100510051133

Citations: 9
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