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Bubble entrainment by the impact of drops on liquid surfaces

Published online by Cambridge University Press:  26 April 2006

Hasan N. Oguz  and
Andrea Prosperetti
Hasan N. Oguz
Affiliation:
Department of Mechanical Engineering, The Johns Hopkins University, Baltimore, MD 21218, USA
Andrea Prosperetti
Affiliation:
Department of Mechanical Engineering, The Johns Hopkins University, Baltimore, MD 21218, USA
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Abstract

The impact of a drop on the plane surface of the same liquid is studied numerically. The accuracy of the calculation is substantiated by its good agreement with available experimental data. An attempt is made to explain the recent observation that, in a restricted range of drop radii and impact velocities, small air bubbles remain entrained in the liquid. The implications of this process for the underwater sound due to rain are considered. The numerical approach consists of a new formulation of the boundary-element method which is explained in detail. Techniques to stabilize the calculation in the presence of strong surface-tension effects are also described.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 219 , October 1990 , pp. 143 - 179
Copyright
© 1990 Cambridge University Press

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