Journal of Fluid Mechanics



Bubble entrainment by the impact of drops on liquid surfaces


Hasan N.  Oguz a1 and Andrea  Prosperetti a1
a1 Department of Mechanical Engineering, The Johns Hopkins University, Baltimore, MD 21218, USA

Article author query
oguz hn   [Google Scholar] 
prosperetti a   [Google Scholar] 
 

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.

(Published Online April 26 2006)
(Received May 19 1989)
(Revised March 2 1990)



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