Collective Effects in Bursting Bubbles Aerosol Production
ORAL
Abstract
The bursting of surface bubbles, understood as a production mechanism of sea spray aerosols, is a key feature of gas and mass transfers between ocean and atmosphere. While the case of a single bursting bubble has been extensively studied recently, little is known about collective effects in this context. Our experimental study characterizes the dynamical and statistical properties of an ensemble of initially mono-disperse air bubbles at the water surface, and the resulting spray droplets being produced. After rising in a still bath, the bubbles stand at the free surface, where they coalesce and move around before they eventually burst. The addition of surface active agents, because they prevent bubbles coalescence above a certain concentration, modify the features of the surface bubbles population (coalescence and lifetime), whose consequences on the spray production are discussed.
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Authors
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Baptiste Neel
Princeton University
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Luc Deike
Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, New Jersey 08544 USA, Princeton University, Mechanical and Aerospace Engineering, Princeton University, Department of Mechanical and Aerospace Engineering, Princeton University