Resolved multiple-droplet evaporation
Alexander W Wray
Abstract
A simple, accurate asymptotic formula is derived for the spatially resolved evaporative flux from multiple spherical-cap droplets of arbitrary contact angle. Kelvin transforms are used to determine the exact response of a spherical-cap droplet to a point source, with extensions to higher multipoles. This yields explicit formulae for evaporative shielding and reveals a universal spatial structure in the point-source problem. Resolving the spatial variation enables the determination of the associated liquid flow and particle transport. The resulting flux is used to derive an explicit measure of shielding-induced liquid transport.
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