Abstract
MANY theoretical and experimental investigations have been carried out on collisions between a single sphere and one or more smaller ones as the former moves through a field of the latter. Pertinent physical phenomena are the growth of raindrops by coalescence and the scavenging on non-liquid particulates from the atmosphere. An index of the efficiency of these processes is given by the concept of collision efficiency. A large drop moving through the atmosphere under gravitational forces sweeps out a cylindrical volume equal in cross-section to that of the advancing drop.
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MAGARVEY, R., HOSKINS, J. Entrainment of Small Particles by a Large Sphere. Nature 218, 460 (1968). https://doi.org/10.1038/218460a0
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DOI: https://doi.org/10.1038/218460a0
