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contributor authorMcTaggart-Cowan, J. D.
contributor authorList, Roland
date accessioned2017-06-09T14:18:18Z
date available2017-06-09T14:18:18Z
date copyright1975/07/01
date issued1975
identifier issn0022-4928
identifier otherams-16871.pdf
identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4152702
description abstractThe collision and subsequent breakup of water drops moving essentially vertically and at terminal velocity has been studied for five drop pairs: the diameters Ds of the large drops were 4.8, 3.6 and 3.0 mm; the diameters D3 of the small drops were 1.8 mm and 1.0 mm. 712 collisions were obtained in 25,000 individually recorded attempts. Three distinct types of collision-breakup were found with the following occurrence: necks 27%, sheets 55% and disks 18%. Bag breakups were insignificant with <0.5%. All types are defined and corresponding examples shown. Fragment size and number distributions for the different types and the overall situation give further reasons for the breakdown into the different types. The disk collision has been found to be the major cause for the depletion in number of large drops, hence the cutoff of large drops in rain. The results also form the first data bank for numerically modelling the evolution of raindrop size spectra and the Langmuir chain process.
publisherAmerican Meteorological Society
titleCollision and Breakup of Water Drops at Terminal Velocity
typeJournal Paper
journal volume32
journal issue7
journal titleJournal of the Atmospheric Sciences
identifier doi10.1175/1520-0469(1975)032<1401:CABOWD>2.0.CO;2
journal fristpage1401
journal lastpage1411
treeJournal of the Atmospheric Sciences:;1975:;Volume( 032 ):;issue: 007
contenttypeFulltext


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