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Atomization and Sprays
Editor-in-Chief Europe: Günter Brenn (open in a new tab)
Editor-in-Chief Americas: Marcus Herrmann (open in a new tab)
Редактор-основатель: Norman Chigier (open in a new tab)

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ISSN Печать: 1044-5110

ISSN Онлайн: 1936-2684

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PRIMARY BREAKUP OF NONTURBULENT ROUND LIQUID JETS IN GAS CROSSFLOWS

Том 9, Выпуск 3, 1999, pp. 291-312
DOI: 10.1615/AtomizSpr.v9.i3.40
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Краткое описание

An experimental investigation of primary breakup of nonturbulent round liquid jets in gas crossflows is described. Pulsed shadowgraph measurements of jet primary breakup regimes, jet deformation properties, time of onset of primary breakup, and liquid column and liquid surface disturbance wavelengths were obtained for air crossflows at normal temperature and pressure, the test range included crossflow Weber numbers of 0−200, liquid jet Weber numbers of 0−1,600,000, liquid jet Reynolds numbers of 0−800,000, liquid/gas momentum ratios of 100−8000, liquid/gas density ratios of 700−1100, and Ohnesorge numbers of 0.00006−0.3. The results suggest qualitative similarities between the primary breakup of nonturbulent round liquid jets in crossflows and the secondary breakup of drops, with relatively little effect of the liquid/gas momentum ratio over the present test range. Effects of liquid viscosity were also small for Ohnesorge numbers less than 0.1, but larger Ohnesorge numbers modified primary breakup because unusually long ligaments developed that also are seen during the secondary breakup of drops.

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