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雾化与喷雾
影响因子: 1.737 5年影响因子: 1.518 SJR: 0.814 SNIP: 1.18 CiteScore™: 2.2

ISSN 打印: 1044-5110
ISSN 在线: 1936-2684

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雾化与喷雾

DOI: 10.1615/AtomizSpr.v6.i6.30
pages 667-692

DEFORMATION AND BREAKUP OF DROPS BY AERODYNAMIC FORCES

A. A. Shraiber
Energy Institute, Ukrainian National Academy of Sciences, Kiev, Ukraine
A. M. Podvysotsky
Energy Institute, Ukrainian National Academy of Sciences, Kiev, Ukraine
V. V. Dubrovsky
Energy Institute, Ukrainian National Academy of Sciences, Kiev, Ukraine

ABSTRACT

An analysis of experimental data on the critical conditions of drop breakup by aerodynamic forces is given. Possible causes of divergence among data on the critical Weber number, Wec, obtained by different authors is discussed. It is shown that the most important of these causes is incorrect technique for determining Wec (at the point of breakup), and disregarding the influence of the rate of change of the flow action upon the drop. Thorough experimental investigation of peculiarities of drop fragmentation under critical and over-critical conditions was carried out. Temporal characteristics of the breakup process and the mean size of fragments being formed is measured. Generalizing formulas for Wec, the induction time, and the period of drop natural oscillations are obtained.


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