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Atomization and Sprays
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ISSN Druckformat: 1044-5110
ISSN Online: 1936-2684

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Atomization and Sprays

DOI: 10.1615/AtomizSpr.v12.i56.60
pages 641-650

CONTROLLING DROPLET SIZE DISTRIBUTION IN SWIRL ATOMIZERS

Yuriy Khavkin
University of Minnesota, Minneapolis, Minnesota, and Vortex Combustion Engineering Inc., St. Louis Park, Minnesota, USA

ABSTRAKT

An investigation has been undertaken to examine the influence of atomizer construction and droplet size distribution on energy consumption of swirl atomizers used for spray cooling of hot gases. It is shown that in some cases, to minimize the energy consumption the droplet size distribution (or deviation from the mean) is more important than the mean droplet size. It is also shown that, in order to maximize the heat transfer effectiveness and minimize the power requirements for the production of spray droplets, atomizers with low values of the ratio R/rex should he used, where R is the mean inlet radius and rex is the exit orifice radius. Good qualitative agreement between the experimental data and the values predicted by the author has been shown. The direction of further investigations is recommended.


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