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雾化与喷雾
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ISSN 打印: 1044-5110
ISSN 在线: 1936-2684

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雾化与喷雾

DOI: 10.1615/AtomizSpr.v7.i6.60
pages 649-661

MICROBUBBLE MEDIUM: PRODUCTION AND HYDRODYNAMIC PROPERTIES

Igor V. Chernyshev
Department of Computational Mechanics, Volgograd State University, Volgograd, Russia

ABSTRACT

Some aspects of production of gas-liquid bubble systems with very small bubbles (micro-bubble medium) are discussed. Using photographic measurements and dispersed analysis, parameters of a microbubble medium are determined (bubble mean diameter ≈ 40 μm). Results of simple hydrodynamic experiments with this medium are described. Measurements of the drag coefficient of a solid ball in the microbubble medium were performed at Reynolds number from 0.1 up to 2.2 × 104 and with gas void fraction less than 2.5%. Flow of the microbubble medium in horizontal tubes was investigated under conditions in which the air fraction and the Reynolds number were between 0.0% and 0.7%, and between 103 and 2.5 × 104, respectively.


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