Minimising microbubble size through oscillation frequency control

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F15%3A00452201" target="_blank" >RIV/61388998:_____/15:00452201 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.cherd.2015.08.002" target="_blank" >http://dx.doi.org/10.1016/j.cherd.2015.08.002</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.cherd.2015.08.002" target="_blank" >10.1016/j.cherd.2015.08.002</a>

Result language
angličtina
Original language name
Minimising microbubble size through oscillation frequency control
Original language description
The high surface to volume ratio of microbubbles enables them to enhance transport phenomena and therefore can be used to reduce energy demands in many applications including, waste water aeration, froth flotation, oil emulsion separations and evaporation dynamics. Microbubbles can be produced by passing a gas stream through a micro-porous aerator. Previous work has shown that oscillating the gas stream can reduce the bubble size. This paper shows that it is possible reduce microbubble size by varying the frequency of the oscillating gas supply. Three different microbubble generation systems have been investigated: an acoustic oscillation system and a mesh membrane, a fluidic oscillator coupled to a single orifice membrane and a fluidic oscillator coupled to a commercially available ceramic diffuser. In all three methods there is an optimum oscillation frequency. In some cases a reduction in bubble size of up to 73% was achieved compared with non-optimal operating frequencies. The freq
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BK - Liquid mechanics
OECD FORD branch
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Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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