Levitation of air bubbles in liquid under low frequency vibration excitement

Ellenberger, J. ; Krishna, R. (2007) Levitation of air bubbles in liquid under low frequency vibration excitement Chemical Engineering Science, 62 (18-20). pp. 5669-5673. ISSN 0009-2509

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Official URL: http://www.sciencedirect.com/science/article/pii/S...

Related URL: http://dx.doi.org/10.1016/j.ces.2006.12.043


This experimental study reports the influence of low frequency vibrations, in the range of 50-250 Hz, on the rise of single gas bubbles injected into a column of liquid. Water and a high-viscosity hydrocarbon-oil were used as the liquid phase. For a specified set of operating conditions the bubble can be made to levitate, i.e. held stationary in the column. The bubbles employed had volumes that varied from 0.01 to 0.6 mL. The height of the liquid, h, above the position at which the bubble is levitated was determined for a wide range of operating conditions (bubble volume Vb, vibration frequency, f, pressure above the liquid surface, P, and the vibration amplitude, λ ). The experimental values of h are in good agreement with the theoretical model of Baird (1963. Resonant bubbles in a vertically vibrating column. Canadian Journal of Chemical Engineering 41, 52-55).

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Bubbles; Bubble Levitation; Vibration Frequency; Vibration Amplitude; Acoustic Force
ID Code:65358
Deposited On:17 Oct 2011 03:27
Last Modified:17 Oct 2011 03:27

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