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Bubble formation at vibrated orifices: Medium‐chamber‐volume region
Author(s) -
Baker C. T.,
de Nevers Noel
Publication year - 1984
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690300107
Subject(s) - body orifice , bubble , volume (thermodynamics) , inviscid flow , mechanics , liquid bubble , gas bubble , vibration , amplitude , acceleration , chemistry , materials science , physics , thermodynamics , optics , acoustics , classical mechanics , mechanical engineering , engineering
The bubble formation process at small, single, circular orifices at low gas flow rates is modified when the system is vertically vibrated in a sinusoidal fashion. For systems with significant gas chamber volume, bubble volume in the vibrated case is smaller than in the nonvibrated case. The vibrations increase the amount of liquid weeping through the orifice into the gas chamber. A simple inviscid model adequately predicts bubble formation in the medium‐chamber‐volume region at low values of amplitude and frequency of vibration and low viscosities. The boundaries of the transition from the FR ≫ 1 to the FR = 1 regions are described in terms of “the acceleration number/Eötvös number”.