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Bubble Breakup and Coalescence in a Plunging Liquid Jet Bubble Column
Author(s) -
Atkinson Bruce W.,
Jameson Graeme J.,
Nguyen Anh V.,
Evans Geoffrey M.,
Machniewski Piotr M.
Publication year - 2003
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450810325
Subject(s) - bubble , coalescence (physics) , mechanics , breakup , weber number , dissipation , materials science , physics , thermodynamics , reynolds number , turbulence , astrobiology
In this study the bubble size distribution and energy dissipation rate are measured in a plunging liquid jet bubble column. The maximum stable bubble diameter in the mixing zone was successfully predicted based on Weber number analysis. A Pareto analysis indicated that the coalescence of bubbles principally occurred as a binary process. The bubble number flux was modeled based on the bubble number concentration, collision frequency of two bubbles of the same diameter, and the probability of coalescence taking place. In general, the predictions were in good agreement with the measurements for both the mixing and pipe flow zones.