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Coalescence and Break‐Up in Bubble Columns: Euler‐Lagrange Simulations Using a Stochastic Approach
Author(s) -
Gruber Michael C.,
Radl Stefan,
Khinast Johannes G.
Publication year - 2013
Publication title -
chemie ingenieur technik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.365
H-Index - 36
eISSN - 1522-2640
pISSN - 0009-286X
DOI - 10.1002/cite.201300024
Subject(s) - coalescence (physics) , bubble , mechanics , euler's formula , column (typography) , dispersity , mathematics , statistical physics , materials science , physics , mathematical analysis , geometry , astrobiology , connection (principal bundle) , polymer chemistry
A systematic study of the impact of break‐up and coalescence (B&C) on the hydrodynamics in a bubble column is presented. A stochastic approach was chosen for the integration of various B&C kernels into a four‐way coupled Euler‐Lagrange model. The model is benchmarked against the Deen case, and good agreements were found for the gas holdup and the bubble size distribution. While the results indicate that monodisperse bubbles suffice to correctly forecast the flow features, B&C models are the key to predict the specific interfacial area especially in the lower half of the bubble column.