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CFD Simulation of Residence Time Distribution and Mixing in Bubble Column Reactors
Author(s) -
Ekambara Kalekudithi,
Joshi Jyeshtharaj B.
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.5450810345
Subject(s) - mixing (physics) , computational fluid dynamics , residence time distribution , bubble , mechanics , dispersion (optics) , materials science , range (aeronautics) , residence time (fluid dynamics) , thermodynamics , physics , optics , flow (mathematics) , engineering , geotechnical engineering , quantum mechanics , composite material
A three‐dimensional CFD model has been developed to predict liquid phase velocities in bubble columns. An agreement was observed between the predicted and the experimental data available in the published literature. The validated CFD model has been extended for the simulation of macro‐mixing and hence the prediction of mixing time, RTD and dispersion coefficient. Liquid phase mixing time was measured in 0.2 and 0.4 m i.d. columns over a wide range of superficial gas velocity (0.07 to 0.295 m/s) and height‐to‐diameter ratio (2 to10). An agreement was observed between the CFD predictions and the experimental values of the mixing time as well as all the experimental data on dispersion coefficient published in the literature.