Mass transfer modeling and simulation of a transient homogeneous bubbly flow in a bubble column

Hissanaga, Adriano Martins; Padoin, Natan; Paladino, Emilio E.

doi:10.1016/j.ces.2020.115531

Cited by 17 publications

(1 citation statement)

References 25 publications

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“…Lamont and Scott extended Fortescue’s model to encompass a wider range of eddy sizes in well-developed turbulent fields. Numerous researchers integrated CFD simulations with mass transfer models to investigate the mass transfer characteristics in bubble columns. ,− These studies offer references for the accurate prediction of mass transfer behaviors and the design of bubble columns. However, these investigations also present some noticeable limitations: (1) the bubble shape was generally assumed to be spherical in previous studies, which is incredible given that bubbles deform as they rise, particularly the larger ones; (2) the previous studies on mass transfer characteristics in bubble columns usually focused on overall analyses, with limited in-depth investigations into the specific details of local mass transfer; (3) mass transfer models proposed in past decades have not been systematically compared, and their applicability remains to be determined.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Mass Transfer Characteristics of Gas–Liquid Bubble Columns and an Improved Mass Transfer Model

Wang,

Wen,

Zhang

et al. 2024

Ind. Eng. Chem. Res.

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This study aims to achieve an accurate prediction of the mass transfer characteristics of bubble columns under various conditions. First, numerous simulation cases are conducted to explore the appropriate numerical models and bubble sizes for accurately predicting gas holdup of air−water bubble columns operated with superficial gas velocity in the scope of 0.01 to 0.23 m/ s. Second, suitable approaches are employed to evaluate the accuracy of some developed aspect ratio models and mass transfer models. Lastly, an improved model considering the residence time distribution is developed, and the effects of bubble shape and bubble swarm on mass transfer are deeply analyzed. This work provides a comprehensive insight into the mass transfer characteristics across different regions of gas−liquid bubble columns operated at various regimes, and offers references for precisely predicting gas−liquid mass transfer rates as well as designing and optimizing bubble columns.

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