3D CFD Simulation of a Bubble Column with Internals: Validation of Interfacial Forces and Internal Effects for Local Gas Holdup Predictions

Al-Naseri, Hayder; Schlegel, J. P.; Al-Dahhan, Muthanna H.

doi:10.1021/acs.iecr.3c01404

Cited by 1 publication

(1 citation statement)

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“…A similar configuration was also simulated in the computational fluid dynamics (CFD) simulation of Schlegel et al, where a population balance model was employed to describe the bubble breakup and coalescence. In addition to the observed wavy radial distribution of the gas holdup, their simulation found significantly higher gas holdup in the wall region, especially with large-diameter internals.…”

Section: Introductionmentioning

confidence: 99%

Experiment and Simulation Study on the Effect of Internals in Gas–Liquid Bubble Columns with a Low Aspect Ratio

Hua,

Zhang,

et al. 2024

Ind. Eng. Chem. Res.

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The gas–liquid flow dynamics in a special bubble column with a low aspect ratio, which was equipped with annular gas distributors, were investigated through experiments and computational fluid dynamics simulation. The local gas holdup in the empty column obtained by the fiber probe and pressure sensors was used to validate the accuracy of the numerical simulation. The effect of the number of internals that were arranged near the column wall on the flow characteristics was further studied. A unique core-annular liquid circulation (ascending in the annular region and descending in the core region) was found in this special bubble column. The increasing number of internals produced weaker turbulent dissipation rates and turbulent kinetic energy in the annular region, as well as greater shear stresses which forced the bubbles to prefer to diffuse to the other radial position. The influence of a larger number of internals could be considered to divide the bubble column into subcolumns.

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Section: Introductionmentioning

confidence: 99%