The motion of bubbles rising in confined geometries has gained interest due to its applications mixing and mass transfer processes, ranging from bubble column reactors the chemical industry solar photobioreactors for algae cultivation. In this work we performed an experimental investigation behavior air freely at high Reynolds numbers a planar thin-gap cell thicknessh=2.8 mm filled with distill...

Abstract Microplastic particle concentration at the sea surface is critical for quantifying microplastic transport across water-air interface. Previous studies suggest that enhanced compared to bulk concentration, yet little known about detailed mechanisms behind this enhancement. In work, we model one particular process in simulation may contribute concentration: bubble scavenging. Using latti...

Since typical industrial-scale reactors may contain many millions of bubbles, the extension of direct free-surface modelling techniques to resolve every bubble in the vessel would require far more computational power than will be available. A more immediate solution is to couple macro-scale reactor models to micro-scale models of individual bubbles and collections of a small number of bubbles. ...

Mass transfer in gas liquid systems depends on the contact between the entities in which the gas phase is dispersed into the liquid, the bubbles, and the surrounding liquid. Further knowledge of the hydrodynamics of the growing and rising bubbles under mass transfer conditions will help in the understanding of the mass transfer process in bubble columns and in the design of the equipment.