Abstract
The dispersion of gas into liquid is a complex part and it is depending on bubble size and its distribution including coalescence and breakup. The study of flow pattern, bubble size and its distribution and factors affecting the bubble size was reviewed by several authors. Various measurement techniques of bubble size are also reported in literature. In this paper we have made an attempt to show the literature survey on bubble dynamics as it plays very crucial role in mass transfer characteristics. Key words: Computational fluid dynamics (CFD), multiphase flow gas-liquid two-phase flow, bubbly flow, bubble size distribution, Sauter-mean bubble diameter, mean bubble size, bubble breakup and coalescence, free surface flow, slug flow.
Highlights
The study of flow pattern, bubble size and its distribution and factors affecting the bubble size was reviewed by several authors
Two-phase flow is defined as flow of a heterogeneous mixture of gas and liquid, where the fluid can be identified as macroscopic structure or in other words the fluids in a two-phase flow are not homogeneously mixed at a molecular level, but macroscopic regions of the fluid like droplets, bubbles, slugs, liquid films, ligaments, etc. can be observed
Typical examples of gas-liquid multiphase flow are bubbly, spray, and stratified flow where fluids are separated by a free surface like in annular and slug flow regime of gas-liquid two-phase flow in pipes and channels
Summary
The dispersion of gas into liquid is a complex part and it is depending on bubble size and its distribution including coalescence and breakup. The study of flow pattern, bubble size and its distribution and factors affecting the bubble size was reviewed by several authors. Various measurement techniques of bubble size are reported in literature. In this paper we have made an attempt to show the literature survey on bubble dynamics as it plays very crucial role in mass transfer characteristics
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