Release Time:2019-03-12  Hits:

Indexed by: Journal Article

Date of Publication: 2016-12-01

Journal: CHEMICAL ENGINEERING & TECHNOLOGY

Included Journals: Scopus、EI、SCIE

Volume: 39

Issue: 12

Page Number: 2380-2388

ISSN: 0930-7516

Key Words: Bubble dispersion; Bubble-column reactor; Bubble-liquid turbulent flow; Superficial gas velocity

Abstract: Bubble dispersion characteristics play an important role in heat and mass transfer of bubble-liquid two-phase turbulent flows in bubble-column reactors. In order to quantitatively describe the influence of operation conditions and sparger design on two-phase turbulent hydrodynamics in terms of a computational fluid dynamics approach, a second-order moment bubble-liquid two-phase turbulent model was developed to predict the effects of superficial gas velocity, liquid and gas density, liquid dynamic viscosity, and sparger nozzle configuration on bubble-liquid hydrodynamics, e.g., bubble volume fraction, turbulent kinetic energy, and turbulent kinetic energy dissipation. Bubble dispersion behavior was found to be a complex function of industrial operations and sparger configuration parameters.