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论文类型：期刊论文

发表时间：2016-12-01

发表刊物：CHEMICAL ENGINEERING & TECHNOLOGY

收录刊物：SCIE、EI、Scopus

卷号：39

期号：12

页面范围：2380-2388

ISSN号：0930-7516

关键字：Bubble dispersion; Bubble-column reactor; Bubble-liquid turbulent flow; Superficial gas velocity

摘要：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.