Evaluation of S-Gamma and AMUSIG Models for Solving Population Balance Equation of Coupled Two-Fluid Model for Large Diameter Channel

摘要

In dispersed multiphase flow hydrodynamics, particle size and its distribution are vital parameters as the interfacial transfer terms and are closely related to the surface area of the dispersed particle. For predicting this parameter, several numerical models are available. Among the many models, S-gamma and adaptive-multiple-size-group (AMUSIG) models are the most popular. These two models, coupled with the Eulerian-Eulerian two-fluid approach, are adopted by STAR-CCM+. Present available numerical studies use the population balance equation (PBE) to simulate bubbly flows, and have been largely validated using data from small pipe flow conditions. There are significant hydrodynamic differences in flow characteristics of small and large diameter pipes. To overcome this research gap, this study evaluates the S-Gamma and AMUSIG models for predicting particle size distribution in a large diameter pipe.