SUBGRID MODEL OF BUBBLE-FOAM-COUPLED TURBULENT FLOW

Abstract

 In this study, the novel LES-Stochastic model describing bubble rise, bubble-interface interactions, bubble cluster formations, coupled with turbulent fluid motion, has been proposed. The foam model, developed on the basis of the analytical solution of bubble-bubble mechanical interactions by Nicolson (1948), reasonably simulated oscillatory bubble behaviors beneath the interface and formations of the bubble clusters. These processes create additional turbulence near the interface and thus enhance surface renewal, which may contribute material transport between air and water.