Journal of applied mechanics
Online ISSN : 1884-832X
Print ISSN : 1345-9139
ISSN-L : 1345-9139
Two-phase numerical model for air sparging simulation with modeling of acceleration terms
Nenad JACIMOVICTakashi HOSODAKiyoshi KISHIDAMarko IVETIC
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2006 Volume 9 Pages 765-771

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Abstract

The paper presents a numeical model for simulation of air sparging. Traditionalmultiphase theory with relative permeability concept has been extended by inclusionof acceleration terms. Resembled Navier-Stokes equations for both fluids (water andair) are solved by extension of the Highly Simplified Marker and Cell (HSMAC) method to two-phase flow case. The model is verified by application to the Buckley-Lewerett problem where excellent agreements with analytical solution are observed.Model is used for simulation of two-dimensional air sparging laboratoryexperiments conducted by Ji et al.(1993). In the case of 0.75mm glass beadsexperiment effect of acceleration term is found to be negligible, while in the secondcase of 4mm glass beads, significant effects were observed. The instability, manifesting as steady pulsation observed at 4mm beads, could be modeled only bymodeling of inertia terms in the governing equations.

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