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Author(s): J. D. P. Araújo
J. M. Miranda
J. B. L. M. Campos
Title: CFD Study of the Hydrodynamics of Slug Flow Systems: Interaction between Consecutive Taylor Bubbles
Issue Date: 2015
Abstract: Slug flow is one of the most frequently occurring multiphase flow patterns in industrial processes. Adeep knowledge of its fundamentals is necessary to accurately model not only the fluid flow but also reaction andheat and mass transfer in several operation units. Anumerical study is reported on the dynamics of slugflow, under laminar regime, in vertical columns of stagnant and co-current Newtonian and non-Newtonianliquids (shear-thickening and shear-thinning). A CFDpackage (Ansys FLUENT) with the VOF methodologywas applied to simulate the flow of individual and pairsof consecutive Taylor bubbles. The behaviour of the mostrelevant hydrodynamic features with the approach of thetrailing bubble towards the leading one is addressed,with particular emphasis to the role of the liquid rheologyand flow configuration. The main results presented arethe velocity ratio curves between consecutive bubbles,the variation of the bubbles shape, and the axial velocityand viscosity fields in the surrounding liquid. This bubble-bubble interaction data can be a keystone to improveand complement continuous slug flow simulators usedfor very long columns.
Document Type: Artigo em Revista Científica Internacional
Rights: restrictedAccess
Appears in Collections:FEUP - Artigo em Revista Científica Internacional

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