Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/75331
Type: Artigo de periódico
Title: Study of the interfacial forces and turbulence models in a bubble column
Author: Silva, MK
d'Avila, MA
Mori, M
Abstract: Three-dimensional Eulerian simulations of gas-liquid flows in a cylindrical bubble column were performed in order to evaluate the flow pattern in the heterogeneous flow regime. Simulations were conducted numerically by the finite element method using a commercial CFX code (v.12.0) and an analysis of interfacial forces such as drag, lift and turbulent dispersion, as well as a comparison of k-epsilon and Reynolds Stress (RSM) turbulence models were performed. Different bubble sizes and two boundary conditions for the column exit were also verified. Gas velocities and holdup profiles were compared with experimental data. Results have shown that at the sparger region and without any simplification on the boundary condition the RSM model better represents the flow. At the fully developed region k-epsilon also showed good results. (C) 2012 Elsevier Ltd. All rights reserved.
Subject: Bubble columns
CFD
Interfacial forces
Country: Inglaterra
Editor: Pergamon-elsevier Science Ltd
Rights: fechado
Identifier DOI: 10.1016/j.compchemeng.2012.04.007
Date Issue: 2012
Appears in Collections:Unicamp - Artigos e Outros Documentos

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