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Numerical study of solid–liquid fluidization dynamics

Gevrin, Frédéric and Masbernat, Olivier and Simonin, Olivier Numerical study of solid–liquid fluidization dynamics. (2010) AIChE Journal, vol. 56 (n° 11). pp. 2781-2794. ISSN 0001-1541

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Official URL: http://dx.doi.org/10.1002/AIC.12209

Abstract

A numerical model based on the kinetic theory of granular media has been tested to simulate the unsteady two-phase flow in solid–liquid fluidized beds. We focus here on the local unsteady flow features as predicted by the model and comparison with experimental data of Zenit and Hunt (2000) are discussed. In most of the cases, a series of two-dimensional rotational structures develops along the bed height, which controls the instantaneous solid fraction field as well as the level of fluctuating kinetic energy of the particles. Interestingly, with high inertia particles and at high solid concentration, these structures disappear to the benefit of a one-dimensional oscillating flow. The shape of these concentration waves is very similar to those previously observed by Nicolas et al. (1999) and Duru et al. (2002). The solid fraction density spectrum and variance have been analyzed and compared with the experimental data of Zenit and Hunt.

Item Type:Article
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Institut National des Sciences Appliquées de Toulouse - INSA
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
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Deposited By: Audrey LEFEVRE
Deposited On:01 Jun 2012 15:39

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