Title
A comparative assessment of empirical and lattice Boltzmann method-based drag models for simulation of gas–solid flow hydrodynamics in a bubbling fluidized bed
Date Issued
01 August 2017
Access level
metadata only access
Resource Type
journal article
Author(s)
UNESP – São Paulo State University
UNESP – São Paulo State University
Publisher(s)
Elsevier B.V.
Abstract
In simulations of fluidized beds using computational fluid dynamics (CFD), the description of gas–solid flow hydrodynamics relies on a drag model to account for the momentum transfer between gas and solid phases. Although several studies of drag models have been published, there have been few investigations of the application of lattice Boltzmann method (LBM)-based drag models to bubbling fluidized bed simulations. In the present study, a comprehensive comparison of empirical and LBM-based drag models was carried out to assess the performance of these models during simulations of gas–solid flow hydrodynamics in a bubbling fluidized bed. A CFD model using the MFIX code based on the Eulerian–Eulerian approach and the kinetic theory of granular flow was used to simulate a 2D bubbling fluidized bed with Geldart B particles. The simulation results were validated by comparison with experimental data. Statistical analysis of the results shows that LBM-based drag models can reliably model gas–solid flow hydrodynamics in a bubbling fluidized bed.
Start page
129
End page
137
Volume
33
Language
English
OCDE Knowledge area
Gastroenterología, Hepatología
Subjects
Scopus EID
2-s2.0-85018893635
Source
Particuology
ISSN of the container
16742001
Sources of information:
Directorio de Producción Científica
Scopus