Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/8391
Title: Cluster-based drag coefficient model for simulating gas-solid flow in a fast-fluidized bed
Authors: Zou, LM
Guo, YC
Chan, CK 
Keywords: Cluster
Drag coefficient
Fast-fluidized bed
Gas-solid flows
Multiphase flow
Voidage
Issue Date: 2008
Publisher: Pergamon Press
Source: Chemical Engineering Science, 2008, v. 63, no. 4, p. 1052-1061 How to cite?
Journal: Chemical engineering science 
Abstract: Drag coefficient is of essential importance for simulation of heterogeneous gas-solid flows in fast-fluidized beds, which is greatly affected by their clustering nature. In this paper, a cluster-based drag coefficient model is developed using a hydrodynamic equivalent cluster diameter for calculating Reynolds number of the particle phase. Numerical simulation is carried out in a gas-solid fast-fluidized bed with an Eulerian-Lagrangian approach and the gaseous turbulent flow is simulated using large eddy simulation (LES). A Lagrange approach is used to predict the properties of particle phase from the equation of motion. The collisions between particles are taken into account by means of direct simulation Monte Carlo (DSMC) method. Compared with the drag coefficient model proposed by Wen and Yu, results predicted by the cluster-based drag coefficient model are in good agreement with experimental results, indicating that the cluster-based drag coefficient model is suitable to describe various statuses in fast-fluidized beds.
URI: http://hdl.handle.net/10397/8391
ISSN: 0009-2509
DOI: 10.1016/j.ces.2007.11.002
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

18
Last Week
0
Last month
0
Citations as of Aug 13, 2017

WEB OF SCIENCETM
Citations

16
Last Week
0
Last month
0
Citations as of Aug 12, 2017

Page view(s)

33
Last Week
1
Last month
Checked on Aug 13, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.