Numerical simulation of heat and mass transfer in fluidised bed heat treatment furnaces

Gao, Weimin, Kong, Lingxue and Hodgson, Peter 2002, Numerical simulation of heat and mass transfer in fluidised bed heat treatment furnaces, Journal of materials processing technology, vol. 125-126, no. 9, pp. 170-178, doi: 10.1016/S0924-0136(02)00372-2.

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Title Numerical simulation of heat and mass transfer in fluidised bed heat treatment furnaces
Author(s) Gao, WeiminORCID iD for Gao, Weimin orcid.org/0000-0002-7390-169X
Kong, LingxueORCID iD for Kong, Lingxue orcid.org/0000-0001-6219-3897
Hodgson, Peter
Journal name Journal of materials processing technology
Volume number 125-126
Issue number 9
Start page 170
End page 178
Publisher Elsevier
Place of publication Amsterdam, Netherlands
Publication date 2002-09-09
ISSN 0924-0136
1873-4774
Keyword(s) heat treatment
fluidised beds
simulation
heat and mass transfer
radiation
convection
Summary In this paper, a novel combined theoretical and computational model is developed to simulate the heat and mass transfer between a fluidised bed and a workpiece surface, and within the workpiece by considering the fluidised bed as a medium consisting of a double-particle layer and an even porous layer. The heat and mass-transfer flux from the fluidised bed to the workpiece surface is contributed by dense and bubble phases, respectively. The convective heat and mass transfer is simulated by analysing the gas dynamics in the fluidised bed, while radiative heat transfer is modelled by simulating photon emission in a three-dimensional particle array. The simulation shows that convection is approximately constant, while radiation contributes significantly to the heat transfer. The heat-transfer coefficient on an immersed surface near particles is about 6–10 times that on other areas. The transient heat and mass-transfer coefficient, heat and mass-transfer flux on any surface of the workpiece, transient temperature and carbon distributions at any position of the workpiece during the metal carburising process are studied with the simulation.
Notes Available online 6 September 2002.
Language eng
DOI 10.1016/S0924-0136(02)00372-2
Field of Research 091505 Heat and Mass Transfer Operations
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2002, Elsevier Science B.V.
Persistent URL http://hdl.handle.net/10536/DRO/DU:30001745

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