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Alternating heat transfer between objects of large geometrical difference
journal contribution
posted on 2007-02-16, 00:00 authored by Weimin Gao, Lingxue KongLingxue Kong, Peter HodgsonPeter HodgsonThe heat transfer on the surface of an object in a gas fluidised bed is sequentially and alternately induced by particle-packet and gas bubble. This phenomenon is studied with computational simulation. The particle-packet and bubble are modelled by a double particle-layers and porous medium model and a hemispherical model, respectively. The heat transfer to and within the object is simulated concurrently. Different grid schemes are applied and different grid sizes are used in meshing the particle-packet and the object as there is a very large difference in their geometrical sizes. Based on theoretical analysis, an approximate method is developed to calculate the heat flux at the surface of the object. The simulation is implemented in a CFD package and the results are compared with experiments.
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Journal
Advances in engineering softwareVolume
38Issue
11-12Pagination
818 - 825Publisher
Elsevier Applied ScienceLocation
Barking, Essex, EnglandPublisher DOI
ISSN
0965-9978Language
engPublication classification
C1 Refereed article in a scholarly journalCopyright notice
2007, Elsevier LtdUsage metrics
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