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Three dimensional thermal conduction of randomly packed beds of porous cylindrical ceria pellets immersed in carbon dioxide with effects of deviations of pellet porosities and sizes
YanSu
2019
Source PublicationPowder Technology
ISSN0032-5910
Volume349Pages:21-39
Abstract

Structures of randomly packed beds of cylindrical shape porous pellets composed of tiny ceria (CeO2) particleswith wide rangesof pellet porosities and number density probabilities are generated byan improvedcontrollable structure generation scheme (CSGS) including deviations of both pellet porosities and sizes. Three dimensional (3D) mesoscopic scale thermal conduction through the structures immersed in carbon dioxide (CO2)gasissim-ulated by a parallel non-dimensional lattice Boltzmann method (P-NDLBM). Effective thermal conductivity (ETC) in each direction and 3D temperature distributions with effects of pellet number density probabilities, porosities, and deviations are illustrated. Althoughthepelletnumber density probability and pellet porosity are equivalently important for changing of macroscopic global porosity, they have different effects on temperature distribution patterns and the overall ETC. A new form of ETC correlation related to the pellet number density probability and pellet porosity is proposed. The present ETC correlation based on the two pellet parameters shows a slight improvement comparing to conventional forms based on the macroscopic global porosity.

KeywordMacroscopic Porosity Number Density Probability Pellet Porosity P-ndlbm
DOIhttps://doi.org/10.1016/j.powtec.2019.03.006
Indexed By其他
Language英语
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Document TypeJournal article
CollectionFaculty of Science and Technology
DEPARTMENT OF ELECTROMECHANICAL ENGINEERING
AffiliationDepartment of Electromechanical Engineering, FST, University of Macau, Taipa, Macau
First Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
YanSu. Three dimensional thermal conduction of randomly packed beds of porous cylindrical ceria pellets immersed in carbon dioxide with effects of deviations of pellet porosities and sizes[J]. Powder Technology,2019,349:21-39.
APA YanSu.(2019).Three dimensional thermal conduction of randomly packed beds of porous cylindrical ceria pellets immersed in carbon dioxide with effects of deviations of pellet porosities and sizes.Powder Technology,349,21-39.
MLA YanSu."Three dimensional thermal conduction of randomly packed beds of porous cylindrical ceria pellets immersed in carbon dioxide with effects of deviations of pellet porosities and sizes".Powder Technology 349(2019):21-39.
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