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Titre :
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Modeling the effective thermal conductivity of random packing of spheres through densification
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Auteurs :
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C. Argento ;
D. Bouvard
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Type de document :
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article/chapitre/communication
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Année de publication :
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1996
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Format :
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p.1343-1350
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Langues:
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= Anglais
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Catégories :
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SCIENCES FONDAMENTALES ET APPLIQUEES
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Mots-clés:
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CONDUCTIVITE THERMIQUE
;
MODELISATION
;
TRANSFERT DE CHALEUR
;
METHODE DES ELEMENTS FINIS
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Résumé :
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The thermal conductivity of densified random packing of spheres is studied. First, the resistance to heat flow of two touching deformed spheres is determined by finite element method. A discrete model is proposed to extend the single contact results to random packings of spheres. The packings are densified by expanding the particle radius. Finally a continuous analytical expression is proposed to describe the relation between the effective thermal conductivity and the relative density of the packing.
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Source :
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International journal of heat mass transfer, vol.39, n°7
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