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Titre :
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Two- and three-dimensional natural and mixed convection simulation using modular zonal models in buildings
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Auteurs :
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E. Wurtz ;
J. Nataf ;
F. Winkelmann
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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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1999
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Format :
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p. 923-940
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Langues:
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= Anglais
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Catégories :
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GENIE DES PROCEDES FRIGORIFIQUES
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Mots-clés:
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BATIMENT
;
SIMULATION
;
BILAN THERMIQUE
;
CIRCULATION DE L'AIR
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Résumé :
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We demonstrate the use of the zonal model approach, which is a simplified method for calculating natural and mixed convection in rooms. Zonal models use a coarse grid and use balance equations, state equations, hydrostatic pressure drop equations and power law equations of the form m = C P . The advantages of the zonal approach and its modular implementation are discussed. The zonal model resolution of nonlinear equation systems is demonstrated for three cases: a 2-D room, a 3-D room and a pair of 3-D rooms separated by a partition with an opening. A sensitivity analysis with respect to physical parameters and grid coarseness is presented. Results are compared to computational fluid dynamics (CPD) calculations and experimental data.
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Source :
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International journal of heat and mass transfer, vol.42, n°5
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