Please use this identifier to cite or link to this item: http://hdl.handle.net/11422/8617
Type: Artigo
Title: Improved lumped models for transient combined convective and radiative cooling of multi-layer composite slabs
Author(s)/Inventor(s): An, Chen
Su, Jian
Abstract: Indisponível.
Abstract: Improved lumped parameter models were developed for the transient heat conduction in multi-layer composite slabs subjected to combined convective and radiative cooling. The improved lumped models were obtained through two-point Hermite approximations for integrals. Transient combined convective and radiative cooling of three-layer composite slabs was analyzed to illustrate the applicability of the proposed lumped models, with respect to different values of the Biot numbers, the radiationconduction parameter, the dimensionless thermal contact resistances, the dimensionless thickness, and the dimensionless thermal conductivity. It was shown by comparison with numerical solution of the original distributed parameter model that the higher order lumped model (H1,1/H0,0 approximation) yielded significant improvement of average temperature prediction over the classical lumped model. In addition, the higher order (H1,1/H0,0) model was applied to analyze the transient heat conduction problem of steel-concrete-steel sandwich plates.
Keywords: Transient heat conduction
Lumped model
Multi-layer composite slabs
Radiative cooling
Convective cooling
Wall heat transfer
Subject CNPq: CNPQ::CIENCIAS EXATAS E DA TERRA::FISICA::AREAS CLASSICAS DE FENOMENOLOGIA E SUAS APLICACOES::DINAMICA DOS FLUIDOS
Department : Núcleo Interdisciplinar de Dinâmica dos Fluidos
Publisher: Elsevier
In: Applied Thermal Engineering
Volume: 31
Issue: 14-15
Issue Date: 16-Apr-2011
DOI: 10.1016/j.applthermaleng.2011.04.016
Publisher country: Brasil
Language: eng
Right access: Acesso Aberto
ISSN: 1359-4311
Appears in Collections:Engenharias

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