Please use this identifier to cite or link to this item: http://hdl.handle.net/11422/8809
Type: Artigo
Title: Improved lumped models for transient heat conduction in a slab with temperature-dependent thermal conductivity
Author(s)/Inventor(s): Su, Ge
Tan, Zheng
Su, Jian
Abstract: Indisponível.
Abstract: This work reports improved lumped-parameter models for transient heat conduction in a slab with temperature-dependent thermal conductivity. The improved lumped models are obtained through two point Hermite approximations for integrals. For linearly temperature-dependent thermal conductivity, it is shown by comparison with numerical solution of the original distributed parameter model that the higher order lumped model (H1;1=H0;0 approximation) yields significant improvement of average temperature prediction over the classical lumped model. A unified Biot number limit depending on a single dimensionless parameter b is given both for cooling and heating processes.
Keywords: Transient heat conduction
Lumped models
Temperature-dependent thermal conductivity
Nonlinear heat conduction
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 Mathematical Modelling
Volume: 33
Issue: 1
Issue Date: 22-Nov-2007
DOI: 10.1016/j.apm.2007.11.007
Publisher country: Brasil
Language: eng
Right access: Acesso Aberto
ISSN: 0307-904X
Appears in Collections:Engenharias

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