Please use this identifier to cite or link to this item: http://hdl.handle.net/11422/8545
Type: Artigo
Title: Theoretical analysis of conjugated heat transfer with a single domain formulation and integral transforms
Author(s)/Inventor(s): Knupp, Diego Campos
Naveira-Cotta, Carolina Palma
Cotta, Renato Machado
Abstract: Indisponível.
Abstract: The present work advances an analytical approach for conjugated conduction-convection heat transfer problems, by proposing a single domain formulation for modeling both the fluid stream and the channel wall regions. Making use of coefficients represented as space variable functions with abrupt transitions occurring at the fluid-wall interface, the mathematical model is fed with the information concerning the transition of the two domains, unifying the model into a single domain formulation with space variable coefficients. The Generalized Integral Transform Technique (GITT) is then employed in the hybrid numerical-analytical solution of the resulting convection-diffusion problem with variable coefficients, and critically compared for two alternative solution paths. A test problem is chosen that offers an exact solution for validation purposes, based on the extended Graetz problem including transversal conduction across the channel walls. The excellent agreement between approximate and exact solutions demonstrates the feasibility of the approach in handling more involved conjugated problems.
Keywords: Conjugated heat transfer
Laminar channel flow
Single domain formulation
Integral transforms
Graetz problem
Internal convection
Subject CNPq: CNPQ::CIENCIAS EXATAS E DA TERRA::FISICA::AREAS CLASSICAS DE FENOMENOLOGIA E SUAS APLICACOES::DINAMICA DOS FLUIDOS
Production unit: Núcleo Interdisciplinar de Dinâmica dos Fluidos
Publisher: Elsevier
In: International Communications in Heat and Mass Transfer
Volume: 39
Issue: 3
Issue Date: 9-Jan-2012
DOI: 10.1016/j.icheatmasstransfer.2011.12.012
Publisher country: Brasil
Language: eng
Right access: Acesso Aberto
ISSN: 0735-1933
Appears in Collections:Engenharias

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