Please use this identifier to cite or link to this item: http://hdl.handle.net/11422/8295
Type: Artigo
Title: Single domain integral transform analysis of natural convection in cavities partially filled with heat generating porous medium
Author(s)/Inventor(s): Lisboa, Kleber Marques
Su, Jian
Cotta, Renato Machado
Abstract: Indisponível.
Abstract: An analysis of natural convection within a rectangular cavity partially filled with a heat-generating porous medium is carried out through the Generalized Integral Transform Technique (GITT), in which the laminar flow and energy equations are solved with automatic error control. A single domain reformulation strategy is adopted to rewrite the governing equations within the fluid and the porous medium as a single heterogeneous medium formulation, with spatially variable physical properties and source terms that account for the abrupt transition of the two regions. This fundamental study is motivated by the analysis of wet storage of spent nuclear fuel elements with passive cooling of the pool and physical conclusions are drawn from the hybrid numerical-analytical solution. Increases in the Rayleigh number with constant internal heat generation are found to lower the maximum temperature within the cavity. Moreover, decreasing the aspect ratio also has positive effects on the cooling of the cavity.
Keywords: Heat flow
Fluid flow
Mathematical modeling
Darcy model
Navier–Stokes equations
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: Taylor & Francis
In: Numerical Heat Transfer, Part A Applications
Volume: 74
Issue: 3
Issue Date: 8-Oct-2018
DOI: 10.1080/10407782.2018.1511141
Publisher country: Brasil
Language: eng
Right access: Acesso Embargado
ISSN: 1521-0634
Appears in Collections:Engenharias

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