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Computation of conjugate heat transfer in the turbulent mixed convection regime in a vertical channel with multiple heat sources
Roy N. Mathews, ,
Published in
2007
Volume: 43
   
Issue: 10
Pages: 1063 - 1074
Abstract
This paper presents the results of a comprehensive numerical study to analyze conjugate, turbulent mixed convection heat transfer from a vertical channel with four heat sources, uniformly flush-mounted to one of the channel walls. The results are presented to study the effect of various parameters like thermal conductivity of wall material (k s), thermal conductivity of flush-mounted discrete heat source (k c), Reynolds number of fluid flow (Re s), modified Richardson number (Ri +) and aspect ratio (AR) of the channel. The standard k-ε turbulence model, modified by including buoyancy effects with physical boundary conditions, i.e. without wall functions, has been used for the analysis. Semi-staggered, non-uniform grids are used to discretise the two dimensional governing equations, using finite volume method. A correlation, encompassing a wide range of parameters, is developed for the non-dimensional maximum temperature (T *) using the asymptotic computational fluid dynamics (ACFD) technique. © Springer-Verlag 2007.
About the journal
JournalHeat and Mass Transfer/Waerme- und Stoffuebertragung
ISSN09477411
Open AccessNo
Concepts (11)
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    Aspect ratio
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    Channel flow
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    Heat transfer
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    Parameter estimation
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    Reynolds number
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    Turbulent flow
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    Heat sources
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    Richardson number
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    TURBULENT MIXED CONVECTION
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    VERTICAL CHANNELS
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    Mixed convection