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TECHNICAL NOTES

Three-Dimensional Conjugate Heat Transfer in a Horizontal Channel With Discrete Heating

[+] Author and Article Information
Qinghua Wang, Yogesh Jaluria

Department of Mechanical and Aerospace Engineering, Rutgers, The State University of New Jersey, Piscataway, NJ 08854-8058

J. Heat Transfer 126(4), 642-647 (Mar 24, 2004) (6 pages) doi:10.1115/1.1773195 History: Received May 22, 2003; Revised March 24, 2004
Copyright © 2004 by ASME
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Figures

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The average temperature and the ratio of direct convection to total heat transfer (top figure), and the ratios of heat transfer in each direction to total heat transfer (bottom figure) from the heat sources at different spanwise spacings Sh, in the case of two spanwise-deployed sources, for Re=500, Gr=106,Wh=1, and rk=10. CD-UPS, DWS, WAL, and CNT represent heat conduction in the directions to the upstream, to the downstream, to the side-wall, and to the axis, respectively.
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(a) Geometrical configuration for three-dimensional flow in a duct with flush-mounted discrete heat sources; (b) stream-wise arrangement of sources; (c) spanwise arrangement of sources
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The distributions of temperature (top figure) and the local Nusselt number (bottom figure) on the fluid-solid interface, in the case of two streamwise-deployed heat sources, with Re=500, Gr=106,rk=50,Wh=1, and S=2
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The effect of axial spacing S between heat sources on the average temperature (top figure), the normalized average temperature (middle figure), and the normalized ratio of conductive heat transfer to total heat input (bottom figure) from the heat sources, in the case of two streamwise-deployed sources, for Re=500, Gr=106, and rk=50
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The effect of conductivity ratio rk on the average temperature (top figure) and ratio of conduction to total heat transfer of heat sources (bottom figure), in the case of two streamwise-deployed sources, at Re=500, Gr=106, and S=1. HEAT1 and HEAT2 represent the first and the second heat sources in the streamwise direction, respectively.
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Variations of the average temperature (top figure) and ratio of convection to total heat transfer (bottom figure) over heat sources, with Reynolds numbers, in the case of two streamwise-deployed sources, at Gr=106 and rk=10. HEAT1 and HEAT2 represent the first and the second heat sources in the streamwise direction, respectively.
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Variation of the average temperature with the spatial arrangement of the second heat source on the bottom, in the case of two streamwise-deployed sources, for Gr=106,rk=10,S=1, Re=100 (top figure), and Re=500 (bottom figure)
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The temperature distribution (top figure) and the local Nusselt number (bottom figure) on the fluidsolid interface, in the case of two spanwise-deployed sources, for Re=500, Gr=106,rk=10,Wh=1, and Sh=1

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