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TECHNICAL PAPERS: Natural and Mixed Convection

Experimental and Numerical Study of Conjugate Heat Transfer in a Horizontal Channel Heated From Below

[+] Author and Article Information
Wilson K. S. Chiu, Cristy J. Richards, Yogesh Jaluria

Department of Mechanical and Aerospace Engineering, Rutgers, The State University of New Jersey, New Brunswick, NJ 08903

J. Heat Transfer 123(4), 688-697 (Feb 01, 2001) (10 pages) doi:10.1115/1.1372316 History: Received August 16, 1999; Revised February 01, 2001
Copyright © 2001 by ASME
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References

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Sugavanam,  R. A., Ortega,  A., and Choi,  C. Y., 1995, “A Numerical Investigation of Conjugate Heat Transfer from a Flush Heat-Source on a Conductive Board in Laminar Channel Flow,” Int. J. Heat Mass Transf., 38, pp. 2969–2984.
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Figures

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Diagram of the experimental system
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Cross sectional view of the heated region (susceptor) assembly
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Boundary conditions and parameters used in the numerical model. The heated region is labeled as the susceptor.
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Comparison between experimental observations and numerical predictions of streamlines for a ceramic heated region at (a) Re=9.48 and (b) Re=29.7
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Thermal plume generation as characterized by flow separation at various Gr/Re2
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Flow separation dependence on conjugate parameters. Flow separation predicted by the non-conjugate model is Xsep,nc=4.67.
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(a) Streamline and temperature contours and (b) experimental temperature data comparison (symbols) with numerically predicted results for an aluminum heated region
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Surface temperature comparisons for a ceramic heated region
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Effect of heated region (susceptor) material on surface temperature distribution
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Deviation of average heated region temperature from the non-conjugate case (θavg,nc=0.229)
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Heated region temperature uniformity dependence on solid material thickness (Hs), heated region thermal conductivity (Ksus) and insulation thermal conductivity (Kinsul)
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Fraction of thermal energy across the heated region surface as compared to non-conjugate modeling

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