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TECHNICAL PAPERS: Forced Convection

New Theory for Forced Convection Through Porous Media by Fluids With Temperature-Dependent Viscosity

[+] Author and Article Information
Arunn Narasimhan, José L. Lage

Laboratory for Porous Materials Applications, Mechanical Engineering Department, Southern Methodist University, Dallas, TX 75275-0337, USA

Donald A. Nield

Department of Engineering Science, University of Auckland, Private Bag 92019, Auckland, New Zealand

J. Heat Transfer 123(6), 1045-1051 (May 20, 2001) (7 pages) doi:10.1115/1.1409268 History: Received September 29, 2000; Revised May 20, 2001
Copyright © 2001 by ASME
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References

Figures

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Schematic of the flow channel considered for investigation
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Theoretical and numerical pressure-drop versus fluid-speed results for q=0.01 MW/m2
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Theoretical and numerical pressure-drop versus fluid-speed results for q=0.10 MW/m2
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Verification of the two criteria for accurate zero-order (top) and first-order (bottom) approximation results, Eq. (30)
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Velocity profiles u(y) from second-order HDD theory (left side profiles) and linear theory (right side profiles) for several heat fluxes
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Summary of longitudinal pressure-drop obtained by second-order HDD theory, Eq. (23), with numerical results for several heat fluxes
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Comparison of temperature profiles from second-order HDD theory, Eq. (24), with those of uniform viscosity case, for several heat fluxes
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Temperature profiles from second-order HDD theory and linear theory for Umax=9.84×10−2m/s, and q=0.01 MW/m2
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Comparison of Nusselt numbers obtained by the two theories as a function of λ, for several heat fluxes, q(MW/m2)
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Comparison of NuL, Eq. (38), obtained from theoretical results with numerical results

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