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TECHNICAL NOTES

Constructal Placement of High-Conductivity Inserts in a Slab: Optimal Design of “Roughness”

[+] Author and Article Information
M. Neagu, A. Bejan

Department of Mechanical Engineering and Materials Science, Box 90300, Duke University, Durham, NC 27708-0300

J. Heat Transfer 123(6), 1184-1189 (Feb 22, 2001) (6 pages) doi:10.1115/1.1392988 History: Received November 22, 1999; Revised February 22, 2001
Copyright © 2001 by ASME
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References

Figures

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The minimized global thermal resistance of systems with optimized plates and pins inserts, using the same amounts and types of conducting materials (k̃,ϕ)
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Top: The smallest robustness ratio for pin inserts. Middle: The relative penetration length of pin inserts. Bottom: The minimized global thermal resistance of systems with optimized plates and pins inserts, using the same amounts and types of conducting materials (k̃,ϕ).
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Cylindrical model for the three-dimensional conduction around pin-shaped inserts of high thermal conductivity.
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Top: The smallest robustness ratio for plate inserts. Middle: The relative penetration length of plate inserts. Bottom: The relative spacing between plate inserts.
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Constant-thickness plate inserts that penetrate partially the heated body, and the smallest dimensions cutoff: the minimized global resistance can be reduced by making the plate inserts sufficiently slender.
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Two-dimensional inserts of high conductivity for cooling a body heated from the side

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