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TECHNICAL PAPERS: Forced Convection

Heat Transfer in Two-Pass Rotating Rectangular Channels (AR=2) With Five Different Orientations of 45 Deg V-Shaped Rib Turbulators

[+] Author and Article Information
Luai AL-Hadhrami, Todd Griffith, Je-Chin Han

Turbine Heat Transfer Laboratory, Department of Mechanical Engineering, Texas A&M University, College Station, Texas 77843-3123, USA

J. Heat Transfer 125(2), 232-242 (Mar 21, 2003) (11 pages) doi:10.1115/1.1561455 History: Received January 25, 2002; Revised November 08, 2002; Online March 21, 2003
Copyright © 2003 by ASME
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References

Figures

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Schematic of the rotating test rig
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Cross sectional view of the two-pass rectangular test section
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Conceptual view of secondary flow vortices induced by 45 deg angled ribs and 45 deg V-shaped ribs
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Conceptual view of the secondary flow vortices induced by rotation, ribs, and channel orientation (dash line: rotation-induced vortices, solid line: rib-induced vortices)
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Nusselt number ratio distribution for case (a)
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Nusselt number distribution for case (b)
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Nusselt number distribution for case (c)
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Nusselt number distribution for case (d)
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Nusselt number distribution for case (e)
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Nusselt number distribution for case (f)
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Averaged Nusselt number distribution for non-rotating (ω=0) cases
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Averaged Nusselt number distribution for leading and trailing surfaces with rotation (ω=550 rpm) for β=90 deg
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Averaged Nusselt number distribution for leading and trailing surfaces with rotation (ω=550 rpm) for β=135 deg

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