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TECHNICAL PAPERS: Forced Convection

Heat Transfer in Rotating Rectangular Cooling Channels (AR=4) With Angled Ribs

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

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

J. Heat Transfer 124(4), 617-625 (Jul 16, 2002) (9 pages) doi:10.1115/1.1471525 History: Received August 14, 2001; Revised February 14, 2002; Online July 16, 2002
Copyright © 2002 by ASME
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References

Figures

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Sketch illustrating orientation of a 4:1 aspect ratio channel in a gas turbine blade
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Schematic of experimental rotating test rig
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Schematic of 4:1 test section
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Outward flow rectangular test section with: (a) smooth walls; and (b) 45 deg parallel ribs on leading and trailing surfaces.
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Nusselt number ratio for stationary smooth case
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Nusselt number ratio for rotation smooth case with β=90 deg
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Nusselt number ratio for rotation smooth case with β=135 deg
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Nusselt number ratio for stationary ribbed case
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Nusselt number ratio for rotation ribbed case with β=90 deg
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Nusselt number ratio for rotation ribbed case with β=135 deg
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Streamwise averaged Nusselt number ratio for smooth channel
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Streamwise averaged Nusselt number ratio for ribbed channel

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