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RESEARCH PAPER

Influence of Entrance Geometry on Heat Transfer in Rotating Rectangular Cooling Channels (AR=4:1) With Angled Ribs

[+] Author and Article Information
Lesley M. Wright, Wen-Lung Fu, Je-Chin Han

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

J. Heat Transfer 127(4), 378-387 (Mar 30, 2005) (10 pages) doi:10.1115/1.1860564 History: Received October 27, 2003; Revised March 24, 2004; Online March 30, 2005
Copyright © 2005 by ASME
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References

Figures

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Orientation of a narrow rectangular channel in a gas turbine blade
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Schematic of the heated portion of the 4:1 test section
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Cross-sectional view of the various entrance configurations
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Flow conceptualization: (a) secondary flow induced by 45° angled ribs; and (b) vortices induced by rotation in a narrow, rectangular channel
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Nusselt number ratios in smooth channels with Re=10,000
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Nusselt number ratio comparison of smooth channels with varied entrances
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Nusselt number ratios in angled rib channels with Re=10,000
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Channel-averaged nusselt number ratio for stationary cases
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Streamwise-averaged Nusselt number ratios in smooth channels
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Streamwise-averaged Nusselt number ratios in angled rib channels
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Channel-averaged Nusselt number ratios in rotating and stationary channels with varying entrances

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