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TECHNICAL PAPERS

Heat Transfer in Two-Pass Rotating Rectangular Channels (AR=1:2 and AR=1:4) With 45 Deg Angled Rib Turbulators

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

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

J. Turbomach 127(1), 164-174 (Feb 09, 2005) (11 pages) doi:10.1115/1.1791649 History: Received October 01, 2003; Revised March 01, 2004; Online February 09, 2005
Copyright © 2005 by ASME
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References

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Figures

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Typical turbine blade internal cooling passages
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Schematic of the test rig
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Geometry of the test section
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Cross-sectional view of the test section (AR=1:2)
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Temperatures and net heat flux distributions on leading and trailing surfaces
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Conceptual view of the secondary flow patterns (AR=1:4)
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Nusselt number ratio distribution for AR=1:2 with 45 deg angled ribs
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Nusselt number ratio distribution for AR=1:4 with 45 deg angled ribs
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Averaged Nusselt number ratio for both rotating and nonrotating cases
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Comparison of the Nusselt number ratio distributions for AR=1:2 with smooth walls
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Comparison of the Nusselt number ratio distributions for AR=1:2 with ribbed walls
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Secondary flow effect on circumferential heat transfer (Re=10,000) (number represents the Nusselt number ratio)
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Aspect ratio effect on heat transfer (β=90 deg)
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Aspect ratio effect on heat transfer (β=90 deg, 45 deg, and 135 deg)

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