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TECHNICAL PAPERS: Forced Convection

Heat Transfer in Two-Pass Rotating Rectangular Channels (AR=1:2 and AR=1:4) With Smooth Walls

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

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

J. Heat Transfer 127(3), 265-277 (Mar 24, 2005) (13 pages) doi:10.1115/1.1857946 History: Received December 28, 2003; Revised September 08, 2004; Online March 24, 2005
Copyright © 2005 by ASME
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References

Han, J. C., Dutta, S., and Ekkad, S. V., 2000, Gas Turbine Heat Transfer and Cooling Technology, Taylor and Francis, New York.
Kays, W. M., and Crawford, M. E., 1993, Convective Heat and Mass Transfer, 3rd ed., McGraw–Hill, New York, pp. 311–349.
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Han,  J. C., Chandra,  P. R., and Lau,  S. C., 1988, “Local Heat/Mass Transfer in Distributions Around Sharp 180° Turns in Two-Pass Smooth and Rib-Roughened Channels,” ASME J. Heat Transfer, 110, pp. 91–98.
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Wagner,  J. H., Johnson,  B. V., and Kooper,  F. C., 1991b, “Heat Transfer in Rotating Passage with Smooth Walls,” ASME J. Turbomach., 113, pp. 321–330.
Johnson,  B. V., Wagner,  J. H., Steuber,  G. D., and Yeh,  F. C., 1994, “Heat Transfer in Rotating Serpentine Passage with Selected Model Orientations for Smooth or Skewed Trip Walls,” ASME J. Turbomach., 116, pp. 738–744.
Dutta,  S., and Han,  J. C., 1996, “Local Heat Transfer in Rotating Smooth and Ribbed Two-Pass Square Channels with Three Channel Orientations,” ASME J. Heat Transfer, 118, pp. 578–584.
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Bons,  J. P., and Kerrebrock,  J. L., 1999, “Complementary Velocity and Heat Transfer Measurements in a Rotating Cooling Passage with Smooth Walls,” ASME J. Turbomach., 121, pp. 651–662.
Azad,  G. S., Uddin,  M. J., Han,  J. C., Moon,  H. K., and Glezer,  B., 2002, “Heat Transfer in a Two-Pass Rectangular Rotating Channel with 45° Angled Rib Turbulators,” ASME J. Turbomach., 124, pp. 251–259.
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Acharya, S., Agarwal, P., and Nikitopoulos, D. E., 2004, “Heat/Mass Transfer in a 4:1 AR Smooth and Ribbed Coolant Passage with Rotation in 90° and 45° Orientations,” ASME Paper No. GT2004-53928.
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Su,  G., Chen,  H. C., Han,  J. C., and Heidmann,  D., 2004, “Computation of Flow and Heat Transfer in Rotating Two-Pass Rectangular Channels (AR=1:1, 1:2, and 1:4) by a Reynolds Stress Turbulence Model,” Int. J. Heat Mass Transfer, 47, pp. 5665-5683.

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: Smooth wall
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Cross-sectional view of the two-pass rectangular test section (AR=1:2)
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Conceptual view of the secondary flow patterns (AR=1:2)
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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 smooth wall
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Nusselt number ratio distribution for AR=1:4 with smooth wall
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Channel 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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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°)
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Aspect ratio and channel orientation effect on heat transfer (β=90°,45°, and 135°)

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