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TECHNICAL PAPERS

Experimental Heat Transfer and Bulk Air Temperature Measurements for a Multipass Internal Cooling Model With Ribs and Bleed

[+] Author and Article Information
Douglas Thurman

U.S. Army Research Laboratory, Glenn Research Center, Cleveland, OH 44135

Philip Poinsatte

National Aeronautics and Space Administration, Glenn Research Center, Cleveland, OH 44135

J. Turbomach 123(1), 90-96 (Feb 01, 2000) (7 pages) doi:10.1115/1.1333090 History: Received February 01, 2000
Copyright © 2001 by ASME
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References

Lau,  S. C., McMillan,  R. D., and Han,  J. C., 1991, “Heat Transfer Characteristics of Turbulent Flow in a Square Channel With Angled Discrete Ribs,” ASME J. Turbomach., 113, pp. 367–374.
Han,  J. C., 1988, “Heat Transfer and Friction Characteristics in Rectangular Channels With Rib Turbulators,” ASME J. Heat Transfer, 110, pp. 321–328.
Chyu,  M. K., 1991, “Regional Heat Transfer in Two-Pass and Three-Pass Passages With 180-deg Sharp Turns,” ASME J. Heat Transfer, 113, pp. 63–70.
Zhang,  Y. M., Gu,  W. Z., and Han,  J. C., 1994, “Heat Transfer and Friction in Rectangular Channels With Ribbed or Ribbed-Grooved Walls,” ASME J. Heat Transfer, 116, pp. 58–65.
Wang,  Z., Ireland,  P. T., Kohler,  S. T., and Chew,  J. W., 1998, “Heat Transfer Measurements to a Gas Turbine Cooling Passage With Inclined Ribs,” ASME J. Turbomach., 120, pp. 63–69.
Taslim,  M. E., and Spring,  S. D., 1994, “Effects of Turbulators Profile and Spacing on Heat Transfer and Friction in a Channel,” J. Thermophys. Heat Transfer, 8, pp. 555–562.
Taslim,  M. E., Li,  T., and Spring,  S. D., 1995, “Experimental Study of the Effects of Bleed Holes on Heat Transfer and Pressure Drop in Trapezoidal Passages With Tapered Turbulators,” ASME J. Turbomach., 117, pp. 281–289.
Shen,  J. R., Wang,  Z., Ireland,  P. T., Jones,  T. V., and Byerley,  A. R., 1996, “Heat Transfer Enhancement Within a Turbine Blade Cooling Passage Using Ribs and Combinations of Ribs With Film Cooling Holes,” ASME J. Turbomach., 118, pp. 483–434.
Ekkad, S. V., Huang, Y., and Han, J. C., 1996, “Detailed Heat Transfer Distributions in Two-Pass Smooth and Turbulated Square Channels With Bleed Holes,” in: Fundamentals of Augmented Single-Phase Convection, Proc. 1996 National Heat Transfer Conference, Vol. 8, ASME HTD-Vol. 330, pp. 133–140.
Rigby, D. L., Steinthorsson, E., and Ameri, A. A., 1997, “Numerical Prediction of Heat Transfer in a Channel With Ribs and Bleed,” ASME Paper No. 97-GT-431.
Stephens, M. A., Shih, T. I.-P., and Civinskas, K. C., 1995, “Computation of Flow and Heat Transfer in a Rectangular Channel With Ribs,” AIAA Paper No. 95-0180.
Bonhoff, B., Tomm, U., and Johnson, B. V., 1996, “Heat Transfer Predictions for U -Shaped Coolant Channels With Skewed Ribs and With Smooth Walls,” ASME Paper No. 96-TA-7.
McDonough, J. M., Garzon, V. E., and Schulte, D. E., 1999, “Effect of Film-Cooling Hole Location on Turbulator Heat Transfer Enhancement in Turbine Blade Internal Air-Cooling Circuits,” ASME Paper No. 99-GT-141.
Hippensteele, S. A., and Poinsatte, P. E., 1993, “Transient Liquid-Crystal Technique Used to Produce High-Resolution Convective Heat-Transfer-Coefficient Maps,” NASA TM-106083.
Kline,  S. J., and McClintock,  F. A., 1953, “Describing Uncertainties in Single-Sample Experiments,” Mech. Eng. (Am. Soc. Mech. Eng.), 75, pp. 3–8.

Figures

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Test section (units are in cm)
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(a) Static pressure measurement stations. (b) Air temperature measurement stations. (c) Air temperature measurement locations in first passage (units are in cm).
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(a) Inlet velocity profile. (b) Inlet airstream temperatures with uniform bleed at Re3.
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Airstream temperature measurements at various heights in first channel with uniform bleed at Re3: (a) z=0.64 cm. (b) z=1.91 cm. (c) z=3.18 cm. (d) z=4.45 cm.
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Airstream temperature throughout model, averaged spanwise across channel, Re3, no-bleed, midchannel height
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Test section static pressures; uniform bleed
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Surface heat transfer Nu/Nuo, for the case of ribs between holes: (a) Re1, no-bleed. (b) Re1, uniform-bleed. (c) Re1, increasing bleed. (d) Re1, decreasing bleed.
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Surface heat transfer, Nu/Nuo, for the case of ribs near holes: (a) Re1, no-bleed. (b) Re1, uniform-bleed. (c) Re1, increasing bleed. (d) Re1, decreasing bleed.
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Surface heat transfer, Nu/Nuo: (a) Re2, uniform-bleed, ribs between holes. (b) Re3, uniform-bleed, ribs between holes. (c) Re2, uniform-bleed, ribs near holes. (d) Re3, uniform-bleed, ribs near holes.
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Centerline heat transfer, uniform-bleed: (a) ribs between holes; (b) ribs near holes

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