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Research Papers

Heat Transfer in Rotating Serpentine Coolant Passage With Ribbed Walls at Low Mach Numbers

[+] Author and Article Information
Shang-Feng Yang

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

Je-Chin Han

Turbine Heat Transfer Laboratory,
Mechanical Engineering Department,
Texas A&M University,
College Station, TX 77843-3123
e-mail: jc-han@tamu.edu

Salam Azad, Ching-Pang Lee

Siemens Energy, Inc.,
4400 Alafaya Trail,
Orlando, FL 32826

Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF THERMAL SCIENCE AND ENGINEERING APPLICATIONS. Manuscript received March 23, 2014; final manuscript received October 3, 2014; published online November 25, 2014. Assoc. Editor: Srinath V. Ekkad.

J. Thermal Sci. Eng. Appl 7(1), 011013 (Mar 01, 2015) (11 pages) Paper No: TSEA-14-1056; doi: 10.1115/1.4028905 History: Received March 23, 2014; Revised October 03, 2014; Online November 25, 2014

This paper experimentally investigates the effect of rotation on heat transfer in typical turbine blade serpentine coolant passage with ribbed walls at low Mach numbers. To achieve the low Mach number (around 0.01) condition, pressurized Freon R-134a vapor is utilized as the working fluid. The flow in the first passage is radial outward, after the 180 deg tip turn the flow is radial inward to the second passage, and after the 180 deg hub turn the flow is radial outward to the third passage. The effects of rotation on the heat transfer coefficients were investigated at rotation numbers up to 0.6 and Reynolds numbers from 30,000 to 70,000. Heat transfer coefficients were measured using the thermocouples-copper-plate-heater regional average method. Heat transfer results are obtained over a wide range of Reynolds numbers and rotation numbers. An increase in heat transfer rates due to rotation is observed in radially outward passes; a reduction in heat transfer rate is observed in the radially inward pass. Regional heat transfer coefficients are correlated with Reynolds numbers for nonrotation and with rotation numbers for rotating condition, respectively. The results can be useful for understanding real rotor blade coolant passage heat transfer under low Mach number, medium–high Reynolds number, and high rotation number conditions.

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References

Han, J. C., and Huh, M., 2010, “Recent Studies in Turbine Blade Internal Cooling,” Heat Transfer Res., 41(8), pp. 801–828. [CrossRef]
Han, J. C., Dutta, S., and Ekkad, S. V., 2000, Gas Turbine Heat Transfer and Cooling Technology, Taylor and Francis, New York.
Fu, L. W., Wright, L. M., and Han, J. C., 2006, “Buoyancy Effects on Heat Transfer in Five Different Aspect-Ratio Rectangular Channels With Smooth Walls and 45 Degree Ribbed Walls,” ASME J. Heat Transfer, 128(11), pp. 1130–1141. [CrossRef]
Han, J. C., Glicksman, L. R., and Rohsenow, W. M., 1978, “An Investigation of Heat Transfer and Friction for Rib-Roughened Surfaces,” Int. J. Heat Mass Transfer, 21(8), pp. 1143–1156. [CrossRef]
Han, J. C., Park, J. S., and Lei, C. K., 1985, “Heat Transfer Enhancement in Channels With Turbulence Promoters,” ASME J. Eng. Gas Turbines Power, 107(1), pp. 628–635. [CrossRef]
Han, J. C., 1988, “Heat Transfer and Friction Characteristics in Rectangular Channels With Rib Turbulators,” ASME J. Heat Transfer, 110(2), pp. 321–328. [CrossRef]
Han, J. C., and Park, J. S., 1988, “Developing Heat Transfer in Rectangular Channels With Rib Turbulators,” Int. J. Heat Mass Transfer, 31(1), pp. 183–195. [CrossRef]
Taslim, M. E., and Lengkong, A., 1998, “45-Degree Staggered Rib Heat Transfer Coefficient Measurements in a Square Channel,” ASME J. Turbomach., 120(3), pp. 571–580. [CrossRef]
Rallabandi, A. P., Alkhamis, N., and Han, J. C., 2011, “Heat Transfer and Pressure Drop Measurements for a Square Channel with 45° Round Edged Ribs at High Reynolds Numbers,” ASME J. Turbomach, 133(3), p. 031019. [CrossRef]
Wagner, J. H., Johnson, B. V., and Kopper, F. C., 1991, “Heat Transfer in Rotating Serpentine Passages With Smooth Walls,” ASME J. Turbomach., 113(3), pp. 321–330. [CrossRef]
Johnson, B. V., Wagner, J. H., Steuber, G. D., and Yeh, F. C., 1994, “Heat Transfer in Rotating Serpentine Passages With Trips Skewed to the Flow,” ASME J. Turbomach., 116(1), pp. 113–123. [CrossRef]
Han, J. C., Zhang, Y. M., and Kalkuehler, K., 1993, “Uneven Wall Temperature Effect on Local Heat Transfer in a Rotating Two-Pass Square Channel With Smooth Walls,” ASME J. Heat Transfer, 114(4), pp. 850–858. [CrossRef]
Zhang, Y. M., Han, J. C., Parsons, J. A., and Lee, C. P., 1995, “Surface Heating Effect on Local Heat Transfer in a Rotating Two-Pass Square Channel With 60-Degree Angled Rib Turbulators,” ASME J. Turbomach., 117(2), pp. 272–278. [CrossRef]
Johnson, B. V., Wagner, J. H., Steuber, G. D., and Yeh, F. C., 1994, “Heat Transfer in Rotating Serpentine Passages With Selected Model Orientations for Smooth or Skewed Tip Walls,” ASME J. Turbomach., 116(4), pp. 738–744. [CrossRef]
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(3), pp. 578–584. [CrossRef]
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-deg Angled Rib Turbulators,” ASME J. Turbomach., 124(2), pp. 251–259. [CrossRef]
Wright, L. M., Liu, Y. H., Han, J. C., and Chopra, S., 2008, “Heat Transfer in Trailing Edge Wedge-Shaped Cooling Channels Under High Rotation Numbers,” ASME J. Heat Transfer, 130(7), p. 071701. [CrossRef]
Zhou, F., and Acharya, S., 2008, “Heat Transfer at High Rotation Numbers in a Two-Pass 4:1 Aspect Ratio Rectangular Channel With 45 deg Skewed Ribs,” ASME J. Turbomach., 130(2), p. 021019. [CrossRef]
Liu, Y. H., Huh, M., Han, J. C., and Moon, H. K., 2010, “High Rotation Number Effect on Heat Transfer in a Triangular Channel With 45°, Inverted 45°, and 90° Ribs,” ASME J. Heat Transfer, 132(7), p. 071702. [CrossRef]
Huh, M., Lei, J., and Han, J. C., 2012, “Influence of Channel Orientation on Heat Transfer in a Two-Pass Smooth and Ribbed Rectangular Channel (AR = 2:1) Under Large Rotation Numbers,” ASME J. Turbomach., 134(1), p. 011022. [CrossRef]
Liu, Y. H., Huh, M., Han, J. C., and Chopra, S., 2008, “Heat Transfer in a Two-Pass Rectangular Channel (AR = 1:4) Under High Rotation Numbers,” ASME J. Heat Transfer, 130(8), p. 081701. [CrossRef]
Huh, M., Lei, J., Liu, Y. H., and Han, J. C., 2011, “High Rotation Number Effects on Heat Transfer in a Rectangular (AR = 2:1) Two-Pass Channel,” ASME J. Turbomach., 113(2), p. 021001. [CrossRef]
Wright, L. M., Fu, W. L., and Han, J. C., 2005, “Influence of Entrance Geometry on Heat Transfer in Rotating Rectangular Cooling Channels (AR = 4:1) With Angled Ribs,” ASME J. Heat Transfer, 127(4), pp. 378–387. [CrossRef]
Fu, W. L., Wright, L. M., and Han, J. C., 2005, “Heat Transfer in Two-Pass Rotating Rectangular Channels (AR = 1:2 and AR = 1:4) With 45° Angled Rib Turbulators,” ASME J. Turbomach., 127(1), pp. 164–174. [CrossRef]
Kays, W., Crawford, M., and Weigand, B., 2005, Convection Heat and Mass Transfer, McGraw-Hill, New York.
Rallabandi, A., Lei, J., Han, J. C., Azad, S., and Lee, C. P., 2013, “Heat Transfer Measurements in Rotating Blade-Shape Serpentine Coolant Passage With Ribbed Walls at High Reynolds Numbers,” ASME J. Turbomach., 136(9), p. 091004. [CrossRef]
McEligot, D., and Jackson, J., 2004. “Deterioration Criteria for Convective Heat Transfer in Gas Flow Through Non-Circular Ducts,” Nucl. Eng. Des., 232(3), pp. 327–333. [CrossRef]
Lee, J., Hejzlar, P., Saha, P., Stahle, P., Kazimi, M., and McEligot, D., 2008, “Deteriorated Turbulent Heat Transfer (DTHT) of Gas Up-Flow in a Circular Tube: Experimental Data,” Int. J. Heat Mass Transfer, 51(13-14), pp. 3259–3266. [CrossRef]

Figures

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Fig. 1

Common internal cooling technique in advanced gas turbine blades

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Fig. 2

Typical turbine blade internal cooling channel with rotation-induced vortices

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Fig. 3

Schematic of rotating facility

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Fig. 4

(a) Internal view of test section on pressure surface and (b) cross section view of serpentine internal flow channels

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Fig. 5

Schematic of serpentine internal coolant passages with 45 deg angled rib arrangement

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Fig. 6

Refrigerant R134a vapor working loop schematic

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Fig. 7

Re effect: variation of Nu/Nu0 at channel midregions

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Fig. 8

Re effect: variation of Nu/Nu0 at channel tip and hub turn regions

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Fig. 9

Effect on rotation on the variation of internal Nu/Nu0 along the three passage serpentine channel (a) stationary and (b) 300 RPM rotating

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Fig. 10

Ro effect: variation of Nu/Nus at channel midregions

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Fig. 11

Ro effect: variation of Nu/Nus at channel tip and hub turn regions

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