Research Papers

Stagnation Region Heat Transfer Augmentation at Very High Turbulence Levels

[+] Author and Article Information
J. E. Kingery

Raytheon Missile Systems,
1151 E. Hermans Road,
Tucson, AZ 85756
e-mail: kingery.joseph@gmail.com

F. E. Ames

Mechanical Engineering Department,
University of North Dakota,
Grand Forks, ND 58202
e-mail: forrest.ames@engr.und.edu

1Corresponding author.

Contributed by the International Gas Turbine Institute (IGTI) of ASME for publication in the JOURNAL OF TURBOMACHINERY. Manuscript received December 14, 2015; final manuscript received January 19, 2016; published online March 22, 2016. Editor: Kenneth C. Hall.The United States Government retains, and by accepting the article for publication, the publisher acknowledges that the United States Government retains, a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this work, or allow others to do so, for United States government purposes.

J. Turbomach 138(8), 081005 (Mar 22, 2016) (10 pages) Paper No: TURBO-15-1303; doi: 10.1115/1.4032677 History: Received December 14, 2015; Revised January 19, 2016

Current land-based gas turbines are growing in size producing higher approach flow Reynolds numbers at the leading edge of turbine nozzles. These vanes are subjected to high intensity large scale turbulence. This present paper reports on the research which significantly expands the parameter range for stagnation region heat transfer augmentation due to high intensity turbulence. Heat transfer measurements were acquired over two constant heat flux test surfaces with large diameter leading edges (10.16 cm and 40.64 cm). The test surfaces were placed downstream from a new high intensity (17.4%) mock combustor and tested over an eight to one range in approach flow Reynolds number for each test surface. Stagnation region heat transfer augmentation for the smaller (ReD = 15,625–125,000) and larger (ReD = 62,500–500,000) leading edge regions ranged from 45% to 81% and 80% to 136%, respectively. These data also include heat transfer distributions over the full test surface compared with the earlier data acquired at six additional inlet turbulence conditions. These surfaces exhibit continued but more moderate acceleration downstream from the stagnation regions and these data are expected to be useful in testing bypass transition predictive approaches. This database will be useful to gas turbine heat transfer design engineers.

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Van Fossen, G. J. , and Bunker, R. S. , 2001, “ Augmentation of Stagnation Region Heat Transfer Due to Turbulence From a DLN Can Combustor,” ASME J. Turbomach., 123(1), pp. 140–146. [CrossRef]
Medic, G. , and Durbin, P. A. , 2002, “ Toward Improved Prediction of Heat Transfer on Turbine Blades,” ASME J. Turbomach., 124(2), pp. 187–192. [CrossRef]
Gandaparavu, P. , and Ames, F. E. , 2012, “ The Influence of Leading Edge Diameter on Stagnation Region Heat Transfer Augmentation Including Effects of Turbulence Level, Scale, and Reynolds Number,” ASME J. Turbomach., 135(1), p. 011008. [CrossRef]
Zapp, G. M. , 1950, “ The Effect of Turbulence on Local Heat Transfer Coefficients Around a Cylinder Normal to an Air Stream,” Master's thesis, Oregon State College, Corvallis, OR.
Smith, M. C. , and Kuethe, A. M. , 1966, “ Effects of Turbulence on Laminar Skin Friction and Heat Transfer,” Phys. Fluids, 9(12), pp. 2337–2344. [CrossRef]
Kestin, J. , and Wood, R. T. , 1971, “ The Influence of Turbulence on Mass Transfer From Cylinders,” ASME J. Heat Transfer, 93(4), pp. 321–326. [CrossRef]
Lowery, G. W. , and Vachon, R. I. , 1975, “ The Effect of Turbulence on Heat Transfer From Heated Cylinders,” Int. J. Heat Mass Transfer, 18(11), pp. 1229–1242. [CrossRef]
Mehendale, A. B. , Han, J. C. , and Ou, S. , 1991, “ Influence of High Mainstream Turbulence on Leading Edge Heat Transfer,” ASME J. Heat Transfer, 113(4), pp. 843–850. [CrossRef]
Hunt, J. C. R. , 1973, “ A Theory of Turbulent Flow Round Two-Dimensional Bluff Bodies,” J. Fluid Mech., 61(4), p. 625. [CrossRef]
Britter, R. E. , Hunt, J. C. R. , and Mumford, J. C. , 1979, “ The Distortion of Turbulence by a Circular Cylinder,” J. Fluid Mech., 92(02), pp. 269–301. [CrossRef]
Sadeh, W. Z. , and Sullivan, P. P. , 1980, “ Turbulence Amplification in Flow About an Airfoil,” ASME Paper No. 80-GT-111.
Rigby, D. L. , and Van Fossen, G. J. , 1991, “ Increased Heat Transfer to a Cylindrical Leading Edge Due to Spanwise Variations in the Freestream Velocity,” AIAA Paper No. 91-1739.
Ames, F. E. , and Moffat, R. J. , 1990, “ Heat Transfer With High Intensity, Large Scale Turbulence: The Flat Plate Turbulent Boundary Layer and the Cylindrical Stagnation Point,” Ph.D. dissertation, Stanford University, Stanford, CA, HMT-44.
Van Fossen, G. J. , Simoneau, R. J. , and Ching, C. Y. , 1995, “ Influence of Turbulence Parameters, Reynolds Number, and Body Shape on Stagnation Region Heat Transfer,” ASME J. Heat Transfer, 117(3), pp. 597–603. [CrossRef]
Dullenkopf, K. , and Mayle, R. E. , 1995, “ An Account of Free-Stream Turbulence Length Scale on Laminar Heat Transfer,” ASME J. Turbomach., 117(3), pp. 401–406. [CrossRef]
Sanitjai, S. , and Goldstein, R. J. , 2001, “ Effect of Free Stream Turbulence on Local Mass Transfer From a Circular Cylinder,” Int. J. Heat Mass Transfer, 44(15), pp. 2863–2875. [CrossRef]
Oo, A. N. , and Ching, C. Y. , 2002, “ Stagnation Line Heat Transfer Augmentation Due to Freestream Vortical Structures and Vorticity,” ASME J. Heat Transfer, 124(3), pp. 583–587. [CrossRef]
Nix, A. C. , Diller, T. E. , and Ng, W. F. , 2007, “ Experimental Measurements and Modeling of the Effects of Large-Scale Freestream Turbulence on Heat Transfer,” ASME J. Turbomach., 129(3), pp. 542–550. [CrossRef]
Nix, A. C. , and Diller, T. E. , 2009, “ Experiments on the Physical Mechanism of Heat Transfer Augmentation by Freestream Turbulence at a Cylinder Stagnation Point,” ASME J. Turbomach., 131(2), p. 021015.
Gifford, A. R. , Diller, T. E. , and Vlachos, P. P. , 2011, “ The Physical Mechanism of Heat Transfer Augmentation in Stagnation Flow Subject to Freestream Turbulence,” ASME J. Heat Transfer, 133(2), p. 021901. [CrossRef]
Bae, S. , Lele, S. K. , and Sung, H. G. , 2002, “ The Influence of Inflow Disturbances on Stagnation Region Heat Transfer,” ASME J. Heat Transfer, 122, pp. 258–265. [CrossRef]
Wissink, J. G. , and Rodi, W. , 2011, “ Direct Numerical Simulation of Heat Transfer From the Stagnation Region of a Heated Cylinder Affected by an Impinging Wake,” J. Fluid Mech., 669, pp. 64–89. [CrossRef]
Chowdhury, N. H. K. , and Ames, F. E. , 2013, “ The Response of High Intensity Turbulence in the Presence of Large Stagnation Regions,” ASME Paper No. GT2013-95055.
Blair, M. F. , and Werle, M. J. , 1980, “ The Influence of Free-Stream Turbulence on the Zero-Pressure Gradient Fully Turbulent Boundary Layer,” United Technologies Research Center, East Hartford, CT, UTRC Report No. R80-914388-12.
Ansys, 2006, “ FLUENT 6.3 User's Guide,” Ansys Inc., Lebanon, NH.
Spalart, P. , and Allmaras, S. , 1992, “ A One-Equation Turbulence Model for Aerodynamic Flows,” AIAA Paper No. 92-0439.
Zukauskas, A. , and Ziugzda, J. , 1985, Heat Transfer of a Cylinder in Crossflow, Hemisphere, New York.
Kays, W. M. , Crawford, M. E. , and Weigand, B. , 2005, Convective Heat and Mass Transfer, 4th ed., McGraw-Hill, New York.
Frossling, N. , 1958, “ Evaporation, Heat Transfer, and Velocity Distribution in Two-Dimensional and Rotationally Symmetrical Laminar Boundary-Layer Flow,” National Advisory Committee for Aeronautics, Washington, DC, NACA Report No. NACA-TM-1432.
Moffat, R. J. , 1988, “ Describing the Uncertainties in Experimental Results,” Exp. Therm. Fluid Sci., 1(1), pp. 3–17. [CrossRef]


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Fig. 1

Wind tunnel facility used for stagnation heat transfer experiments

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Fig. 2

Photo of large cylindrical leading edge heat transfer surface installed in UND's wind tunnel facility

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Fig. 3

Schematic of original aero-combustor turbulence generator cross section showing back panel slots for wall jets and side panel plunged holes for primary and dilution holes

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Fig. 4

Comparison of the initial and the redesigned very high turbulence aero-combustor simulators

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Fig. 5

Cross-span velocity distributions at various distances downstream from new very high turbulence generator

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Fig. 6

One-dimensional power spectra of u’ showing two streamwise and three spanwise locations for 10 m/s

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Fig. 7

Half profiles of smaller and larger cylindrical leading edge test surfaces with top wall

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Fig. 8

Surface velocity distribution for smaller and larger leading edge test surfaces downstream from stagnation line

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Fig. 9

Acceleration distributions for smaller and larger cylindrical leading edge test surfaces from stagnation line

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Fig. 10

Expanded stagnation heat transfer results with very high turbulence generator (AH)

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Fig. 11

Correlation of absolute augmentation level with dissipation as a function of Reynolds number over diameter

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Fig. 12

Effects of turbulence on smaller leading edge test surface heat transfer, ReD = 31,250

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Fig. 13

Effects of turbulence on smaller leading edge test surface heat transfer, ReD = 62,500

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Fig. 14

Effects of turbulence on smaller leading edge test surface heat transfer, ReD = 125,000

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Fig. 15

Effects of turbulence on larger leading edge test surface heat transfer, ReD = 125,000

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Fig. 16

Effects of turbulence on larger leading edge test surface heat transfer, ReD = 250,000

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Fig. 17

Effects of turbulence on larger leading edge test surface heat transfer, ReD = 500,000



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