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RESEARCH PAPER

Turbulent Transport in Film Cooling Flows

[+] Author and Article Information
Atul Kohli

400 Main Street, M/S 165-16, Pratt & Whitney, East Hartford, CT 06108

David G. Bogard

Mechanical Engineering Department, University of Texas, Austin, TX 78712

J. Heat Transfer 127(5), 513-520 (May 25, 2005) (8 pages) doi:10.1115/1.1865221 History: Received March 24, 2004; Revised October 28, 2004; Online May 25, 2005
Copyright © 2005 by ASME
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References

Walters,  D. K., and Leylek,  J. H., 1997, “A Systematic Computational Methodology Applied to a Three-Dimensional Film-Cooling Flowfield,” ASME J. Turbomach., 119, pp. 777–785.
Andreopoulos,  J., and Rodi,  W., 1984, “Experimental Investigation of Jets in a Crossflow,” J. Fluid Mech., 138, pp. 93–127.
Pietrzyk, J. R., 1989, “Experimental Study of the Interaction of Dense Jets With a Crossflow for Gas Turbine Applications,” Ph.D. thesis, The University of Texas at Austin, Austin, TX.
Kaszeta,  R. W., and Simon,  T. W., 1999, “Measurement of Eddy Diffusivity of Momentum in Film Cooling Flows With Streamwise Injection,” ASME paper No. 99-GT-37.
Kohli,  A., and Bogard,  D. G., 1998, “Fluctuating Thermal Field in the Near Hole Region for Film Cooling Flows,” ASME J. Turbomach., 120, pp. 86–91.
Kohli,  A., and Bogard,  D. G., 1998, “Effects of Very High Freestream Turbulence on the Jet-Mainstream Interaction in a Film Cooling Flow,” ASME J. Turbomach., 120, pp. 785–790.
Kohli, A., 1996, “Experimental Investigation of the Jet-Mainstream Interaction in Film Cooling Flow With Different Freestream Condition,” Ph.D. thesis, The University of Texas at Austin, Austin, TX.
Thole,  K. A., Bogard,  D. G., and Whan-Tong,  J. L., 1994, “Generating High Freestream Turbulence Levels,” Exp. Fluids, 17, pp. 374–380.
Thole, K. A., Sinha, A. K., Bogard, D. G., and Crawford, M. E., 1992, “Mean Temperature Measurements of Jets With a Crossflow for Gas Turbine Film Cooling Application,” Rotating Machinery Transport Phenomena, J. H. Kim and W. J. Yang, eds., Hemisphere Publishing Corp., New York.
Chapra, S. C., and Canale, R. P., 1988, Numerical Methods for Engineers, 2nd ed., McGraw-Hill, New York.
Thole, K. A., 1992, “High Freestream Turbulence Effects on the Transport of Heat and Momentum,” Ph.D. thesis, The University of Texas at Austin, Austin, TX.
Thole,  K. A., and Bogard,  D. G., 1994, “Simultaneous Temperature and Velocity Measurements,” Meas. Sci. Technol., 5, pp. 435–439.
Chen,  C. P., and Blackwelder,  R. F., 1978, “Large-Scale Motion in a Turbulent Boundary Layer: A Study Using Temperature Contamination,” J. Fluid Mech., 89, Part 1, pp. 1–31.
Subramanian,  C. S., and Antonia,  R. A., 1981, “Effect of Reynolds Number on a Slightly Heated Turbulent Boundary Layer,” Int. J. Heat Mass Transfer, 24, No. 11, pp. 1833–1846.
Perry,  A. E., and Hoffman,  P. H., 1976, “An Experimental Study of Turbulent Convective Heat Transfer From a Flat Plate,” J. Fluid Mech., 77, Part 2, pp. 355–368.
Pope, S. B., 2000, Turbulent Flows, Cambridge University Press, Cambridge, UK.

Figures

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Schematic of test section and cooling hole geometry 5
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Ruu variation with distance between LDV and cold-wire
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Temperature-velocity correlation coefficients for the standard thermal boundary layer
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Mean temperature contours (Θ) on jet centerline 5
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Normalized mean streamwise velocity (U/U) contours on jet centerline
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Jet-mainstream interface defined using rms temperature contours (Θ′ ) on jet centerline from 5
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(a) uv* and (b) Ruv on centerline for low freestream turbulence
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Contours of εm* for low freestream turbulence
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(a) ut* and (b) Rut for low freestream turbulence
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(a) vt* and (b) Rvt for low freestream turbulence
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Contours of εTy* for low freestream turbulence
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(a) uv* and (b) Ruv for high freestream turbulence
Grahic Jump Location
Contours of εm* for high freestream turbulence
Grahic Jump Location
(a) ut* and (b) Rut for high freestream turbulence
Grahic Jump Location
(a) vt* and (b) Rvt for high freestream turbulence
Grahic Jump Location
Contours of εTy* for high freestream turbulence

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