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TECHNICAL PAPERS

Full-Coverage Film Cooling With Short Normal Injection Holes

[+] Author and Article Information
Mark K. Harrington, Marcus A. McWaters, David G. Bogard

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

Christopher A. Lemmon

Mechanical Engineering Department, University of Wisconsin-Madison, Madison, WI 53706e-mail: calemmon@bme.jhu.edu

Karen A. Thole

Mechanical Engineering Department, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061e-mail: thole@vt.edu

J. Turbomach 123(4), 798-805 (Feb 01, 2001) (8 pages) doi:10.1115/1.1400111 History: Received February 01, 2001
Copyright © 2001 by ASME
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References

Cho,  H. H., and Goldstein,  R. J., 1995,“Heat (Mass) Transfer and Film Cooling Effectiveness With Injection Through Discrete Holes: Part II—On the Exposed Surface,” ASME J. Turbomach., 117, pp. 451–460.
Metzger,  D. E., Takeuchi,  D. I., and Kuenstler,  P. A., 1973,“Effectiveness and Heat Transfer With Full-Coverage Film Cooling,” ASME J. Eng. Power, 95, pp. 180–184.
Mayle,  R. E., and Camarata,  F. J., 1975,“Multihole Cooling Film Effectiveness and Heat Transfer,” ASME J. Heat Transfer, 97, pp. 534–538.
Metzger, D. E., Kuenstler, P. A., and Takeuchi, D. I., 1976, “Heat Transfer With Film Cooling Within and Downstream of One to Four Rows of Normal Injection Holes,” ASME Paper No. 76-GT-83.
Sasaki,  M., Takahara,  K., Kumagai,  T., and Hamano,  M., 1979,“Film Cooling Effectiveness for Injection From Multirow Holes,” ASME J. Eng. Gas Turbines Power, 101, pp. 101–108.
Sellers,  J. P., 1963,“Gaseous Film Cooling With Multiple Injection Stations,” AIAA J., 1, pp. 2154–2156.
Hale,  C. A., Plesniak,  M. W., and Ramadhyani,  S., 2000, “Film Cooling for Short Film Cooling Holes Fed by a Narrow Plenum,” ASME J. Turbomach., 122, pp. 553–557.
Harrington, M. K., 2000, “Adiabatic Effectiveness for Full Coverage Film Cooling With Normal Holes on a Flat Plate,” M. S. Thesis, University of Texas at Austin.
Thole,  K. A., Bogard,  D. G., and Whan-Tong,  J. L., 1994,“Generating High Freestream Turbulence Levels,” Exp. Fluids, 17, pp. 375–380.
Johnston, C. A., Bogard, D. G., and McWaters, M. A., 1999, “Highly Turbulent Mainstream Effects on Film Cooling of a Simulated Airfoil Leading Edge,” ASME Paper No. 99-GT-261.
Lemmon, C., 2000, “Simulation of Film Cooling for Gas Turbine Applications,” M. S. Thesis, University of Wisconsin—Madison.
Moffat,  R. J., 1988, “Describing the Uncertainties in Experimental Results,” Exp. Therm. Fluid Sci., 1, pp. 3–17.

Figures

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Test facility including turbulence generator and coolant flow loop
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Schematic of jets-in-crossflow turbulence generator
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Schematic of test plate with D=6 mm holes
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Single row laterally averaged adiabatic effectiveness; experimental measurements and CFD predictions
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Single row adiabatic effectiveness contours; experimental measurements and CFD predictions
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Thermal profiles along the centerline of the coolant jet for M=0.25 and 0.65
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CFD prediction of velocity field for M=0.65 coolant jet injection
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Full coverage adiabatic effectiveness with low mainstream turbulence, Tu=0.005
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Effect of blowing ratio on full coverage performance for the fully developed region (rows 8 and 9) with low mainstream turbulence, Tu=0.005
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Comparison of full coverage adiabatic effectiveness with low and high mainstream turbulence, Tu=0.005 and 0.18
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Effect of high mainstream turbulence on full coverage adiabatic effectiveness distribution for M=0.25
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Effect of high mainstream turbulence on full coverage adiabatic effectiveness distribution for M=0.65
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Superposition predictions using experimental and CFD single row baselines. Low mainstream turbulence, Tu=0.005

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