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TECHNICAL PAPERS

Assessment of Various Film-Cooling Configurations Including Shaped and Compound Angle Holes Based on Large-Scale Experiments

[+] Author and Article Information
J. Dittmar, A. Schulz, S. Wittig

Institut für Thermische Strömungsmaschinen, Universität Karlsruhe (TH), 76128 Karlsruhe, Germany

J. Turbomach 125(1), 57-64 (Jan 23, 2003) (8 pages) doi:10.1115/1.1515337 History: Received November 21, 2001; Online January 23, 2003
Copyright © 2003 by ASME
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References

Jabbari,  M. Y., and Goldstein,  R. J., 1978, “Adiabatic Wall Temperature and Heat Transfer Downstream of Injection Through Two Rows of Holes,” ASME J. Eng. Power, 100, Apr., pp. 303–307.
Jubran,  B., and Brown,  A., 1985, “Film Cooling From Two Rows of Holes Inclined in the Streamwise and Spanwise Directions,” ASME J. Eng. Gas Turbines Power, 107, Jan., pp. 84–91.
Jubran,  B. A., and Maiteh,  B. Y., 1999, “Film Cooling and Heat Transfer From a Combination of Two Rows of Simple and/or Compound Angle Holes in Inline and/or Staggered Configurations,” Heat Mass Transf., 34, pp. 495–502.
Ligrani,  P. M., Wigle,  J. M., Ciriello,  S., and Jackson,  S. M., 1994, “Film-Cooling From Holes With Compound Angle Orientations: Part1–Results Downstream of Two Staggered Rows of Holes With 3D Spanwise Spacing,” J. Heat Mass Transf., 116, May, pp. 341–352.
Goldstein,  R. J., Eckert,  E. R. G., and Burggraf,  F., 1974, “Effects of Hole Geometry and Density on Three-Dimensional Film Cooling,” Int. J. Heat Mass Transf., 17, pp. 595–607.
Gritsch, M., Schulz, A., and Wittig, S., 1997, “Adiabatic Wall Effectiveness Measurements of Film Cooling Holes with Expanded Exits,” ASME Paper 97-GT-164.
Gritsch, M., Schulz, A., and Wittig, S., 1998, “Heat Transfer Coefficient Measurements of Film Cooling Holes With Expanded Exits,” ASME Paper 98-GT-28.
Makki, Y., and Jakubowski, 1986, “An Experimental Study of Film Cooling From Diffused Trapezoidal Shaped Holes,” AIAA Pap. .
Yu, Y., Yen, C-H., Shih, T. I-P., Chyu, M. K., and Gogineni, S., 1999, “Film Cooling Effectiveness and Heat Transfer Coefficient Distribution Around Diffusion Shaped Holes,” ASME Paper 99-GT-34.
Reiss, H., and Bölcs, A., 1999, “Experimental Study of Showerhead Cooling on a Cylinder Comparing Several Configurations Using Cylindrical and Shaped Holes,” ASME Paper 99-GT-123.
Thole, K., Gritsch, M., Schulz, A., and Wittig, S., 1996, “Flow Field Measurements for Film Cooling Holes With Expanded Exits,” ASME Paper 96-GT-174.
Dittmar,  J., Jung,  I. S., Schulz,  A., Wittig,  S., and Lee,  J. S., 2000, “Film Cooling From Rows of Holes—Effect of Cooling Hole Shape and Row Arrangement on Adjabatic Effectiveness,” Ann. N.Y. Acad. Sci., 934, pp. 321–328.
Goldstein,  R. G., 1971, “Film Cooling,” Adv. Heat Transfer, 7, pp. 312–379.
Choe, H., Kays, W. M., and Moffat, R. J., 1974, “The Superposition Approach to Film Cooling,”ASME Paper 74-Wa/GT-27.
Metzger,  D. E., Carper,  H. J., and Swank,  L. R., 1968, “Heat Transfer With Film Cooling Near Non-Tangential Injection Slots,” ASME J. Eng. Power, 90, pp. 157–163.
Gritsch, M., Baldauf, S., Martiny, M., Schulz, A., and Wittig, S., 1999, “The Superposition Approach to Local Heat Transfer Coefficients in High Density Ratio Film Cooling Flows,” ASME Paper 99-GT-168.
Sen,  B., Schmidt,  D. L., and Bogard,  D. G., 1996, “Film Cooling With Compound Angle Holes: Heat Transfer,” ASME J. Turbomach., 118, pp. 800–806.

Figures

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Experimental setup and large-scale film-cooling model
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Distributions of Reynolds number and acceleration parameter k
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Photo of assembled suction side film-cooling test section
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Investigated film-cooling injection configurations
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Using the linear superposition principle for the determination of η and hf
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Local adiabatic effectiveness η at low blowing rate
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Local adiabatic effectiveness η at high blowing rate
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Lateral averaged adiabatic effectiveness for small (a), medium (b), and high (c) blowing rate
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Nondimensional local heat transfer coefficient hf/h0 at a blowing rate of M=0.5 and 1.0 respectively
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Nondimensional local heat transfer coefficient hf/h0 at a blowing rate of M=1.5 and 3.0, respectively
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Nondimensional lateral averaged heat transfer coefficient hf/h0 for small (a), medium (b), and high (c) blowing rate
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Lateral averaged net heat flux reduction parameter NHFR for small (a), medium (b), and high (c) blowing rate

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