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TECHNICAL PAPERS: Forced Convection

Film Cooling From Shaped Holes

[+] Author and Article Information
C. M. Bell, H. Hamakawa, P. M. Ligrani

Convective Heat Transfer Laboratory, Department of Mechanical Engineering, University of Utah, Salt Lake City, UT 84112

J. Heat Transfer 122(2), 224-232 (Dec 02, 1999) (9 pages) doi:10.1115/1.521484 History: Received January 21, 1999; Revised December 02, 1999
Copyright © 2000 by ASME
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References

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.
Makki, Y. H., and Jakubowski, G. S., 1986, “An Experimental Study of Film Cooling From Diffused Trapezoid Shaped Holes,” 24th Aerospace Sciences Meeting & Exhibit, Reno, NV, AIAA Paper No. 86-1326.
Ajersch, P., Zhou, J.-M., Ketler, S., Salcudean, M., and Gartshore, I. S., 1995, “Multiple Jets in a Crossflow: Detailed Measurements and Numerical Simulations,” International Gas Turbine and Aeroengine Congress & Exhibition, Houston, TX, ASME Paper No. 95-GT-9.
Farmer, J. P., Seager, D. J., and Liburdy, J. A., 1997, “The Effect of Shaping Inclined Slots on Film Cooling Effectiveness and Heat Transfer Coefficient,” International Gas Turbine and Aeroengine Congress & Exhibition, Orlando, FL, ASME Paper No. 97-GT-339.
Schmidt,  D. L., Sen,  B., and Bogard,  D. G., 1996, “Film Cooling With Compound Angle Holes: Adiabatic Effectiveness,” ASME J. Turbomach., 118, pp. 807–813.
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.
Haven, B., and Kurosaka, M., 1996, “The Effect of Hole Geometry on Lift-Off Behavior of Coolant Jets,” 34th Aerospace Sciences Meeting & Exhibit, Reno, NV, AIAA Paper No. 96-0618.
Giebert, D., Gritsch, M., Schulz, A., and Wittig, S., 1997, “Film-Cooling From Holes With Expanded Exits: A Comparison of Computational Results With Experiments,” International Gas Turbine and Aeroengine Congress & Exhibition, Orlando, FL, ASME Paper No 97-GT-163.
Thole,  K., Gritsch,  M., Schulz,  A., and Wittig,  S., 1998, “Flowfield Measurements for Film-Cooling Holes With Expanded Exits,” ASME J. Turbomach., 120, pp. 327–336.
Gritsch,  M., Schulz,  A., and Wittig,  S., 1998, “Adiabatic Wall Effectiveness Measurements of Film-Cooling Holes with Expanded Exits,” ASME J. Turbomach., 120, pp. 549–556.
Gritsch, M., Schulz, A., and Wittig, S., 2000, “Heat Transfer Coefficient Measurements of Film-Cooling Holes with Expanded Exits,” ASME J. Turbomach., 122 , to appear.
Chen, P.-H., Ai, D., and Lee, S.-H., 1998, “Effects of Compound Angle Injection on Flat-Plate Film Cooling Through a Row of Conical Holes,” International Gas Turbine and Aeroengine Congress & Exhibition, Stockholm, ASME Paper No. 98-GT-459.
Berger, P. A., and Liburdy, J. A., 1998, “A Near-Field Investigation Into the Effects of Geometry and Compound Angle on the Flowfield of a Row of Film Cooling Holes,” International Gas Turbine and Aeroengine Congress & Exhibition, Stockholm, ASME Paper No. 98-GT-279.
Hyams, D. G., and Leylek, J. H., 1997, “A Detailed Analysis of Film Cooling Physics, Part III: Streamwise Injection with Shaped Holes,” International Gas Turbine and Aeroengine Congress & Exhibition, Orlando, FL, ASME Paper No. 97-GT-271.
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Bell, C. M., 1998, “Effects of Bulk Flow Pulsations on Film Cooling With Different Density Ratios,” Master of Science thesis, University of Utah, Salt Lake City, UT.
Kays, W. M., and Crawford, M. E., 1993, Convective Heat and Mass Transfer, 3rd Ed, McGraw-Hill, New York.
Kline, S. J., and McClintock, F. A., 1953, “Describing Uncertainties in Single Sample Experiments,” Mech. Eng. (Am. Soc. Mech. Eng.), pp. 3–8.
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Ligrani,  P. M., Wigle,  J. M., Ciriello,  S., and Jackson,  S. M., 1994, “Film Cooling From Holes With Compound Angle Orientations: Part 1-Results Downstream of Two Staggered Rows of Holes with 3d Spanwise Spacing,” ASME J. Heat Transfer, 116, pp. 341–352.
Pedersen,  D. R., Eckert,  E. R. G., and Goldstein,  R. J., 1977, “Film Cooling With Large Density Differences Between the Mainstream and the Secondary Fluid Measured by the Heat-Mass Transfer Analogy,” ASME J. Heat Transfer, 99, pp. 620–627.
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Ligrani,  P. M., Wigle,  J. M., and Jackson,  S. M., 1994, “Film Cooling From Holes With Compound Angle Orientations: Part 2—Results Downstream of a Single Row of Holes With 6d Spanwise Spacing,” ASME J. Heat Transfer, 116, pp. 353–362.
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Figures

Grahic Jump Location
Coordinate system and experimental apparatus
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Film hole configurations
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Spanwise-averaged adiabatic film cooling effectiveness for different blowing ratios and different film hole configurations for ρc=0.93
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Spanwise-averaged adiabatic film cooling effectiveness as dependent upon blowing ratio and momentum flux ratio for x/d=8.42 and ρc=0.93
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Spanwise-averaged adiabatic film cooling effectiveness for m=0.7 for different film hole configurations and different density ratios, including comparisons with results from [S]: (5)
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Comparisons of spanwise-averaged adiabatic film cooling effectiveness distributions for CYSA holes with results from [P]: (23)
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Spanwise-averaged iso-energetic Stanton number ratios for different blowing ratios and different hole configurations for ρc=1.0
Grahic Jump Location
Comparisons of spanwise-averaged iso-energetic Stanton number ratio distributions for CYSA holes with results from [E]: (26)
Grahic Jump Location
Spanwise-averaged overall film cooling performance parameters for different blowing ratios and different hole configurations for ρc=0.93−1.0
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Spatially-averaged magnitudes of net heat flux reduction (NHFR) at different momentum flux ratios, including comparisons with results from [Se]: (6)

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