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TECHNICAL PAPERS

Correlation of Film-Cooling Effectiveness From Thermographic Measurements at Enginelike Conditions

[+] Author and Article Information
S. Baldauf, M. Scheurlen

Siemens Power Generation, 45473 Mülheim an der Ruhr, Germany

A. Schulz, S. Wittig

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

J. Turbomach 124(4), 686-698 (Nov 07, 2002) (13 pages) doi:10.1115/1.1504443 History: Received November 29, 2001; Online November 07, 2002
Copyright © 2002 by ASME
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References

Baldauf,  S., Schulz,  A., and Wittig,  S., 1999, “High-Resolution Measurements of Local Effectiveness From Discrete Hole Film Cooling,” ASME J. Turbomach., 123, pp. 758–765.
Baldauf,  S., Schulz,  A., and Wittig,  S., 1999, “High Resolution Measurements of Local Heat Transfer Coefficients From Discrete Hole Film Cooling,” ASME J. Turbomach., 123, pp. 749–757.
Baldauf, S., and Scheurlen, M., 1996, “CFD Based Sensitivity Study of Flow Parameters for Engine Like Film Cooling Conditions,” ASME Paper 96-GT-310.
Martiny, M., Schiele, R., Gritsch, M., Schulz, A., and Wittig, S., 1996, “In Situ Calibration for Quantitative Infrared Thermography,” Quirt ’96 Eurotherm Seminar No. 50, Stuttgart, Germany, September 2–5.
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.
Kohli,  A., and Bogard,  D. G., 1997, “Adiabatic Effectiveness, Thermal Fields, and Velocity Fields for Film Cooling With Large Angle Ejection,” ASME J. Turbomach., 119, pp. 352–358.
Drost, U., Bolcs, A., and Hoffs, A., 1997, “Utilization of the Transient Liquid Crystal Technique for Film Cooling Effectiveness and Heat Transfer Investigations on a Flat Plate and a Turbine Airfoil,” ASME Paper 97-GT-26.
Foster,  N. W., and Lampard,  D., 1980, “The Flow and Film Cooling Effectiveness Following Injection Through a Row of Holes,” ASME J. Eng. Power, 102, pp. 584–588.
Goldstein,  R. J., 1971, “Film Cooling,” Adv. Heat Transfer, 7, Academic Press, pp. 321–379.
Sturgess, G. J., 1968, “Correlation of Data and Prediction of Effectiveness from Film Cooling Injection Geometries of Practical Nature,” Proc. Cranfield International Propulsion Symposium Series, Vol. 2, pp. 229–250.
Sturgess, G. J., 1968, “Film Cooling Optimization for Minimum Cooling Airflow in Aircraft Gas-Turbines,” Proc. Cranfield International Propulsion Symposium Series, Vol. 2, pp. 347–376.
Pai,  B. R., and Whitelaw,  J. H., 1971, “The Prediction of Wall Temperature in the Presence of Film Cooling,” Int. J. Heat Mass Transf., 14, pp. 409–426.
Mukherjee,  D. K., 1976, “Film Cooling With Injection Through Slots,” ASME J. Eng. Power, pp. 556–559.
Lefebvre, A. H., 1983, Gas Turbine Combustion, Hemisphere Publ., New York, NY.
Metzger,  D. E., and Fletcher,  D. D., 1971, “Evaluation of Heat Transfer for Film-Cooled Turbine Components,” J. Aircr., 8, pp. 33–38.
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, pp. 303–307.
Kruse, H., 1985, “Effects of Hole Geometry, Wall Curvature and Pressure Gradient on Film Cooling Downstream of a Single Row,” Heat Transfer and Cooling in Gas Turbines, AGARD Conf. Proc., AGARD CP-390, Paper 8.
Forth, C. J. P., and Jones, T. V., 1986, “Scaling Parameters in Film Cooling,” Proc. 8th International Heat Transfer Conference, Vol. 3, pp. 1271–1276.
L’Ecuyer, M. R., and Soechting, F. O., 1985, “A Model for Correlating Flat Plate Film Cooling Effectiveness for Rows of Round Holes,” Heat Transfer and Cooling in Gas Turbines AGARD Conf. Proc. AGARD-CP-390, Paper 19.
Baldauf, S., Scheurlen, M., Schulz, A., and Wittig, S., 1997, “An Overall Correlation of Film Cooling Effectiveness From One Row of Holes,” ASME Paper 97-GT-46.
Louis, J. F., 1977, “Systematic Studies of Heat Transfer Coefficient and Film Cooling Effectiveness,” Heat Transfer and Cooling in Gas Turbines AGARD Conf. Proc., AGARD-CP-299, Paper 28.
Abramovic, G. N., 1963 The Theory of Turbulent Jets, MIT Press, Cambridge, MA.
Bons, J. P., MacArthur, C. D., and Rivir, R. B., 1994, “The Effect of High Freestream Turbulence on Film Cooling Effectiveness,” ASME Paper 94-GT-51.
Schmidt, D. L., and Bogard, D. G., 1996, “Effects of Free-Stream Turbulence and Surface Roughness on Film Cooling,” ASME Paper 96-GT-462.
Baldauf,  S., Scheurlen,  M., Schulz,  A., and Wittig,  S., 2002, “Heat Flux Reduction From Film Cooling and Correlation of Heat Transfer Coefficients From Measurements at Enginelike Conditions,” 2002-GT-30181 ASME J. Turbomach., 124, pp. 699–709.

Figures

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Variation of the blowing rate at low and high density ratio
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Comparison with literature results
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Effect of the blowing angle
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Effect of the hole spacing
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Effect of the turbulence intensity
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Effectiveness plotted versus different downstream scales
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Laterally averaged effectiveness peaks of all measurements
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Normalized effectiveness peaks of all measurements
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Normalized effectiveness curves at different hole spacing
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Scaling of the peak effectiveness maximum
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Normalized and scaled effectiveness curves at low and elevated turbulence level
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Final laterally averaged effectiveness correlation
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Comparison measurement versus correlation

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