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TECHNICAL PAPERS

Effect of Internal Coolant Crossflow Orientation on the Discharge Coefficient of Shaped Film-Cooling Holes

[+] Author and Article Information
M. Gritsch, C. Saumweber, A. Schulz, S. Wittig, E. Sharp

Lehrstuhl und Institut für Thermische Strömungsmaschinen, Universität Karlsruhe (T.H.), Kaiserstr. 12, 76128 Karlsruhe, Germany

J. Turbomach 122(1), 146-152 (Feb 01, 1999) (7 pages) doi:10.1115/1.555436 History: Received February 01, 1999
Copyright © 2000 by ASME
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References

Hay,  N., and Lampard,  D., 1998, “Discharge Coefficient of Turbine Cooling Holes: A Review,” ASME J. Turbomach., 120, pp. 314–319.
Hay,  N., Lampard,  D., and Benmansour,  S., 1983, “Effect of Crossflows on the Discharge Coefficient of Film Cooling Holes,” ASME J. Eng. Power, 105, pp. 243–248.
Hay,  N., Henshall,  S. E., and Manning,  A., 1994, “Discharge Coefficients of Holes Angled to the Flow Direction,” ASME J. Turbomach., 116, pp. 92–96.
Burd,  S. W., and Simon,  T. W., 1999, “Measurements of Discharge Coefficients in Film-Cooling,” ASME J. Turbomach., 121, pp. 243–248.
Hay,  N., and Spencer,  A., 1992, “Discharge Coefficients of Cooling Holes With Radiused and Chamfered Inlets,” ASME J. Turbomach., 114, pp. 701–706.
Hay. N., Lampard, D., and Khaldi, A., 1994, “The Coefficient of Discharge of 30° Inclined Film Cooling Holes With Rounded Entries or Exits,” ASME Paper No. 94-GT-180.
Gritsch,  M., Schulz,  A., and Wittig,  S., 1998, “Adiabatic Wall Effectiveness Measurements of Film-Cooling Holes With Expanded Exits,” ASME J. Turbomach., 120, pp. 568–574.
Gritsch, M., Schulz, A., and Wittig, S., 1998, “Heat Transfer Coefficient Measurements of Film-Cooling Holes With Expanded Exits,” ASME Paper No. 98-GT-28.
Thole,  K. A., Gritsch,  M., Schulz,  A., and Wittig,  S., 1998, “Flowfield Measurements for Film-Cooling Holes With Expanded Exits,” ASME J. Turbomach., 120, pp. 327–336.
Hay, N., and Lampard, D., 1995, “The Discharge Coefficient of Flared Film Cooling Holes,” ASME Paper No. 95-GT-15.
Gritsch,  M., Schulz,  A., and Wittig,  S., 1998, “Discharge Coefficient Measurements of Film-Cooling Holes With Expanded Exits,” ASME J. Turbomach., 120, pp. 560–567.
Rowbury, D. A., Oldfield, M. L. G., and Lock, G. D., 1997, “Engine Representative Discharge Coefficients Measured in an Annular Nozzle Guide Vane Cascade,” ASME Paper No. 97-GT-99.
Gritsch,  M., Schulz,  A., and Wittig,  S., 1998, “Method of Correlating Discharge Coefficients of Film-Cooling Holes,” AIAA J., 36, pp. 976–980.
Wittig, S., Schulz, A., Gritsch, M., and Thole, K. A., 1996, “Transonic Film-Cooling Investigations: Effects of Hole Shapes and Orientations,” ASME Paper No. 96-GT-222.
Kline,  S., and McClintook,  F., 1953, “Describing Uncertainties in Single-Sample Experiments,” Mech. Eng., 75, pp. 3–8.
Lichtarowicz,  A., Duggins,  R. K., and Markland,  E., 1965, “Discharge Coefficients for Incompressible Non-cavitating Flow Through Long Orifices,” J. Mech. Eng. Sci., 7, pp. 210–219.
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Hyams,  D. G., and Leylek,  J. H., 2000, “A Detailed Analysis of Film Cooling Physics: Part III—Streamwise Injection With Shaped Holes,” ASME J. Turbomach., 122, pp. 122–132.
Thole,  K. A., Gritsch,  M., Schulz,  A., and Wittig,  S., 1997, “Effect of a Crossflow at the Entrance to a Film-Cooling Hole,” ASME J. Fluids Eng., 119, pp. 533–541.
Kohli, A., and Thole, K. A., 1997, “A CFD Investigation on the Effect of Entrance Flow Conditions in Discrete Film-Cooling Holes,” Proc. 32nd ASME National Heat Transfer Conference, Vol. 12, pp. 223–232.
Kohli, A., and Thole, K. A., 1998, “Entrance Effects on Diffused Film-Cooling Holes,” ASME Paper No. 98-GT-402.
Sasaki,  M., Takahara,  K., Sakata,  K., and Kumagai,  T., 1976, “Study on Film Cooling of Turbine Blades,” Bull. JSME, 19, pp. 1344–1352.
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Figures

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Cylindrical hole, discharge coefficient CD versus pressure ratio ptc/pm
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Fan-shaped hole, discharge coefficient CD versus pressure ratio ptc/pm
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Film-cooling test section
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Laid-back fan-shaped hole, discharge coefficient CD versus pressure ratio ptc/pm
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Discharge coefficient CD versus pressure ratio ptc/pm, effect of hole shape
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Cylindrical hole, discharge coefficient CD versus internal crossflow Mach number Mac
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Fan-shaped hole, discharge coefficient CD versus internal crossflow Mach number Mac
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Laid-back fan-shaped hole, discharge coefficient CD versus internal crossflow Mach number Mac
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Cylindrical hole, discharge coefficient CD versus pressure ratio ptc/pm, effect of coolant crossflow orientation
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Laid-back fan-shaped hole, discharge coefficient CD versus pressure ratio ptc/pm, effect of coolant crossflow orientation
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Cylindrical hole, normalized discharge coefficient versus jet-to-internal crossflow momentum flux ratio
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Fan-shaped hole, normalized discharge coefficient versus jet-to-internal crossflow momentum flux ratio
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Laid-back fan-shaped hole, normalized discharge coefficient versus jet-to-internal crossflow momentum flux ratio
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Cylindrical hole, comparison of measured and predicted discharge coefficients
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Fan-shaped hole, comparison of measured and predicted discharge coefficients
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Laid-back fan-shaped hole, comparison of measured and predicted discharge coefficients

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