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TECHNICAL PAPERS

Effect of Internal Coolant Crossflow on the Effectiveness of Shaped Film-Cooling Holes

[+] Author and Article Information
Michael Gritsch, Achmed Schulz, Sigmar Wittig

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

J. Turbomach 125(3), 547-554 (Aug 27, 2003) (8 pages) doi:10.1115/1.1580523 History: Received August 01, 1999; Revised March 04, 2003; Online August 27, 2003
Copyright © 2003 by ASME
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References

Figures

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Film-cooling test section
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(a) Cylindrical, (b) fan-shaped, and (c) laid-back fan-shaped film-cooling hole geometries
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Effect of internal coolant crossflow Mach number Mac on the local film-cooling effectiveness distribution for the cylindrical hole
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Effect of internal coolant crossflow Mach number Mac on the local film-cooling effectiveness distribution for the fan-shaped hole
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Effect of internal coolant crossflow Mach number Mac on local film-cooling effectiveness distribution for the laid-back fan-shaped hole
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Position of the local effectiveness maximum at x/D=3
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Laterally averaged effectiveness for the cylindrical hole
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Laterally averaged effectiveness for the fan-shaped hole
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Laterally averaged effectiveness for the laid-back hole
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Effect of the blowing ratio on the spatially averaged film-cooling effectiveness

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