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TECHNICAL PAPERS

Influence of Internal Flow on Film Cooling Effectiveness

[+] Author and Article Information
Günter Wilfert

ABB Corporate Research Ltd., CH-5405 Baden-Dättwil, Switzerland

Stefan Wolff

Institut für Strahlantriebe, Universität der Bundeswehr München, D-85577 Neubiberg, Germany

J. Turbomach 122(2), 327-333 (Feb 01, 1999) (7 pages) doi:10.1115/1.555449 History: Received February 01, 1999
Copyright © 2000 by ASME
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References

Figures

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Cross section of a combined cooled turbine blade
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Internal geometry for improved vane cooling
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Straight channel test facility
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Injection configurations
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Injection configurations (P/D=4): (a) L/D=4; (b) L/D=8
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Typical TLC contours of film cooling effectiveness values at a low blowing rate
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Typical interpolated film cooling effectiveness data at a low blowing rate
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Lateral averaged film cooling effectiveness for configuration 1 (M=1.0) and Lutum (M=1.15)
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Adiabatic film cooling effectiveness distribution for M=1, configuration 1 (L/D=8)
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Adiabatic film cooling effectiveness distribution for M=1, configuration 4 (L/D=8, with ribs)
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Influence of blowing rate on lateral averaged adiabatic film cooling effectiveness for configuration 1 (L/D=8)
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Influence of blowing rate on lateral averaged adiabatic film cooling effectiveness for configuration 4 (L/D=8, with ribs)
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Influence of guiding ribs on improvement of lateral averaged adiabatic film cooling effectiveness (M=1,L/D=8)
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Improvement of lateral averaged adiabatic film cooling effectiveness (M=1,L/D=8, with ribs) configurations (M=1,L/D=8)
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Improvement of lateral averaged adiabatic film cooling effectiveness (M=1,L/D=4, with ribs)
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Influence of guiding ribs on improvement of lateral averaged adiabatic film cooling effectiveness (M=1,L/D=4)
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Sketch and photo of vortex generator setup
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Adiabatic film cooling effectiveness distribution for M=1,L/D=4, configuration 3 with vortex generator
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Adiabatic film cooling effectiveness distribution for M=1,L/D=4, configuration 3 with ribs
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Improvement of lateral averaged film cooling effectiveness for configurations 3, 4, and 5 with vortex generator and configuration 3 with ribs (M=1,L/D=4)

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