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TECHNICAL PAPERS

Unsteady Rotor Heat Transfer in a Transonic Turbine Stage

[+] Author and Article Information
F. Didier, R. Dénos, T. Arts

Von Karman Institute for Fluid Dynamics, Rhode Saint Genèse, Belgium

J. Turbomach 124(4), 614-622 (Nov 07, 2002) (9 pages) doi:10.1115/1.1505850 History: Received September 21, 2001; Online November 07, 2002
Copyright © 2002 by ASME
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References

Figures

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Gage distribution and geometry of the Brite rotor
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Thin film gages on Macor insert at hub platform, 85% span and blade tip
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Typical temperature evolution in the test section and heat flux on the rotor blade
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Phase reference and shock-wake system
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Time-average Nusselt number at the three investigated heights for nominal conditions
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Prediction of Nusselt number at leading edge according to Lowery and Vachon experimental law for cylinders in cross-flows
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Mach number distribution at 15, 50, and 85% height for nominal conditions
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Nusselt number distribution at 50% for the different running conditions
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Mach number distribution at midspan for the different running conditions
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Nusselt number distribution at blade tip for the different running conditions
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Nusselt number distribution at hub platform middle line for the different running conditions
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Statistics for unsteady Nusselt number at 50% span for nominal conditions.
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Unsteady traces at 50% span for nominal conditions
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Minimum and maximum of Nusselt number fluctuations at 15, 50, and 85% span for nominal conditions
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Comparison of Nusselt number with static pressure fluctuations
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Minimum and maximum of Nusselt number fluctuations at 15% span for the different conditions
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Minimum and maximum of Nusselt number fluctuations at 50% span for the different conditions

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