This paper presents both measurements and predictions of the hot-gas-side heat transfer to a modern, 1 stage high-pressure, transonic turbine. Comparisons of the predicted and measured heat transfer are presented for each airfoil at three locations, as well as on the various endwalls and rotor tip. The measurements were performed using the Ohio State University Gas Turbine Laboratory Test Facility (TTF). The research program utilized an uncooled turbine stage at a range of operating conditions representative of the engine: in terms of corrected speed, flow function, stage pressure ratio, and gas-to-metal temperature ratio. All three airfoils were heavily instrumented for both pressure and heat transfer measurements at multiple locations. A 3D, compressible, Reynolds-averaged Navier–Stokes computational fluid dynamics (CFD) solver with turbulence modeling was used for the CFD predictions. The entire 1 stage turbine was solved using a single computation, at two different Reynolds numbers. The CFD solutions were steady, with tangentially mass-averaged inlet/exit boundary condition profiles exchanged between adjacent airfoil-rows. Overall, the CFD heat transfer predictions compared very favorably with both the global operation of the turbine and with the local measurements of heat transfer. A discussion of the features of the turbine heat transfer distributions, and their association with the corresponding flow-physics, has been included.
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April 2009
Research Papers
Heat Transfer Measurements and Predictions for a Modern, High-Pressure, Transonic Turbine, Including Endwalls
James A. Tallman,
James A. Tallman
General Electric Global Research Center
, Niskayuna, NY 12309
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Charles W. Haldeman,
Charles W. Haldeman
Gas Turbine Laboratory,
The Ohio State University
, Columbus, OH 43220
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Michael G. Dunn,
Michael G. Dunn
Gas Turbine Laboratory,
The Ohio State University
, Columbus, OH 43220
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Anil K. Tolpadi,
Anil K. Tolpadi
General Electric Global Research Center
, Niskayuna, NY 12309
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Robert F. Bergholz
Robert F. Bergholz
General Electric Transportation
, Cincinnati, OH 45215
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James A. Tallman
General Electric Global Research Center
, Niskayuna, NY 12309
Charles W. Haldeman
Gas Turbine Laboratory,
The Ohio State University
, Columbus, OH 43220
Michael G. Dunn
Gas Turbine Laboratory,
The Ohio State University
, Columbus, OH 43220
Anil K. Tolpadi
General Electric Global Research Center
, Niskayuna, NY 12309
Robert F. Bergholz
General Electric Transportation
, Cincinnati, OH 45215J. Turbomach. Apr 2009, 131(2): 021001 (14 pages)
Published Online: January 22, 2009
Article history
Received:
July 14, 2006
Revised:
August 18, 2008
Published:
January 22, 2009
Citation
Tallman, J. A., Haldeman, C. W., Dunn, M. G., Tolpadi, A. K., and Bergholz, R. F. (January 22, 2009). "Heat Transfer Measurements and Predictions for a Modern, High-Pressure, Transonic Turbine, Including Endwalls." ASME. J. Turbomach. April 2009; 131(2): 021001. https://doi.org/10.1115/1.2985072
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