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TECHNICAL PAPERS

Performance Degradation due to Blade Surface Roughness in a Single-Stage Axial Turbine

[+] Author and Article Information
Yong Il Yun

School of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-742, Korea   e-mail: yyoon1@snu.ac.kr

Il Young Park

Turbomachinery R&D Center, Samsung Techwin, Changwon 641-717, Korea   e-mail: ilyoung10.park@samsung.com

Seung Jin Song

School of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-742, Koreae-mail: sjsong@snu.ac.kr

J. Turbomach 127(1), 137-143 (Feb 09, 2005) (7 pages) doi:10.1115/1.1811097 History: Received October 01, 2003; Revised March 01, 2004; Online February 09, 2005
Copyright © 2005 by ASME
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References

Bons,  J. P., Taylor,  R. P., McClain,  S. T., and Rivir,  R. B., 2001, “The Many Faces of Turbine Surface Roughness,” ASME J. Turbomach., 123(4), pp. 739–748.
Taylor,  R. P., 1990, “Surface Roughness Measurements on Gas Turbine Blades,” ASME J. Turbomach., 112(2), pp. 175–180.
Bogard,  D. G., Schmidt,  D. L., and Tabbita,  M., 1998, “Characterization and Laboratory Simulation of Turbine Airfoil Surface Roughness and Associated Heat Transfer,” ASME J. Turbomach., 120(2), pp. 337–342.
Sigal,  A., and Danberg,  J. E., 1990, “New Correlation of Roughness Density Effect on the Turbulent Boundary Layer,” AIAA J., 28(3), pp. 554–556.
Bons,  J. P., 2002, “St and cf Augmentation for Real Turbine Roughness with Elevated Freestream Turbulence,” ASME J. Turbomach., 124(4), pp. 632–644.
Schlichting, H., 1979, Boundary Layer Theory, seventh Edition, McGraw-Hill, New York.
Bammert,  K., and Sandstede,  H., 1972, “Measurements Concerning the Influence of Surface Roughness and Profile Changes on the Performance of Gas Turbine,” ASME J. Eng. Power, 94(3), pp. 207–213.
Bammert,  K., and Sandstede,  H., 1980, “Measurements of the Boundary Layer Development Along a Turbine Blade With Rough Surfaces,” ASME J. Eng. Power, 102(4), pp. 978–983.
Kind,  R. J., Serjak,  P. J., and Abbott,  M. W. P., 1998, “Measurements and Prediction of the Effects of Surface Roughness on Profile Losses and Deviation in a Turbine Cascade,” ASME J. Turbomach., 120(1), pp. 20–27.
Boyle, R.J., and Senyitko, R.G., 2003, “Measurements and Predictions of Surface Roughness Effects on Turbine Vane Aerodynamics,” ASME Paper No. GT2003-38580.
Boynton,  J. L., Tabibzadeh,  R., and Hudson,  S. T., 1993, “Investigation of Rotor Blade Roughness Effects on Turbine Performance,” ASME J. Turbomach., 115(3), pp. 614–620.
Abuaf,  N., Bunker,  R. S., and Lee,  C. P., 1998, “Effects of Surface Roughness on Heat Transfer and Aerodynamic Performance of Turbine Airfoils,” ASME J. Turbomach., 120(3), pp. 522–529.
Nikuradse, J., 1933, “Laws for Flows in Rough Pipes,” VDI-Forschungsheft, 361 (B4).
Kline,  S. J., and McClintock,  F. A., 1953 “Describing Uncertainty in Single Sample Experiments,” Mech. Eng. (Am. Soc. Mech. Eng.), January pp. 3–8.

Figures

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Schematic of the test turbine rig
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Axial locations of instrumentation
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Blade roughening process
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Roughened test turbine blade set
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Normalized efficiency degradation with transitional and full roughnesses
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Suction side-pressure side differentiation with fully roughened stator (ks=400 μm)
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Stator-rotor differentiation with transitional roughness (ks=106 μm)
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Stator-rotor differentiation with full roughness (ks=400 μm)
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Measured stator pressure coefficient
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Stage velocity triangles
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Estimated stator loss coefficient
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Measured rotor pressure coefficient
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Estimated rotor loss coefficient

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