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TECHNICAL PAPERS

The Many Faces of Turbine Surface Roughness

[+] Author and Article Information
Jeffrey P. Bons

Air Force Institute of Technology, Wright-Patterson AFB, OH 45433

Robert P. Taylor, Stephen T. McClain

Mississippi State University, Mississippi State, MS 39762

Richard B. Rivir

Air Force Research Laboratory, Wright-Patterson AFB, OH 45433

J. Turbomach 123(4), 739-748 (Feb 01, 2001) (10 pages) doi:10.1115/1.1400115 History: Received February 01, 2001
Copyright © 2001 by ASME
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References

Acharya,  M., Bornstein,  J., and Escudier,  M., 1986, “Turbulent Boundary Layers on Rough Surfaces,” Exp. Fluids, 4, pp. 33–47.
Taylor,  R. P., 1990, “Surface Roughness Measurements on Gas Turbine Blades,” ASME J. Turbomach., 112, pp. 175–180.
Tarada, F., and Suzuki, M., 1993, “External Heat Transfer Enhancement to Turbine Blading Due to Surface Roughness,” ASME Paper No. 93-GT-74.
Bammert,  K., and Sandstede,  H., 1980, “Measurements of the Boundary Layer Development Along a Turbine Blade With Rough Surfaces,” ASME J. Eng. Power, 102, pp. 978–983.
Turner, A., Tarada, F., and Bayley, F., 1985, “Effects of Surface Roughness on Heat Transfer to Gas Turbine Blades,” AGARD-CP-390, pp 9–1 to 9–9.
Blair,  M. F., 1994, “An Experimental Study of Heat Transfer in a Large-Scale Turbine Rotor Passage,” ASME J. Turbomach., 116, pp. 1–13.
Hoffs, A., Drost, U., and Bolcs, A., 1996, “Heat Transfer Measurements on a Turbine Airfoil at Various Reynolds Numbers and Turbulence Intensities Including Effects of Surface Roughness,” ASME Paper No. 96-GT-169.
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, pp. 337–342.
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, pp. 522–529.
Boynton,  J. L., Tabibzadeh,  R., and Hudson,  S. T., 1993, “Investigation of Rotor Blade Roughness Effects on Turbine Performance,” ASME J. Turbomach., 115, pp. 614–620.
Nikuradse, J., 1933, “Laws for Flows in Rough Pipes,” VDI-Forchungsheft 361, Series B, Vol. 4 (English Trans NACA TM 1292, 1950).
Schlichting, H., 1936, “Experimentelle Untersuchungen zum Rauhigkeits-Problem,” Ingenieur-Archiv., VII, No. 1, pp. 1–34. (Also “Experimental Investigation of the Problem of Surface Roughness,” NACA TM 823).
Cebeci,  T., and Chang,  K., 1978, “Calculation of Incompressible Rough-Wall Boundary-Layer Flows,” AIAA J., 16, pp. 730–735.
Boyle,  R. J., 1994, “Prediction of Surface Roughness and Incidence Effects on Turbine Performance,” ASME J. Turbomach., 116, pp. 745–751.
Guo,  S. M., Jones,  T. V., Lock,  G. D., and Dancer,  S. N., 1998, “Computational Prediction of Heat Transfer to Gas Turbine Nozzle Guide Vanes With Roughened Surfaces,” ASME J. Turbomach., 120, pp. 343–350.
Finson, M. L., and Wu, P. K. S., 1979 “Analysis of Rough Wall Turbulent Heating with Applications to Blunted Flight Vehicles,” AIAA Paper No. 79-008.
Taylor,  R. P., Coleman,  H. W., and Hodge,  B. K., 1985, “Prediction of Turbulent Rough-Wall Skin Friction Using a Discrete Element Approach,” ASME J. Fluids Eng., 107, pp. 251–257.
Scaggs,  W. F., Taylor,  R. P., and Coleman,  H. W., 1988, “Measurement and Prediction of Rough Wall Effects on Friction Factor—Uniform Roughness Results,” ASME J. Fluids Eng., 110, pp. 385–391.
Tolpadi, A. K., and Crawford, M. E., 1998, “Predictions of the Effect of Roughness on Heat Transfer From Turbine Airfoils,” ASME Paper No. 98-GT-087.
Sigal,  A., and Danberg,  J., 1990, “New Correlation of Roughness Density Effect on the Turbulent Boundary Layer,” AIAA J., 28, pp. 554–556.
Pinson,  M. W., and Wang,  T., 2000, “Effect of Two-Scale Roughness on Boundary Layer Transition over a Heated Flat Plate: Part I—Surface Heat Transfer,” ASME J. Turbomach., 122, pp. 301–307.
Taylor, R. P., and Chakroun, W. M., 1992, “Heat Transfer in the Turbulent Boundary Layer With a Short Strip of Surface Roughness,” Paper No. AIAA 92-0249.
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Soechting, F., 2000, private communication.

Figures

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Examples of TBC spallation
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Examples of TBC spallation life-cycle evolution
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Chordwise roughness variation across FC rows
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Spanwise roughness variations downstream of film cooling rows
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Spanwise LE waviness pattern due to erosion/deposits (λ=5 mm, raw data with meanline)
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Examples of surface pitting and erosion
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Other forms of contaminants: (a) TBC residue islands and (b) scale from salt and sand
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Leading edge deposits/contaminants
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Two distinct forms of fuel deposits
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(a) Maximum Ra versus service hours for present study; (b) similar data reproduced from Tarada and Suzuki 3, Fig. 2
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Various transitions from region to region: (a) gradual, (b) abrupt, and (c) spallation related
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(a, b) Traces showing variations in roughness from region to region on PS and SS
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Regional values of Rt (min, avg, and max) from aggregate data
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Regional values of Ra (min, avg, and max) from aggregate data
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PS/MC/Hub chordwise trace: raw data, meanline, and data with meanline removed
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Confocal microscopic image of PS/TE fuel deposits

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