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Article

Transonic and Low Supersonic Flow Losses of Two Steam Turbine Blades at Large Incidences

[+] Author and Article Information
S.-M. Li, T.-L. Chu, Y.-S. Yoo, W. F. Ng

Department of Mechanical Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA 24060

J. Fluids Eng 126(6), 966-975 (Mar 11, 2005) (10 pages) doi:10.1115/1.1839927 History: Received June 20, 2003; Revised June 09, 2004; Online March 11, 2005
Copyright © 2004 by ASME
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References

Jouini,  D. B. M., Sjolander,  S. A., and Moustapha,  S. H., 2001, “Aerodynamic Performance of A Transonic Turbine Cascade at Off-Design Conditions,” ASME J. Turbomach., 123, pp. 510–518.
Benner,  M. W., Sjolander,  S. A., and Moustapha,  S. H., 1997, “Influence of Leading-Edge Geometry on Profile Losses in Turbines at Off-Design Incidences: Experimental Results and Improved Correlation,” ASME J. Turbomach., 119, pp. 193–200.
Goobie, S., Moustapha, S. H., and Sjolander, S. A., 1989, “An Experimental Investigation of the Effect of Incidence on the Two-Dimensional Performance of an Axial Turbine Cascade,” ISABE Paper No. 89-7019.
Hodson, H. P., and Dominy, R. G., 1986, “The Off-Design Performance of a Low Pressure Steam Turbine Cascade,” ASME Paper No. 86-GT-188.
Ainley, D. G., and Mathieson, G. C. R., 1951, “A Method of Performance Estimation for Axial Flow Turbines,” British ARC, R&M 2974.
Craig,  H. R. M., and Cox,  H. J. A., 1971, “Performance Estimate of Axial Flow Turbines,” Proc. Inst. Mech. Eng., 185, No. 32, pp. 407–424.
Martelli, F., and Boretti, A. A., 1987, “Transonic Profile Losses in Turbine Blades,” Institute of Mech. Engrs, C266.
Chen, S., 1987, “A Loss Model for the Transonic Flow Low-Pressure Steam Turbine Blades,” Institute of Mech. Engrs. C26.
Dunham,  J., and Came,  P. M., 1970, “Improvements to the Ainley/Mathieson Method of Turbine Performance Prediction,” ASME J. Eng. Power, 92, pp. 252–256.
Kacker,  S. C., and Okapuu,  U., 1982, “A Mean Line Prediction Method for Axial Flow Turbine Efficiency,” ASME J. Eng. Power, 104, pp. 111–119.
Chu, T. L., 1999, “Transonic Flow Losses of Two Steam Turbine Blades at Large Incidences,” M.S. thesis, Department of Mechanical Engineering, Virginia Tech.
Mindock, Mike, 2001, personal communication.
Kiock,  R., Lehthaus,  F., Baines,  N. C., and Sieverding,  C. H., 1986, “The Transonic Flow Through a Plane Turbine Cascade as Measured in Four European Wind Tunnels,” ASME J. Eng. Gas Turbines Power, 108, pp. 277–284.
Mee,  D. J., Baines,  N. C., Oldfield,  M. L. G., and Dickens,  T. E., 1992, “An Examination of the Contributions to Loss on a Transonic Blade Cascade,” ASME J. Turbomach., 114, pp. 155–162.
Detemple-Laake, E., 1991, “Detailed Measurements of the Flow Field in a Transonic Turbine Cascade,” ASME Paper, 91-GT-29.
Lakshminarayana, B., 1996, Fluid Dynamics and Heat Transfer of Turbomachinery, Wiley, New York, p. 558.

Figures

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Nomenclature of blade geometry
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Shadowgraphs at design incidence of 5° (Mach 0.96, Mach 1.02, and Mach 1.12)
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Shadowgraphs at 35° incidence (Mach 0.99, Mach 1.05, and Mach 1.10)
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Schlieren at −25° incidence (Mach 1.12)
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A sample of the probe traverse data: Total pressure ratio of exit over inlet
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Pressure loss coefficients with exit Mach numbers and incidences, Blade A (i=−25, 5, and 35°)
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Pressure loss coefficients with exit Mach numbers and incidences, Blade B (i=−34, −4, and 26°)
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Comparison of test data at design incidences (Blades A and B)
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Comparison of test data at extreme negative incidences (Blade A, i=−25 and Blade B, i=−34)
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Comparison of test data at extreme positive incidences (Blade A, i=35 and Blade B, i=26)
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Comparison of test data with correlations for blade A at design incidence (5°)
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Comparison of test data with correlations for blade B at design incidence (−4°)
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Comparison of correlations with test data by Kiock et al. 13
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Comparison of correlations with test data by Mee et al. 14 model)
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Comparison of correlations with test data by Detemple-Laake 15

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