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TECHNICAL PAPERS

A Converging Slot-Hole Film-Cooling Geometry—Part 1: Low-Speed Flat-Plate Heat Transfer and Loss

[+] Author and Article Information
J. E. Sargison

School of Engineering, University of Tasmania, Hobart, Tasmania 7001, Australiae-mail: jane.sargison@utas.edu.au

S. M. Guo, M. L. G. Oldfield

Department of Engineering Science, University of Oxford, Oxford OX1 3PJ, UK

G. D. Lock

Department of Mechanical Engineering, University of Bath, Bath BA2 7AY, UK

A. J. Rawlinson

Rolls Royce plc, Derby DE24 8BJ, UK

J. Turbomach 124(3), 453-460 (Jul 10, 2002) (8 pages) doi:10.1115/1.1459735 History: Received October 23, 2000; Online July 10, 2002
Copyright © 2002 by ASME
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References

Sargison,  J. E., Guo,  S. M., Oldfield,  M. L. G., Lock,  G. D., and Rawlinson,  A. J., 2002, “A Converging Slot-Hole Film-Cooling Geometry—Part 2: Transonic Guide Vane Heat Transfer and Loss,” ASME Paper No. 2001-GT-127, ASME J. Turbomach., 124, pp. 461–471.
Denton,  J. D., 1993, “Loss Mechanisms in Turbomachines,” ASME J. Turbomach., 115, pp. 621–656.
Eckert, E. R. G., and Drake, R. M., 1972, Analysis of Heat and Mass Transfer, McGraw Hill, New York, NY, pp. 453–466.
Farmer, J. P., Seager, D. J., and Liburdy, J. A. 1997 “The Effect of Shaping Inclined Slots on Film Cooling Effectiveness and Heat Transfer Coefficient,” ASME Paper No. 97-GT-399.
Ligrani,  P., Ciriello,  S., and Bishop,  D. T., 1992 “Heat Transfer, Adiabatic Effectiveness and Injectant Distributions Downstream of a Single Row and Two Staggered Rows of Compound Angle Film-Cooling Holes,” ASME J. Turbomach., 114, pp. 687–700.
Sen,  B., Schmidt,  D. L., and Bogard,  D. G., 1996, “Film Cooling with Compound Angle Holes: Heat Transfer,” ASME J. Turbomach., 118, pp. 800–806.
Schmidt, D. L., Sen, B., and Bogard, D. G., 1994, “Film Cooling with Compound Angle Holes: Adiabatic Effectiveness,” ASME Paper No. 94-GT-312.
Gritsch, M., Schulz, A., and Wittig, S., 1998, “Heat Transfer Coefficient Measurements of Film-Cooling Holes with Expanded Exits,” ASME Paper No. 98-GT-28.
Gritsch,  M., Schulz,  A., and Wittig,  S., 1997, “Adiabatic Wall Effectiveness Measurements of Film-Cooling Holes with Expanded Exits,” ASME J. Turbomach., 120, pp. 560–567.
Thole,  K., Gritsch,  M., Schulz,  A., and Wittig,  S., 1998, “Flowfield Measurements for Film-Cooling Holes with Expanded Exits,” ASME J. Turbomach., 120, pp. 327–336.
Day,  C. R. B., Oldfield,  M. L. G., and Lock,  G. D., 2000, “Aerodynamic Performance of an Annular Cascade of Film Cooled Nozzle Guide Vanes Under Engine Representative Conditions,” Exp. Fluids, 29, pp. 117–129.
Schlichting, H., 1979, Boundary-Layer Theory, McGraw-Hill Book Company, Seventh Edition, New York, NY.
Sargison, J. E., Guo, S. M., Oldfield, M. L. G., Lock, G. D., and Rawlinson, A. J., 2000, “The Variation of Heat Transfer Coefficient, Adiabatic Effectiveness and Aerodynamic Loss with Film Cooling Hole Shape,” Proc Turbine 2000, International Symposium on Heat Transfer in Gas Turbine Systems, Turkey.
Jones, T. V., 1991, “Definition of Heat Transfer Coefficient in the Turbine Situation,” IMechE Paper No. C423/046, IMechE Turbomachinery Conference.
Jones,  T. V., 1999, “Theory for the use of Foreign Gas in Simulating Film Cooling,” Int. J. Heat Fluid Flow, 20, pp. 349–354.
Kays, W. M., and Crawford, M. E., 1993, Convective Heat and Mass Transfer, McGraw-Hill, New York, NY.
Mee,  D. J., Ireland,  P. T., and Bather,  S., 1999, “Measurement of the temperature field downstream of simulated leading-edge film-cooling holes,” Exp. Fluids, 27, pp. 273–283.

Figures

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Basic console configuration—(a) side view section through blade surface; (b) plan view of console viewed from blade surface; (c) plan section along hole centerline
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Uni graphics surface definition of two console film-cooling holes
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Osney laboratory low-speed wind tunnel
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Typical film-cooling hole configurations
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Tunnel wall showing layout of cooling holes and heated flat plate, overlaid with typical liquid crystal display with processed temperature contour
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Typical set of data points and fitted straight line used in Matlab data manipulation
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Cylindrical hole effectiveness compared with published data
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Cylindrical hole heat transfer coefficient compared with published data
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(a)–(d) Lateral variation in adiabatic effectiveness, IIDEAL=1.1,Red=36,000
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Laterally averaged adiabatic effectiveness, IIDEAL=1.1,Red=36,000
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(a)–(d) Lateral variation in heat transfer coefficient, IIDEAL=1.1,Red=36,000
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Laterally averaged heat transfer coefficient, IIDEAL=1.1,Red=36,000
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Measurement and calculation planes for aerodynamic loss
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Comparison of aerodynamic loss of four cooling configurations, IIDEAL=1.1,Red=36,000
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Film-cooling hole jets contour without crossflow
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Film-cooling hole jet contour with crossflow

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