0
TECHNICAL PAPERS

Unsteady Wake Effect on Film Temperature and Effectiveness Distributions for a Gas Turbine Blade

[+] Author and Article Information
Shuye Teng, Dong Kee Sohn, Je-Chin Han

Turbine Heat Transfer Laboratory, Department of Mechanical Engineering, Texas A&M University, College Station, TX 77843-3123

J. Turbomach 122(2), 340-347 (Feb 01, 1999) (8 pages) doi:10.1115/1.555457 History: Received February 01, 1999
Copyright © 2000 by ASME
Your Session has timed out. Please sign back in to continue.

References

Nirmalan,  V., and Hylton,  L., 1990, “An Experimental Study of Turbine Vane Heat Transfer With Leading Edge and Downstream Film Cooling,” ASME J. Turbomach., 112, pp. 477–487.
Abuaf, N., Bunker, R., and Lee, C. P., 1995, “Heat Transfer and Film Cooling Effectiveness in a Linear Airfoil Cascade,” ASME Paper No. 95-GT-3.
Camci,  C., and Arts,  T., 1990, “An Experimental Convective Heat Transfer Investigation Around a Film-Cooled Gas Turbine Blade,” ASME J. Turbomach., 112, pp. 497–503.
Takeishi,  K., Aoki,  A., Sato,  T., and Tsukagoshi,  K., 1992, “Film Cooling on a Gas Turbine Rotor Blade,” ASME J. Turbomach., 114, pp. 828–834.
Ito,  S., Goldstein,  R. J., and Eckert,  E. R. G., 1978, “Film Cooling of a Gas Turbine Blade,” ASME J. Eng. Power, 100, pp. 476–481.
Haas,  W., Rodi,  W., and Schönung,  B., 1992, “The Influence of Density Difference Between Hot and Coolant Gas on Film Cooling by a Row of Holes: Predictions and Experiments,” ASME J. Turbomach., 114, pp. 747–755.
Ames,  F. E., 1998, “Aspects of Vane Film Cooling With High Turbulence: Part I—Heat Transfer; Part II—Adiabatic Effectiveness,” ASME J. Turbomach., 120, pp. 768–784.
Abhari,  R. S., and Epstein,  A. H., 1994, “An Experimental Study of Film Cooling in a Rotating Transonic Turbine,” ASME J. Turbomach., 116, pp. 63–70.
Ou,  S., Han,  J. C., Mehendale,  A. G., and Lee,  C. P., 1994, “Unsteady Wake Over a Linear Turbine Blade Cascade With Air and CO2 Film Injection: Part I—Effect on Heat Transfer Coefficients,” ASME J. Turbomach., 116, pp. 721–729.
Mehendale,  A. B., Han,  J. C., Ou,  S., and Lee,  C. P., 1994, “Unsteady Wake Over a Linear Turbine Blade Cascade With Air and CO2 Film Injection: Part II—Effect on Film Effectiveness and Heat Transfer Distributions,” ASME J. Turbomach., 116, pp. 730–737.
Vedula, R. J., and Metzger, D. E., 1991, “A Method for Simultaneous Determination of Local Effectiveness and Heat Transfer Distributions in Three-Temperature Convection Situations,” ASME Paper No. 91-GT-345.
Ekkard,  S. V., Zapata,  D., and Han,  J. C., 1997, “Heat Transfer Coefficients Over a Flat Surface With Air and CO2 Injection Through Compound Angle Holes Using a Transient Liquid Crystal Image Method,” ASME J. Turbomach., 119, No. 3, pp. 580–586.
Ekkard,  S. V., Zapata,  D., and Han,  J. C., 1997, “Film Effectiveness Over a Flat Surface With Air and CO2 Injection Through Compound Angle Holes Using a Transient Liquid Crystal Image Method,” ASME J. Turbomach., 119, No. 3, pp. 587–593.
Du,  H., Han,  J. C., and Ekkard,  S. V., 1998, “Effect of Unsteady Wake on Detailed Heat Transfer Coefficient and Film Effectiveness Distributions for a Gas Turbine Blade,” ASME J. Turbomach., 120, pp. 808–817.
Du,  H., Ekkad,  S. V., and Han,  J., 1999, “Effect of Unsteady Wake With Trailing Edge Coolant Ejection on Film Cooling Performance for a Gas Turbine Blade,” ASME J. Turbomach., 121, pp. 448–453.
Drost,  U., and Bölcs,  A., 1999, “Investigation of Detailed Film Cooling Effectiveness and Heat Transfer Distributions on a Gas Turbine Airfoil,” ASME J. Turbomach., 121, pp. 233–242.
Kohli,  A., and Bogard,  D. G., 1998, “Fluctuating Thermal Field in the Near-Hole Region for Film Cooling Flows,” ASME J. Turbomach., 120, pp. 86–91.
Sohm, D. K., Teng, S., and Han, J. C., 1998, “Film Temperature and Effectiveness Measurements on a Cylindrical Leading Edge Film Cooling Model,” Heat Transfer 1998, Proc. of 11th IHTC, 6 , pp. 571–576, Aug. 23–28, Kyongju, Korea.

Figures

Grahic Jump Location
(a) Five-blade cascade with center blade coated with liquid crystal and viewed by two cameras; (b) a two-dimensional view of the film-cooled blade model
Grahic Jump Location
Measurement planes at selected locations with a cold-wire probe
Grahic Jump Location
Film temperature field at different locations for the case of M=0.8 and without wake effect (S=0)
Grahic Jump Location
Film temperature field at different locations for the case of M=0.8 and with wake effect (S=0.1)
Grahic Jump Location
Detailed film temperature contour at X/D=10 for the cases of M=0.8, without and with wake effect
Grahic Jump Location
Effect of blowing ratio on film temperature field (S=0,X/D=10)
Grahic Jump Location
Effect of unsteady wake and blowing ratio on detailed film cooling effectiveness distribution
Grahic Jump Location
Film cooling effectiveness distribution: (a) along film hole centerline; (b) spanwise-averaged
Grahic Jump Location
Detailed Nusselt number distribution for cases at different blowing ratios, with and without wake effect
Grahic Jump Location
Spanwise-averaged Nusselt number distribution for: (a) steady flow; (b) unsteady flow with wake effect

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In