THE APPLICATION OF ADIABATIC FILM COOLING EFFECTIVENESS TO NON-ADIABATIC BLADE COOLING DESIGN Conference Paper uri icon

abstract

  • Copyright © 1983 by ASME. The effect of heat transfer on film cooling has been studied analytically. The proposed model shows that the non-adiabatic film cooling effectiveness will increase with increasing of the heat transfer parameter, U / (pVCp)2, on the convex, the flat and the concave walls over the entire range of film cooling parameter, X/MS. On the convex wall with a blowing rate, M, of 0.51 and a heat transfer parameter of 10 -3 at the typical engine conditions, the nonadiabatic effectiveness can be higher than the adiabatic effectiveness by 45% at a film cooling parameter of 10 3 ; while the film temperature can be lower than the adiabatic wall by 18°C (32°F) at a dimensionless distance of 500. The model can be extended and applied to the heat transfer analysis for any kind of turbine blade with film cooling.

author list (cited authors)

  • LEE, C. P., & HAN, J. C.

complete list of authors

  • LEE, CP||HAN, JC

publication date

  • January 1983