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, Ū / (ρVCp)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 non-adiabatic effectiveness can be higher than the adiabatic effectiveness by 45% at a film cooling parameter of 103; 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.
The Application of Adiabatic Film Cooling Effectiveness to Non-Adiabatic Blade Cooling Design
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Lee, CP, & Han, JC. "The Application of Adiabatic Film Cooling Effectiveness to Non-Adiabatic Blade Cooling Design." Proceedings of the 1983 Joint Power Generation Conference: GT Papers. 1983 Joint Power Generation Conference: GT Papers. Indianapolis, Indiana, USA. September 25–29, 1983. V001T02A001. ASME. https://doi.org/10.1115/83-JPGC-GT-1
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