Mechanics of Film Cooling - Part 1

The Mechanics of Film Cooling I - Part 1 ELDON

Thin liquid wall fillTIs flowing under the influence of high-velocity turbulent gas streaIllS were studied for the purpose of obtaining an understanding of the Illechanics of filIll cooling. Conditions which insure liquid-filIll attachIllent to solid surfaces without loss of unevaporated liquid to the gas streaIll when siIllple radial-hole injectors are used were found; the IllaxiIlluIll allowa...

Experimental Analysis of Fracture and Damage Mechanics of Pre-Stressed Concrete Sleepers B70: Part B- Analysis

Initial cracks occur in high strength concrete sleepers for various reasons, such as shrinkage and wrong curing and long lifetime of over 50 years of sleepers. These cracks may lead to complete failure of the structure. In order to more accurately design the sleepers, fracture mechanics (not strength of materials) should be incorporated. In order to achieve this purpose, it is important to fore...

Film Cooling Measurements for Novel Hole Configurations

The effect of film cooling slot exit area and shape is studied. Detailed heat transfer coefficient and film effectiveness measurements are obtained simultaneously using a single transient IR thermography technique. Two designs with a crescent shaped exit and a slot exit are considered. The results show that the crescent shaped exit provides significantly higher film cooling effectiveness than t...

Endwall Film-Cooling in Axial Flow Turbines

Evolution Strategies for Film Cooling Optimization

References 1Al Taweel, A. M., and Landau, J., “Turbulence Modulation in TwoPhase Jets,” International Journal of Multiphase Flow, Vol. 3, No. 2, 1977, pp. 341–351. 2Gore, R. A., and Crowe, C. T., “Effects of Particle Size on Modulating Turbulent Intensity,” International Journal of Multiphase Flow, Vol. 15, No. 2, 1989, pp. 279–285. 3Schreck, S., andKleis, S. J., “ModiŽ cationofGrid-GeneratedTu...