An experimental investigation of a new hybrid film cooling scheme

作者: MG Ghorab , IG Hassan , None

DOI: 10.1016/J.IJHEATMASSTRANSFER.2010.05.026

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摘要: Abstract This paper presents an experimental investigation of the film cooling performance a hybrid scheme using thermochromic liquid crystal technique. The includes two consecutive hole configurations with interior bending. was analyzed for blowing ratios ranging from 0.5 to 1.5. bending effect this throttles secondary flow causing it spread widely over downstream surfaces, and consequently enhance at both low high ratios. results showed that augmented centerline laterally averaged effectiveness compared other schemes in literature.

参考文章(28)
J.G. Marakis, G. Brenner, F. Durst, Monte Carlo simulation of a nephelometric experiment International Journal of Heat and Mass Transfer. ,vol. 44, pp. 989- 998 ,(2001) , 10.1016/S0017-9310(00)00163-0
Y. MAKKI, G. JAKUBOWSKI, An experimental study of film cooling from diffused trapezoidal shaped holes 4th Thermophysics and Heat Transfer Conference. ,(1986) , 10.2514/6.1986-1326
Y. Yu, C.-H. Yen, T. I.-P. Shih, M. K. Chyu, S. Gogineni, Film Cooling Effectiveness and Heat Transfer Coefficient Distributions Around Diffusion Shaped Holes Journal of Heat Transfer-transactions of The Asme. ,vol. 124, pp. 820- 827 ,(2002) , 10.1115/1.1418367
R.J. Goldstein, E.R.G. Eckert, F. Burggraf, Effects of hole geometry and density on three-dimensional film cooling International Journal of Heat and Mass Transfer. ,vol. 17, pp. 595- 607 ,(1974) , 10.1016/0017-9310(74)90007-6
S. V. Ekkad, D. Zapata, J. C. Han, Film effectiveness over a flat surface with air and CO2 injection through compound angle holes using a transient liquid crystal image method Journal of Turbomachinery-transactions of The Asme. ,vol. 119, pp. 587- 593 ,(1997) , 10.1115/1.2841162
Donald L. Schmidt, Basav Sen, David G. Bogard, Effects of Surface Roughness on Film Cooling Volume 4: Heat Transfer; Electric Power; Industrial and Cogeneration. ,(1996) , 10.1115/96-GT-299
R. J. Goldstein, J. R. Taylor, Mass Transfer in the Neighborhood of Jets Entering a Crossflow Journal of Heat Transfer. ,vol. 104, pp. 715- 721 ,(1982) , 10.1115/1.3245190
J.L. Hay, D.K. Hollingsworth, A comparison of trichromic systems for use in the calibration of polymer-dispersed thermochromic liquid crystals Experimental Thermal and Fluid Science. ,vol. 12, pp. 1- 12 ,(1996) , 10.1016/0894-1777(95)00013-5
J. W. Baughn, M. R. Anderson, J. E. Mayhew, J. D. Wolf, Hysteresis of Thermochromic Liquid Crystal Temperature Measurement Based on Hue Journal of Heat Transfer-transactions of The Asme. ,vol. 121, pp. 1067- 1072 ,(1999) , 10.1115/1.2826057
Christian Saumweber, Achmed Schulz, Sigmar Wittig, Free-Stream Turbulence Effects on Film Cooling With Shaped Holes Journal of Turbomachinery-transactions of The Asme. ,vol. 125, pp. 65- 73 ,(2003) , 10.1115/1.1515336