Abstract
Experimental and numerical researches were conducted to investigate the cooling performance of a single row of consoles (converging slot-hole) on a large-scale flat-plate model. The results show that the coolant flow from a row of consoles shows good lateral uniformity of adiabatic effectiveness, with regions of slightly enhanced cooling occurring between the consoles. For the console cooling geometry, the interaction between coolant jet from inclined console and the mainstream flow results in reasonable vortices configuration. A pair of counter rotating vortices originate from the edge of slot, not from the centerline of film holes and the rotating direction is contrary to conventional cylindrical hole. The heat transfer coefficient ratio is a little bigger for the console case than conventional cylindrical hole, and the discharge coefficient for a console is larger than that for cylindrical film cooling hole.
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Paxson D E, Perkins H D. Thermal load considerations for detonative combustion-based gas turbine engines. AIAA Paper 2004-3396. 2004
Huang W, Qin H, Luo S B, et al. Research status of key techniques for shock-induced combustion ramjet (shcramjet) engine. Sci China Ser E-Tech Sci, 2010, 53: 220–226
Andreopoulous J, Rodi W. Experimental investigation of jets in a crossflow. J Fluid Mech, 1984, 138: 93–127
Gogineni S P, Rivir R B, Pestian D J, et al. PIV measurements of flat plate film cooling flows with high free stream turbulence. AIAA Paper 96-0617, 1996
Bunker R S. A review of turbine shaped film cooling technology. ASME J Heat Transfer, 2005, 127: 441–453
Haven B A, Yamagata D K, Kurosaka M, et al. Anti kidney pair of vortices in shaped holes and their influence on film cooling effectiveness. ASME Paper 97-GT-45, 1997
Gritsch M, Schuulz A, Wittig S. Adiabatic wall effectiveness measurements of film-cooling holes with expanded exits. J Turbomach Trans ASME, 1997, 120: 560–567
Gritsch M, Colban W, Schar H. Effect of hole geometry on the thermal performance of fan-shaped film cooling holes. J Turbomach Trans ASME, 2005, 127: 718–725
Thole K, Gritsch M, Schuulz A, et al. Flowfield measurements for film-cooling holes with expanded exits. J Turbomach Trans ASME, 1996, 119: 327–336
Fric T F, Campbell R P. Method for improving the cooling effectiveness of a gaseous coolant stream which flows through a substrate and related articles of manufacture. US Patent No. 6383602, 2002
Bunker R S. Film cooling effectiveness due to discrete holes within a transverse surface slot. ASME Paper GT 2002-30178, 2002
Nasir H, Acharya S, Ekkad S. Improved film cooling from cylindrical angled holes with triangular tabs: effect of tab orientations. Int J Heat Fluid Flow, 2003, 24: 657–668
Li Y K, Zhang J Z, Yao Y. Numerical investigation on improvement of film cooling effectiveness using delta-shaped tabs (in Chinese). J Aerospace Power, 2006, 21(1): 83–87
Sargison J E, Guo S M, Oldfield M LG, et al. A converging slot-hole film-cooling geometry.-Part 1: low speed flat-plate heat transfer and loss. J Turbomach Trans ASME, 2002, 124: 453–460
Sargison J E, Guo S M, Oldfield M L G, et al. A converging slot-hole film-cooling geometry-part 2: transonic nozzle guide vane heat transfer and loss. J Turbomach Trans ASME, 2002, 124: 461–471
Sargison J E, Oldfield M L G, Guo S M, et al. Flow visualization of the external flow from a converging slot-hole film-cooling geometry. Exp Fluids, 2005, 38: 304–318
Azzi A, Jubran B A. Numerical modelling of film cooling from converging slot hole. Heat Mass Transfer, 2007, 43: 381–388
Yao Y, Zhang J Z, Zhou N. Numerical investigation on improvement of film cooling effectiveness with console hole (in Chinese). J Aerospace Power, 2008, 23(10): 1772–1777
Liu C L, Zhu H R, Bai J T, et al. Film cooling performance of converging slot holes with different exit-entry area aatio. ASME Paper GT 2009-59002, 2009
Liu C L, Zhu H R, Bai J T, et al. Experimental research on the thermal performance of converging slot holes with different divergence angles. Exp Therm Fluid Sci, 2009, 33: 808–817
Carlomagno G M, Cardone G. Infrared thermography for convective heat transfer measurements. Exp Fluids, 2010, 49: 1187–1218
Kline S J, McClintock F A. Describing uncertainties in single sample experiments. Mech Eng, 1953, 75: 3–8
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Yao, Y., Zhang, J. Investigation on film cooling characteristics from a row of converging slot-holes on flat plate. Sci. China Technol. Sci. 54, 1793–1800 (2011). https://doi.org/10.1007/s11431-011-4378-0
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DOI: https://doi.org/10.1007/s11431-011-4378-0