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Keywords: film cooling effectiveness
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Proceedings Papers

Proc. ASME. GT2022, Volume 6A: Heat Transfer — Combustors; Film Cooling, V06AT12A028, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-82514
... the coolant coverage area of cylindrical holes, and increase the laterally-averaged film cooling effectiveness. For double-jet holes, the internal coolant crossflow also increases the laterally averaged film cooling effectiveness, but the improvement is limited. For the -45o compound angle film hole of double...
Proceedings Papers

Proc. ASME. GT2022, Volume 6A: Heat Transfer — Combustors; Film Cooling, V06AT12A020, June 13–17, 2022
Publisher: American Society of Mechanical Engineers
Paper No: GT2022-82118
... affected by thermal barrier coatings (TBC) spraying, resulting in the variations of aerodynamic and thermal performances of film cooling. In this paper, adiabatic film cooling effectiveness distribution contours of twisted vanes with multi-row film cooling holes in fan-shaped cascade tunnel were obtained...
Proceedings Papers

Proc. ASME. GT2020, Volume 7B: Heat Transfer, V07BT12A024, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14650
... Abstract Gas turbines have been widely used. With the continuous improvement of the performance of gas turbines, the turbine inlet temperature has greatly exceeded the heat resistance limit of the turbine blade material, so advanced cooling technology is required. The film cooling effectiveness...
Proceedings Papers

Proc. ASME. GT2020, Volume 7B: Heat Transfer, V07BT12A044, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-15101
... at different density ratios. Consequently, an experiment on a fully-cooled turbine vane with multi-row film cooling holes was carried out to investigate the effect of mass flow ratio and density ratio on the film cooling performance, in which the film cooling effectiveness and heat transfer coefficient...
Proceedings Papers

Proc. ASME. GT2020, Volume 7B: Heat Transfer, V07BT12A045, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-15110
... is used to carry out experiments under different turbulence intensities and mass flux ratios, and the distribution of the film cooling effectiveness on the entire surface is studied in detail. In this study, a basic turbine blade and an improved turbine blade are investigated. The film cooling hole...
Proceedings Papers

Proc. ASME. GT2020, Volume 7B: Heat Transfer, V07BT12A062, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-15830
... it forms a vortex structure. Then high film cooling effectiveness region around the cooling hole appears. In the meanwhile, when approaching flow is turbulent, the laterally discharged cooling flow no more forms vortex structure and dissipated to the main flow and resultant high effectiveness region...
Proceedings Papers

Proc. ASME. GT2013, Volume 3B: Heat Transfer, V03BT13A042, June 3–7, 2013
Publisher: American Society of Mechanical Engineers
Paper No: GT2013-95042
... by industry as well as research organizations have been undertaken to establish high efficient film cooling technologies. It is common knowledge today that film cooling effectiveness degradation is caused by secondary flows inside the cooling jets, i.e. the Counter-Rotating Vortices (CRV) or sometimes also...
Proceedings Papers

Proc. ASME. GT2013, Volume 3B: Heat Transfer, V03BT13A040, June 3–7, 2013
Publisher: American Society of Mechanical Engineers
Paper No: GT2013-95027
... by industry as well as research organizations have been undertaken to establish high efficient film cooling technologies. It is a today common knowledge that film cooling effectiveness degradation is caused by secondary flows inside the cooling jets, i.e. the Counter-Rotating Vortices (CRV) or sometimes also...
Proceedings Papers

Proc. ASME. GT2012, Volume 4: Heat Transfer, Parts A and B, 1259-1268, June 11–15, 2012
Publisher: American Society of Mechanical Engineers
Paper No: GT2012-68325
... in this particular area. An iterative method is introduced considering the desired mass flow rate and the prevailing total pressure in order to calculate the slot area and to avoid reverse flow. The variation of the film cooling effectiveness indicates a very uniform distribution of cooling air behind the slot which...
Proceedings Papers

Proc. ASME. GT2012, Volume 4: Heat Transfer, Parts A and B, 1299-1310, June 11–15, 2012
Publisher: American Society of Mechanical Engineers
Paper No: GT2012-68400
... phenomena film cooling effectiveness 1 Copyright © 2012 by ASME EXPERIMENTAL AND NUMERICAL INVESTIGATIONS OF THE NEKOMIMI FILM COOLING TECHNOLOGY Karsten Kusterer, Nurettin Tekin B&B-AGEMA GmbH Jülicher Strasse 338 D-52070 Aachen, Germany kusterer@bub-agema.de tekin@bub-agema.de Dieter Bohn Institute...
Topics: Film cooling
Proceedings Papers

Proc. ASME. GT2010, Volume 4: Heat Transfer, Parts A and B, 1503-1515, June 14–18, 2010
Publisher: American Society of Mechanical Engineers
Paper No: GT2010-22604
... a comparison of the film cooling effectiveness between the shaped film cooling technique and the novel double jet film cooling technique for the high blowing ratios M = 1, M = 1.5 and M = 2. Various geometries of fan-shaped holes with lateral expansion angles of 10°, 14° and 18° are used for the comparison...
Topics: Film cooling
Proceedings Papers

Proc. ASME. GT2007, Volume 4: Turbo Expo 2007, Parts A and B, 661-670, May 14–17, 2007
Publisher: American Society of Mechanical Engineers
Paper No: GT2007-27850
... 10 03 2009 Cross film injection is employed in this study to generate a shear-induced secondary flow having the same sense of rotation as that of the passage vortex. Local heat transfer coefficient and film cooling effectiveness on the endwall surface are measured using liquid crystal...