Results 251 to 260 of about 102,014 (306)
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Jets in a Crossflow: Effects of Geometry and Blowing Ratio
Journal of Fluids Engineering, 1999The flow field characteristics of three different geometries of square jets in a crossflow at various blowing ratios are examined. The geometries considered are: perpendicular, streamwise-inclined, and spanwise-inclined jets. The inclined jets are at a 30 deg angle to the wind tunnel floor.
M. J. Findlay +2 more
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Effect of Uncertainty in Blowing Ratio on Film Cooling Effectiveness
Volume 3: Gas Turbine Heat Transfer; Transport Phenomena in Materials Processing and Manufacturing; Heat Transfer in Electronic Equipment; Symposium in Honor of Professor Richard Goldstein; Symposium in Honor of Prof. Spalding; Symposium in Honor of Prof. Arthur E. Bergles, 2013In this study the effect of randomness of blowing ratio on film cooling performance is investigated by combining direct numerical simulations with a stochastic collocation approach. The geometry includes a 35-degree inclined jet with a plenum attached to it. The blowing ratio variations are assumed to have a truncated Gaussian distribution with mean of
Hessam Babaee +2 more
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Effect of blowing ratio on the relaminarization phenomenon over convex curved wall
Acta Mechanica Sinica, 2022zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Su, Wei-Yi +2 more
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The Role of Density Ratio and Blowing Ratio on Film Cooling in a Vane Passage
Volume 4: Heat Transfer, Parts A and B, 2010Temperature and heat flux measurements have been obtained in a film-cooled, heated fixed-vane cascade. The cascade facility has the capability to deliver high-pressure air through the vane passages at high flow rates (3.5 lbm/s; 1.59 kg/s). Prior to entering the vane test section, pressurized mainstream air has been heated by a natural gas-burning ...
James W. Post, Sumanta Acharya
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Effect of film hole geometry and blowing ratio on film cooling performance
Applied Thermal Engineering, 2020Abstract In this paper, four kinds of film holes (cylindrical hole, fan-shaped hole, anti-vortex hole and sister hole) are experimentally and numerically studied to investigate the effect of hole geometry and blowing ratio on film cooling performance and flow structure.
Nan Cao, Xue Li, Zeyu Wu, Xiang Luo
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Effects of Blowing Ratio on Multiple Shallow Angle Film Cooling Holes
Applied Mechanics and Materials, 2012This paper presents the investigation on the effects of the blowing ratio of multiple shallow angle film cooling holes. Multiple film cooling holes having a shallow hole angle (θ = 20°), arranged to perform in-line hole configuration has been considered in the present study.
Kamil Abdullah, Ken Ichi Funazaki
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Aerodynamics of Low-Blowing-Ratio Fuselage Injection into a Supersonic Freestream
Journal of Spacecraft and Rockets, 2005A parametric characterization of the surface flow structure and associated aerodynamic loading for injection into a Mach 3.0 freestream through jets mounted into the side of missile fuselage (sharp-coned cylinder) was experimentally achieved. The experimental methods included surface oil flow visualization, shadowgraph photography, and pressure ...
Zakaria Mahmud, Rodney D. W. Bowersox
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Film Cooling Jet Under Varying Blowing Ratio
Proceedings of Global Power & Propulsion SocietyThe blowing ratio (M) determines the coverage and extent of attachement/detachment of a film cooling jet over and to a downstream flat endwall (or turbine blade surface). However, insight into their alteration due to the blowing ratio has been largely inconclusive. Therefore, we aim to elucidate its role.
Marc Gomez-Olive Fernandez +3 more
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Influence of Blowing Ratio on the Double-Jet Ejection of Cooling Air
Volume 4: Turbo Expo 2007, Parts A and B, 2007Further improvement of the thermal efficiency of modern gas turbines can be achieved by a further reduction of the cooling air amount. Therefore, it is necessary to increase the cooling effectiveness so that the available cooling air fulfils the cooling task even if the amount has been reduced. In particular, the cooling effort for the vanes and blades
Karsten Kusterer +3 more
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Optimization of the blowing ratio for film cooling on a flat plate
International Journal of Numerical Methods for Heat & Fluid Flow, 2017Purpose The purpose of this paper is to report the result of a numerical investigation of film cooling performance on a flat plate for finding optimum blowing ratios. Design/methodology/approach Steady-state simulations have been performed, and the flow has been considered incompressible. Calculations have been performed with 3D finite-volume method
Mojtaba Kazemi Kelishami, Esmail Lakzian
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