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Showing 1 to 10 of 10 for “"High-Turning"”.
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Experimental and Numerical Investigations of Optimized High-Turning Supercritical Compressor Blades
Cascade testing and flow analysis of three high-turning supercritical compressor blades were conducted. The blades were designed at an inlet Mach number (M1) of 0.87 and inlet flow angle of 48.4 deg, with high camber angles of about 55 deg. The baseline blade was a conventional Controlled Diffusion …
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Aerodynamic Performance of High Turning Airfoils and the Effect of Endwall Contouring on Turbine Performance
… layer thickness as well as the overall flow turning angle through the blade row. Secondary flows result in stagnation pressure loss which accounts for a considerable portion of the total stagnation pressure loss occurring in a turbine passage. A turbine designer strives to minimize these …
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Development of a robust numerical optimization methodology for turbine endwalls and effect of endwall contouring on turbine passage performance
… aerodynamics performance of a turbine passage at high exit Mach numbers have been published. There is, however, no study available in the open literature for a very high turning blade with a transonic design exit Mach number and the effect of endwall contouring on the heat transfer performance of …
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The Influence of Pressure Ratio on Film Cooling Performance of a Turbine Blade
… of a typical General Electric first stage, high turning, turbine blade. Tunnel freestream conditions were 10 psig total pressure and approximately 80 °C. A chilled air coolant film was supplied to a generic General Electric leading edge showerhead coolant scheme. Pressure ratios were varied …
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Aerodynamic performance of a transonic turbine blade passage in presence of upstream slot and mateface gap with endwall contouring
… aerodynamic loss coefficient measurements for a high turning, contoured endwall passage under transonic operating conditions in presence of upstream purge slot and mateface gap. The upstream purge slot represents the gap between stator-rotor interface and the mateface gap simulates the assembly …
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Aerodynamics of Endwall Contouring with Discrete Holes and an Upstream Purge Slot Under Transonic Conditions with and without Blowing
… discrete holes and an upstream purge slot for a high turning (127") airfoil passage under transonic conditions are investigated. The total pressure loss and secondary flow field were measured for two endwall geometries. The non-axisymmetric endwall was developed through an optimization study [1] …
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Aerodynamic Performance of a Flow Controlled Compressor Stator Using an Imbedded Ejector Pump
A high-turning compressor stator with a unique flow control design was developed and tested. Both boundary layer suction and trailing edge blowing developed from a single supplied motive pressure source are employed on the stator. Massflow removed through boundary layer suction is added to the …
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Steady and Unsteady Heat Transfer in a Film Cooled Transonic Turbine Cascade
… blade geometry is a generic version of a modern high turning rotor blade with transonic exit conditions. The blade is equipped with a showerhead film cooling scheme. Heat flux, surface pressure and surface temperature are measured at six locations on the suction side of the central blade. …
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Dynamics of three-phase systems: Bubbles, droplets and their interactions with surfaces
… a system which permits continuous locally high heat fluxes of up to 250 W/cm2 while still maintaining single bubble boiling. With this, a new spectra of bubbles has been measured, beginning with the classical picture of a bubble growing and gradually pinching off, but many more modes have …
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Effects of High Intensity, Large-Scale Freestream Combustor Turbulence On Heat Transfer in Transonic Turbine Blades
… cascade. Measurements were performed on a high turning, transonic turbine blade. The facility is capable of heated flow with inlet total temperature of 120C and inlet total pressure of 10 psig. The Reynolds number based on blade chord and exit conditions (5x106) and the inlet and exit Mach …