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RISEffects of Winglet Geometry on the Aerodynamic Performance of Tip Leakage Flow in a Turbine Cascade
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Experimental and numerical methods were used to investigate the aerodynamic performance of a winglet tip in a linear cascade. A flat tip and a cavity tip were studied as baseline cases. The flow patterns over the three ...
The Aerothermal Performance of a Cooled Winglet Tip in a High Pressure Turbine Cascade
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The aerothermal performance of a winglet tip with cooling holes on the tip and on the blade surface near the tip is reported in this paper. The investigation was based on a high pressure turbine cascade. Experimental and ...
Aeromechanical Optimization of a Winglet Squealer Tip for an Axial Turbine
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The possibility of reducing the over tip leakage loss of unshrouded axial turbine rotors has been investigated in an experiment using a linear cascade of turbine blades and by using CFD. A numerical optimization of a ...
An Aerodynamic Investigation of a High-Pressure Turbine Using Rotor Casing Static Pressure Measurements at Engine Representative Conditions With Different Tip Designs, Tip Gaps, and Inlet Temperature Profiles
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A rotating high-pressure (HP) turbine, in modern aircraft engines, is subjected to high cyclic thermal and mechanical loads. Shroudless turbines experience high heat loads on the rotor tip and casing, which makes them one ...
Effect of a Combined Hot-Streak and Swirl Profile on Cooled 1.5-Stage Turbine Aerodynamics: An Experimental and Computational Study
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Recently developed lean-burn combustors offer reduced NOx emissions for gas turbines. The flow at exit of lean-burn combustors is dominated by hot streaks and residual swirl, which have been shown—individually—to impact ...