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RISAerothermal Effect of Cavity Welding Beads on a Transonic Squealer Tip
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: High-pressure turbine blade tips are critical for gas turbine performance and are sensitive to small geometric variations. For this reason, it is increasingly important for experiments and simulations to consider real ...
An Experimentally Validated Low-Order Model of the Thermal Response of Double-Wall Effusion Cooling Systems for High-Pressure Turbine Blades
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Transpiration cooling represents the pinnacle of turbine cooling and is characterized by an intrinsic material porosity which achieves high internal convective cooling, and full coverage cooling films on the external surface ...
Coolant Jets Blowing Across the Airfoil Stagnation Line to Enhance Film Effectiveness
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A novel airfoil leading edge film cooling design has been investigated, and its performance over conventional alternatives quantified. In conventional designs, the region near the geometric stagnation line is typically ...
Measurement of Antenna Patterns for Oceanographic Radars Using Aerial Drones
Publisher: American Meteorological Society
Abstract: new method is described employing small drone aircraft for antenna pattern measurements (APMs) of high-frequency (HF) oceanographic radars used for observing ocean surface currents. Previous studies have shown that accurate ...
Development of a Steady-State Experimental Facility for the Analysis of Double-Wall Effusion Cooling Geometries
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The continuous drive for ever higher turbine entry temperatures is leading to considerable interest in high performance cooling systems which offer high cooling effectiveness with low coolant utilization. The double-wall ...
The Effects of Combustor Cooling Features on Nozzle Guide Vane Film Cooling Experiments
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Recent advances in experimental methods have allowed researchers to study nozzle guide vane (NGV) film cooling in the presence of combustor dilution ports and endwall films. The dilution injection creates nonuniformities ...
A Three-Dimensional Conjugate Approach for Analyzing a Double-Walled Effusion-Cooled Turbine Blade
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A double-wall cooling scheme combined with effusion cooling offers a practical approximation to transpiration cooling which in turn presents the potential for very high cooling effectiveness. The use of the conventional ...
An Experimental Investigation of Adiabatic Film Cooling Effectiveness and Heat Transfer Coefficient on a Transonic Squealer Tip
Publisher: American Society of Mechanical Engineers (ASME)
Abstract: The effect of film cooling on a transonic squealer tip has been examined in a high speed linear cascade, which operates at engine-realistic Mach and Reynolds numbers. Tests have been performed on two uncooled tip geometries ...
Experimental and Computational Methods for the Evaluation of Double-Wall, Effusion Cooling Systems
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Further improvements in gas turbine efficiency can be sought through more advanced cooling systems—such as the double-wall, effusion system—which provide high cooling effectiveness with low coolant utilization. The double-wall ...