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RISEvaluation of CFD Predictions Using Thermal Field Measurements on a Simulated Film Cooled Turbine Blade Leading Edge
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Computational fluid dynamics (CFD) predictions of film cooling performance for gas turbine airfoils are an important part of the design process for turbine cooling. Typically, industry relies on the approach based on ...
Experimental Simulation of Contaminant Deposition on a Film Cooled Turbine Vane Pressure Side With a Trench
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An important issue in the use of coalor biomassderived synthetic gaseous (syngas) fuels is the deposition of contaminants on filmcooled turbine surfaces, which alter cooling and aerodynamic performance and increase material ...
Measurements of Adiabatic Film and Overall Cooling Effectiveness on a Turbine Vane Pressure Side With a Trench
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Film cooling performance is typically quantified by separating the external convective heat transfer from the other components of the conjugate heat transfer that occurs in turbine airfoils. However, it is also valuable ...
Experimental Thermal Field Measurements of Film Cooling Above the Suction Surface of a Turbine Vane
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Twodimensional thermal profiles were experimentally measured downstream of a single row of film cooling holes on both an adiabatic and a matched Biot number model turbine vane. The measurements were taken as a comparison ...
Adiabatic Effectiveness and Thermal Field Measurements of a Shaped Hole in the Showerhead of a Model Turbine Blade
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Few published studies incorporating shaped hole designs in the leading-edge region, or showerhead, of turbine airfoils have been performed; but among them is the indication that shaped holes may offer an improvement in ...
Effects on Film Cooling Performance in the Showerhead From Geometric Parameterization of Shaped Hole Designs
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The high heat loads at the leading-edge regions of turbine vanes and blades necessitate the most robust thermal protection, typically accomplished via a dense array of film cooling holes, nicknamed the “showerhead.” Although ...
Experimental and Computational Investigation of Shaped Film Cooling Holes Designed to Minimize Inlet Separation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Film cooling is used to protect turbine components from the extreme temperatures by ejecting coolant through arrays of holes to create an air buffer from the hot combustion gases. Limitations in traditional machining meant ...
Considerations for Compressible Film Cooling: A Computational Study of the Effects of Transonic Flows and Varying Mainstream Mach Number
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Recent evidence suggests that film cooling flows with engine-realistic mainstream Mach number have declined performance in comparison to those with conventional low-speed laboratory conditions. Consideration and understanding ...
Overall Cooling Effectiveness With Internal Serpentine Channels and Optimized Film Cooling Holes
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The overall cooling effectiveness for gas turbine airfoils is a function of the combined cooling due to internal cooling configurations and film cooling configurations. Typically, film cooling configurations are evaluated ...
Realistic Trench Film Cooling With a Thermal Barrier Coating and Deposition
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Thermal barrier coatings (TBC) see extensive use in hightemperature gas turbines. However, little work has been done to experimentally characterize the combination of TBC and film cooling. The purpose of this study is to ...