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RISFluctuating Thermal Field in the Near-Hole Region for Film Cooling Flows
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The film cooling flow field is the result of a highly complex interaction between the film cooling jets and the mainstream. Understanding this interaction is important in order to explain the ...
Adiabatic Effectiveness, Thermal Fields, and Velocity Fields for Film Cooling With Large Angle Injection
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The film cooling performance and velocity field were investigated for discrete round holes inclined at an injection angle of 55 deg. Results are compared to typical round film cooling holes, ...
Effects of Very High Free-Stream Turbulence on the Jet–Mainstream Interaction in a Film Cooling Flow
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Dispersion of coolant jets in a film cooling flow field is the result of a highly complex interaction between the film cooling jets and the mainstream. Understanding this complex interaction, ...
Enhanced Heat Transfer and Shear Stress Due to High Free-Stream Turbulence
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Surface heat transfer and skin friction enhancements, as a result of free-stream turbulence levels between 10 percent < Tu > 20 percent, have been measured and compared in terms of ...
High Freestream Turbulence Effects on Turbulent Boundary Layers
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: High freestream turbulence levels significantly alter the characteristics of turbulent boundary layers. Numerous studies have been conducted with freestreams having turbulence levels of 7 percent ...
Characterization and Laboratory Simulation of Turbine Airfoil Surface Roughness and Associated Heat Transfer
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The physical characteristics of surface roughness observed on first-stage high-pressure turbine vanes that had been in service for a long period were investigated in this study. Profilometry ...
Film Cooling With Compound Angle Holes: Heat Transfer
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Heat transfer coefficients have been measured for film cooling injection from a single row of holes laterally directed with a compound angle of 60 deg. Two hole configurations were tested, ...
Film Cooling With Compound Angle Holes: Adiabatic Effectiveness
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Film cooling effectiveness was studied experimentally in a flat plate test facility with zero pressure gradient using a single row of inclined holes, which injected high-density, cryogenically ...
Hydrodynamic Measurements of Jets in Crossflow for Gas Turbine Film Cooling Applications
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents the results of a detailed hydrodynamic study of a row of inclined jets issuing into a crossflow. Laser-Doppler anemometry was used to measure the vertical and streamwise ...
Effects of Density Ratio on the Hydrodynamics of Film Cooling
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents the results of a detailed hydrodynamic study of a row of inclined jets issuing into a crossflow with a density ratio of injectant to free stream of 2. Laser-Doppler ...