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RISThe Discrete Green's Function for Convective Heat Transfer—Part 1: Definition and Physical Understanding
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The discrete Green's function (DGF) is a superposition-based descriptor of the relationship between the surface temperature and the convective heat transfer from a surface. The surface is discretized into a finite number ...
The Discrete Green's Function for Convective Heat Transfer—Part 2: Semi-Analytical Estimates of Boundary Layer Discrete Green's Function
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This is the second paper in a set that defines the discrete Green's function (DGF). This paper focuses first on the turbulent boundary layer and presents two different methods to estimate the DGF. The long-element formulation ...
Heat Transfer Coefficient Measurements on the Film Cooled Pressure Surface of a Transonic Airfoil
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents isoenergetic temperature and steadystate filmcooled heat transfer coefficient measurements on the pressure surface of a modern, highly cambered transonic airfoil. A single passage model simulated the ...
Near Wall Modeling for Trailing Edge Slot Film Cooling
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Trailing edge slot film cooling is a widely used active cooling scheme for turbine blade trailing edges. Current ReynoldsAveraged Navier–Stokes (RANS) models are known to significantly overpredict the adiabatic effectiveness ...
Conjugate Heat Transfer Analysis Using the Discrete Green's Function
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Conjugate heat transfer problems generally require a coupled solution of the temperature fields in the fluid and solid domains. Implementing the boundary condition at the surface of the solid using a discrete Green's ...
Generalization of Machine-Learned Turbulent Heat Flux Models Applied to Film Cooling Flows
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The design of film cooling systems relies heavily on Reynolds-averaged Navier–Stokes (RANS) simulations, which solve for mean quantities and model all turbulent scales. Most turbulent heat flux models, which are based on ...
Experimental Analysis of a Particle Separator Design With Full-Field Three-Dimensional Measurements
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Particle ingestion into turbine engines can cause significant damage through deposition in internal cooling passages. Musgrove et al. proposed a compact particle separator installed between the combustor bypass exit and ...
Experimental Based Redesigns for Trailing Edge Film Cooling of Gas Turbine Blades
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Magnetic resonance imaging experiments have provided the threedimensional mean concentration and three component mean velocity field for a typical trailing edge filmcooling cutback geometry built into a conventional ...
The Effect of Land Taper Angle on Trailing Edge Slot Film Cooling
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Trailing edge slot film cooling is a widely used method of protecting the thin trailing edge of turbine blades from hot gas impingement. The structures that separate the slots, known as “lands,†come in a variety of ...
Film Cooling Effectiveness Improvements Using a Nondiffusing Oval Hole
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The need for improvements in film cooling effectiveness over traditional cylindrical film cooling holes has led to varied shaped hole and sister hole designs of increasing complexity. This paper presents a simpler shaped ...