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RISNear 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 ...
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 ...
Uncertainty Analysis and Data-Driven Model Advances for a Jet-in-Crossflow
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: For film cooling of combustor linings and turbine blades, it is critical to be able to accurately model jets-in-crossflow. Current Reynolds-averaged Navier–Stokes (RANS) models often give unsatisfactory predictions in these ...
Analysis of Turbulent Scalar Flux Models for a Discrete Hole Film Cooling Flow
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Algebraic closures for the turbulent scalar fluxes were evaluated for a discrete hole film cooling geometry using the results from a highfidelity large eddy simulation (LES). Several models for the turbulent scalar fluxes ...
Optimal Turbulent Schmidt Number for RANS Modeling of Trailing Edge Slot Film Cooling
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: It has been previously demonstrated that Reynoldsaveraged Navier–Stokes (RANS) simulations do not accurately capture the mixing between the coolant flow and the main flow in trailing edge slot film cooling configurations. ...
Physical Interpretation of Machine Learning Models Applied to Film Cooling Flows
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Current turbulent heat flux models fail to predict accurate temperature distributions in film cooling flows. The present paper focuses on a machine learning (ML) approach to this problem, in which the gradient diffusion ...
Three Dimensional Velocity and Scalar Field Measurements of an Airfoil Trailing Edge With Slot Film Cooling: The Effect of an Internal Structure in the Slot
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Measurements of the 3D velocity and concentration fields were obtained using magnetic resonance imaging for a pressureside cutback film cooling experiment. The cutback geometry consisted of rectangular slots separated by ...
A Machine Learning Approach for Determining the Turbulent Diffusivity in Film Cooling Flows
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In film cooling flows, it is important to know the temperature distribution resulting from the interaction between a hot main flow and a cooler jet. However, current Reynolds-averaged Navier–Stokes (RANS) models yield poor ...
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 ...