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RISPredicting High Lift Low Pressure Turbine Cascades Flow Using Transition Sensitive Turbulence Closures
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper discusses the application of different transitionsensitive turbulence closures to the prediction of lowReynoldsnumber flows in highlift cascades operating in lowpressure turbine (LPT) conditions. Different ...
Integration of Machine Learning and Computational Fluid Dynamics to Develop Turbulence Models for Improved Low-Pressure Turbine Wake Mixing Prediction
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents the development of accurate turbulence closures for low-pressure turbine (LPT) wake mixing prediction by integrating a machine-learning approach based on gene expression programming (GEP), with ...
Computational and Experimental Study of the Unsteady Convection of Entropy Waves Within a High-Pressure Turbine Stage
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This article describes the transport and the interaction of pulsating entropy waves generated by combustor burners within a high-pressure turbine stage for aeronautical application. Experiments and computational fluid ...
The Effects of Swirling Flows in Entropy Wave Convection Through High-Pressure Turbine Stage
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: First stages of aeronautical high-pressure turbines are subjected to significant inlet distortions generated by the combustor system. These disturbances are characterized by velocity and temperature fluctuations convected ...
Improvements in the Prediction of Steady and Unsteady Transition and Mixing in Low-Pressure Turbines by Means of Machine-Learnt Closures
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this article, novel machine-learnt transition and turbulence models are applied to the prediction of boundary-layer transition and wake mixing in a low-pressure turbine (LPT) cascade, including unsteady inflow cases ...
The Impact of the Off-Design Conditions on the Entropy Wave Interaction With a High-Pressure Turbine Stage
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The study of component interactions in aeronautical engines is a key aspect to improve the aerodynamic, aeromechanical, and thermal performance and to reduce greenhouse gas and noise emissions. In this context, combustor ...
Large Eddy Simulation and RANS Analysis of the End-Wall Flow in a Linear Low-Pressure-Turbine Cascade—Part II: Loss Generation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In low-pressure turbines (LPT) at design point, around 60–70% of losses are generated in the blade boundary layers far from end walls, while the remaining 30–40% is controlled by the interaction of the blade profile with ...
Computational and Experimental Study of Hot Streak Transport Within the First Stage of a Gas Turbine
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The paper discusses the migration, the interaction with the blades, and the attenuation of hot streaks generated by combustor burners, during their propagation within the first turbine stage of aero-engines. Experiments ...
A Data-Driven Approach for Generalizing the Laminar Kinetic Energy Model for Separation and Bypass Transition in Low- and High-Pressure Turbines
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: No common laminar kinetic energy (LKE) transition model has to date been able to predict both separation-induced and bypass transition, both phenomena commonly found in low-pressure turbines and high-pressure turbines. ...