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RISEffects of Double-Side Labyrinth Seals on Aerodynamic Performance in a Transonic Shrouded Turbine Stage
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Labyrinth seals on both rotor casing and blade tip as an effective method to control the leakage flowrate of the shroud and improve aerodynamic performances in a transonic turbine stage are investigated in this study. ...
Direct and Inverse Model for Single-Hole Film Cooling With Machine Learning
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The direct prediction model for adiabatic film cooling effectiveness distribution and inverse prediction model for design parameters are studied in this article. Convolutional neural networks (CNNs) are trained on a set ...
Experimental and Numerical Investigation of High Load Turbine Blade Tip Cavity Structures
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Leakage flow loss is an important factor affecting the aerodynamic efficiency of turbines. In this paper, experimental and numerical computational studies were used to investigate three different tips of a highly loaded ...
Effects of Reynolds Number and Tooth Front Angle on Leakage Loss and Heat Transfer Characteristics in a Rotating Labyrinth Seal
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The labyrinth seal is effective in reducing leakage losses at the rotor blade top in the turbine. This study investigates the variation in labyrinth seal performance at different rotational speeds, different Reynolds ...
Aerodynamic Performance Prediction for Wide-Incidence Turbines Using Graph Neural Network Models Driven by Small-Scale Experimental Data
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: To rapidly and accurately predict turbine rotor blade losses within a wide range of incidences (−50–30 deg), graph neural networks (GNNs) are utilized to predict the aerodynamic parameters of two-dimensional turbine blades ...
Heat Transfer Characteristics in a Rotating Pin Finned Duct With Different Protrusion Locations
Publisher: American Society of Mechanical Engineers (ASME)
Abstract: The heat transfer in a pin finned duct is augmented by the protrusion in this study. The realizable k–ε turbulence model coupled with the enhanced wall function is used to obtain the flow structure and heat transfer ...
Film Cooling in the Cutback for Trailing Edge With Different Incident Angles
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The cutback film cooling was important to decrease the trailing edge temperature and prolong the working life of gas turbines. Many investigations concerning cutback film cooling have already been done. However, only a few ...
On the Aero-Thermal Performance of Rim Film Cooling in the Squealer Tip of a Linear Turbine Cascade
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The present study proposes a novel rim film cooling design, motivated by the fact that the suction-side rim and the cavity floor near the leading edge of a conventional squealer tip with a camber-line film hole array are ...
Endwall Contouring for Improving Aerodynamic Performance in a High-Pressure Turbine Cascade
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The endwall contouring has proven to be an effective technique in controlling the impacts of secondary flow within turbomachinery. A baseline cascade with the original axisymmetric endwall (BASE) has been redesigned with ...
Enhancing Aerodynamic Performance of a Non-Axisymmetric Endwall Contoured Cascade Through Section Profiling Method
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Endwall contouring and 3D blade configurations are effective techniques for enhancing turbomachinery performance. The integration of these technologies is an important area of investigation. To continue the numerical and ...