Journal of Turbomachinery: Recent submissions
Now showing items 21-40 of 4350
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An Unsteady Deposition Model for Evaluating CMAS Nonuniform Deposition Behavior and Aerodynamic Performance Degradation Under Hot Streak Clocking Effect
(The American Society of Mechanical Engineers (ASME), 2025)An unsteady model has been developed for evaluating deposition behavior and aerodynamic performance degradation under the impact of hot streak. The results reveal that hot streak alters the force exerted by the mainstream, ... -
High-Speed Rotating High-Pressure Turbine Blade Thermal Imaging of a Full-Scale Cooled 1 + 1/2 Stage Turbine in a Short Duration Transient Test Facility
(The American Society of Mechanical Engineers (ASME), 2025)This article presents results from the original development of a long wavelength infrared (LWIR) high-pressure turbine (HPT) blade thermal imaging system on a Full-Scale Cooled 1 + 1/2 Stage Rotating Turbine in the Air ... -
Large Eddy Simulations of a High-Speed Low-Pressure Turbine Cascade at Subsonic and Transonic Mach Numbers
(The American Society of Mechanical Engineers (ASME), 2025)High-speed low-pressure turbines (HS-LPTs) are one key turbomachinery component in ultra-high bypass ratio geared turbofan engines. The HS-LPT typically operates at transonic exit Mach numbers and low-Reynolds numbers. ... -
Aerodynamic Performance Prediction for Wide-Incidence Turbines Using Graph Neural Network Models Driven by Small-Scale Experimental Data
(The American Society of Mechanical Engineers (ASME), 2024)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 ... -
Analysis of Complex Total Pressure Distortion Screens Using One-Dimensional Loss Data
(The American Society of Mechanical Engineers (ASME), 2025)Producing a screen for use in generating an accurate, complex total pressure distortion involves solving two distinct problems. First, the basic loss characteristics of wire mesh screens must be established. Second, the ... -
Nature of Transonic Compressor Flow and Its 3D Design Implications
(The American Society of Mechanical Engineers (ASME), 2025)A key problem in transonic compressor and fan design is that although a 3D description of the flow is necessary to correctly capture the shock, accounting for it during the sectional design is difficult because the key ... -
Impact of Trailing Edge Damage on Nozzle Guide Vane Aerodynamic Performance
(The American Society of Mechanical Engineers (ASME), 2025)In this paper, we consider the impact of trailing edge burn-back on the aerodynamic performance of cooled transonic high-pressure nozzle guide vanes. We consider four levels of burn-back ranging from new parts to severely ... -
Conjugate Study of Aerothermodynamics of Internal Ridged-Wall Enhanced Swirl-Film Cooling for Gas Turbine Blade Leading Edge
(The American Society of Mechanical Engineers (ASME), 2025)This article introduces a high-performance swirl-film conjugate cooling scheme with the novel ridged wall for the leading edge of a gas turbine blade and presents a numerical study of the aerothermal characteristics of the ... -
A Novel Design Concept for Highly-Loaded Compressor Airfoils
(The American Society of Mechanical Engineers (ASME), 2025)Compressor blade design has always faced the challenge of meeting the performance requirements of the compressor while keeping losses to a minimum. Over the past decades, a number of different airfoil types have been ... -
Effect of Geometry and Heat Flux on Turbine Over-Tip Flow Power Extraction
(The American Society of Mechanical Engineers (ASME), 2025)The tip leakage flow is known to be a substantial loss contributor. A precise local loss decomposition of the relevant laminar and turbulent terms for viscous losses and thermal losses is required to predict the impact of ... -
Influence of Parametric Modeling of Tip Winglets on the Stable Operating Margin of the Stage 37 Compressor
(The American Society of Mechanical Engineers (ASME), 2025)In this study, a novel tip winglet structure was proposed and applied to NASA Stage 37, aiming to regulate leakage flow at the rotor tip while reducing additional weight caused by installing tip winglets. A parametric ... -
Revisiting Dimensionless Parameters Quantifying Film Cooling
(The American Society of Mechanical Engineers (ASME), 2025)The adiabatic effectiveness of film cooling (η) has been characterized by the density (DRh) and blowing (BRh) ratios. In this study, dimensional analysis and computations based on Reynolds-averaged Navier–Stokes (RANS) ... -
A Review of Secondary Combustion on the Turbine Blade Cooling
(The American Society of Mechanical Engineers (ASME), 2025)The gas turbine engine is the powerhouse of most large modern military and civil aircraft. These engines operate at temperatures above the melting point of the materials that the combustor and turbine components are made ... -
Data Assimilation of Transitional and Separated Turbomachinery Flows With Physics-Informed Neural Networks
(The American Society of Mechanical Engineers (ASME), 2025)Despite the demonstrated utility of Reynolds-averaged Navier–Stokes (RANS) calculations for many industrially relevant problems, the method yields unsatisfactory representations of many flows of engineering interest, such ... -
Compressor Blade Shaping and Optimization Through Design Features Based on Free-Form Deformation
(The American Society of Mechanical Engineers (ASME), 2025)- -
Windage Torque and Flow Characteristics of a Co-Rotating Conical Cavity Under Radial Inflow
(The American Society of Mechanical Engineers (ASME), 2025)The compressor disk cavity is a critical component of the secondary air system, and its design significantly influences the overall performance of an aero-engine. A static testing technique for dynamic torque measurement ... -
Experimental Study on the High Relative Casing Motion Effect on Turbine Blade Tip Aerodynamic Characteristics
(The American Society of Mechanical Engineers (ASME), 2025)The high-speed relative motion between the casing and turbine blade tip significantly complicates the flow field distribution near the blade tip and greatly increases the difficulty of flow field measurement. In this paper, ... -
Numerical Simulations of Ice Particle Transport at Representative Turbofan Compressor Conditions
(The American Society of Mechanical Engineers (ASME), 2025)Engine icing threatens compressor operation and service life. Ice crystal ingestion at cruise and descent flight phases results in smaller, partially melted crystals entering the engine core. Here, crystals stick to ... -
Effect of Blade Damage on Low Pressure Ratio Fan Windmill Aerodynamics
(The American Society of Mechanical Engineers (ASME), 2025)Fan windmill occurs when power to a turbofan is cut during flight and the airflow through the engine causes the fan to freewheel, often following fan damage. The fan rotational speed and drag during windmill determine the ... -
Heat Transfer and Flow Field Characteristics of Variable Aspect Ratio, Serpentine Passages
(The American Society of Mechanical Engineers (ASME), 2025)This study investigates the effect of acceleration and deceleration in the turn region of a two-pass, serpentine channel. Channel aspect ratios of 2:1 and 4:1 are considered in three combinations to investigate the effect ...