Journal of Turbomachinery: Recent submissions
Now showing items 161-180 of 4519
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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 ... -
Control of Three-Dimensional Corner Separation Flow in a Highly Loaded Compressor Cascade via Dynamic Surface Deformation
(The American Society of Mechanical Engineers (ASME), 2025)When the Reynolds (Re) number decreases below the critical value, the intensified turbulent mixing in the corner region rapidly deteriorates the performance of compressors, including efficiency and stability. However, ... -
The Impact of Manufacturing Variations on the Aerothermal Performance of High-Pressure Turbine Blade Shrouds
(The American Society of Mechanical Engineers (ASME), 2025)High-pressure turbine blade (HPTB) shrouds suffer manufacturing variations in both platform alignment and inter-platform gap width. Compared to hub endwalls, the aerothermal effects of shroud platform steps and gaps has ... -
Multistage Turbomachinery Optimization for High-Temperature Heat Pumps With the Reverse Rankine Cycle
(The American Society of Mechanical Engineers (ASME), 2025)The electrification of process heat generation will be a key to achieving carbon neutrality in the coming decades. One of the most promising approaches is to replace conventional heat supply systems with high-temperature ... -
Application of Deep Learning for Fan Rotor Blade Performance Prediction in Turbomachinery
(The American Society of Mechanical Engineers (ASME), 2025)Turbomachinery fan optimization is a complex multidisciplinary process, which forces engineers to rely on strong theoretical assumptions and/or can be very computationally expensive. Additionally, with new constraints ... -
Unsteady Flow Development and Reynolds Stress Measurements in a Centrifugal Compressor Vaned Diffuser
(The American Society of Mechanical Engineers (ASME), 2025)Modern aeroengine designers face the challenge of reducing fuel consumption, which is pushing compressor technology into new design spaces. To optimize these design spaces, high-fidelity computational models are crucial ... -
Gradient-Free Aerodynamic Optimization With Structural Constraints and Surge Line Control for Radial Compressor Stage
(The American Society of Mechanical Engineers (ASME), 2025)The concept and design of high-temperature heat pumps (HTHP) including their components for specific temperature needs is a time-consuming and interdisciplinary task. Especially, the design of compressor geometries have a ... -
Entry Region Heat Transfer Augmentation With Pins, Fins, and Turbulators in Circular Channels
(The American Society of Mechanical Engineers (ASME), 2025)Entry region heat transfer is known to provide significantly higher heat transfer than fully developed conditions. Utilizing entry region heat transfer would provide an additional heat sink at the inlet of an aircraft ... -
Numerical Study on Unsteady Flow of a Supersonic Partial Admission Impulse Turbine
(The American Society of Mechanical Engineers (ASME), 2025)Partial admission is an essential method to ensure the effective operation of turbines in various operating conditions. The transition section of partial admission turbines is pivotal in governing the unsteadiness and ... -
Superposition of Overall Cooling Effectiveness on a Turbine Blade Leading Edge
(The American Society of Mechanical Engineers (ASME), 2025)Increasingly harsh turbine environments necessitate the design of more advanced cooling techniques as well as the prediction of those cooling schemes' performance at engine conditions. For several decades, film cooling ... -
Hybrid RANS-LES Simulation of Rotor–Stator Interaction in a Compressor Stage Using a Grid-Adaptive Simulation Method
(The American Society of Mechanical Engineers (ASME), 2024)Flows in compressors are extremely complex with various scales. Small-scale turbulence, middle-scale rotor–stator interaction (RSI), large-scale corner separation, and tip leakage flow should all be considered in the ... -
Direct and Refined Characterization of Rebound for Irregularly Shaped, High-Speed Particles Incident on Aerospace Grade Titanium
(The American Society of Mechanical Engineers (ASME), 2024)The observed stochasticity in rebounding trajectories for particle-surface interactions in turbomachinery is often attributed to irregularities in particle shape. However, at higher speeds, plastic deformation of the surface ...