Journal of Turbomachinery: Recent submissions
Now showing items 101-120 of 4312
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Film Cooling and Thermal Performances of a Blade Tip Winglet Operated in an Annular Test Rig and a Test Gas Turbine Power Plant
(The American Society of Mechanical Engineers (ASME), 2024)This paper investigates the film cooling performances and thermal behavior of a blade tip winglet, which was initially investigated in a 1.5-stage experimental axial turbine facility and subsequently also tested in a gas ... -
RANS Capabilities for Transonic Axial Compressor: A Perspective From GPPS Computational Fluid Dynamics Workshop
(The American Society of Mechanical Engineers (ASME), 2024)Reynolds-averaged Navier–Stokes (RANS) simulations currently serve as the prevailing industrial method for simulating axial compressor flows, and this status is expected to persist in the foreseeable future. To evaluate ... -
Impact of Turbine-Strut Clocking and Turbine Outlet Swirl on the Heat Transfer and Film Cooling in an Aggressive Turbine Center Frame
(The American Society of Mechanical Engineers (ASME), 2024)This study focuses on the thermal impact of the clocking position of the high-pressure turbine (HPT) vanes with respect to the turbine center frame (TCF) struts and the thermal impact of the HPT outlet swirl. The TCF is a ... -
Study on the Influence of Volute Throat Jet on Excitation Vibration Alleviation of Radial Turbine Blade
(The American Society of Mechanical Engineers (ASME), 2024)Turbine blade fracture, resulting from high-cycle fatigue (HCF), is the most commonly observed failure mode of turbochargers. In a vaneless turbine, the radial turbine blade is susceptible to HCF under excessive aerodynamic ... -
Flow Mechanism Study on the Effect of Controllable Speed Casing With Different Axial Starting Points on Transonic Compressor Rotor Stability
(The American Society of Mechanical Engineers (ASME), 2024)The controllable speed casing represents an exploring approach to casing technology, designed to enhance the adaptability of casing in compressors under variable working conditions. This paper developed a numerical study ... -
Effects of Ribbed Crossflow Channel in a Turbine Blade on Film Cooling Performance of Diffusion Slot Holes with Various Cross Section Orientations
(The American Society of Mechanical Engineers (ASME), 2024)This paper investigates the influence of ribbed crossflow on the film cooling performance of a turbine rotor blade. A pressure-sensitive paint measurement technique was employed to measure the effectiveness of film cooling. ... -
Analysis of the Bifurcating Duct of an Inlet Particle Separator in Transonic Flow Conditions
(The American Society of Mechanical Engineers (ASME), 2024)To increase the reliability of turboprop and turboshaft engines in extreme operating conditions, filtering protections such as inlet particle separators (IPSs) can be installed at the intake. The flow inside an IPS is ... -
The Unsteady Shock-Boundary Layer Interaction in a Compressor Cascade—Part I: Measurements With Time-Resolved Particle Image Velocimetry
(The American Society of Mechanical Engineers (ASME), 2025)In the first part of this three-paper-series, time-resolved particle image velocimetry (TR-PIV) is performed in the transonic cascade to elucidate the shock-boundary layer interaction process and to provide comparative ... -
Numerical Study on the Effect of Back Cavity on the Aerodynamic Behavior of a Non-Axisymmetric Casing Treatment for Transonic Axial Compressors
(The American Society of Mechanical Engineers (ASME), 2025)For decades, aeronautic engineers have studied the potential of Casing Treatments (CT) to improve the aerodynamic operability of tip-limited compressors. Axial Slot Casing Treatment (or ASCT) has shown very good results ... -
The Unsteady Shock-Boundary Layer Interaction in a Compressor Cascade—Part III: Mechanisms of Shock Oscillation
(The American Society of Mechanical Engineers (ASME), 2025)The shock-boundary layer interaction in transonic flows is known to cause strong unsteady flow effects that negatively affect the performance and operability of blade and cascade designs. Despite decades of research on the ... -
Optimal Riblets Applied to Gas Turbine Compressor Blades Studied via Direct Numerical Simulation (GT2024–122305)
(The American Society of Mechanical Engineers (ASME), 2025)Streamwise micro-groove surfaces (“riblets”) are well known as a passive surface treatment to reduce drag, which may assist in increasing overall gas turbine efficiency. The first direct numerical simulation of micro-scaled ... -
Dirt Ingestion Impacts on Cooling Within a Double-Walled Combustor Liner
(The American Society of Mechanical Engineers (ASME), 2025)Double-walled liners consisting of impingement and effusion cooling are commonly used to cool gas turbine combustor chambers. Engine ingestion of particulates such as dirt, sand, or ash leads to particulate deposition and ... -
Roughness Effects on Dense-Gas Turbine Flow: Comparison of Experiments and Simulations
(The American Society of Mechanical Engineers (ASME), 2025)This article presents a combined numerical and experimental study of the high-subsonic organic vapor flow in a linear turbine cascade. The profile geometry is the well-documented LS59 highly loaded rotor blade and the ... -
Development of Heat Exchanger Modeling Capability for a Finite-Volume Aeroelasticity Solver
(The American Society of Mechanical Engineers (ASME), 2025)Heat exchangers are frequently used in aero-engines and are known to significantly affect the surrounding steady and unsteady flow. In certain applications, they may thereby also influence the aeroelastic stability of ... -
Advanced Methods for Assessing Flow Physics of the TU Darmstadt Compressor Stage: Uncertainty Quantification of RANS Turbulence Modeling
(The American Society of Mechanical Engineers (ASME), 2025)In this paper, we quantify the turbulence modeling uncertainty for the transonic Technische Universität Darmstadt (TUDa) compressor. The present work applies the Eigenspace Perturbation Framework (EPF) as it is the only ... -
Evaluating Thin-Film Thermocouple Performance on Additively Manufactured Turbine Airfoils
(The American Society of Mechanical Engineers (ASME), 2024)As gas turbine engine designs continue to target higher turbine entry temperatures for increased thermal efficiency, gas turbine manufacturers and operators require additional feedback from life-limited engine components. ... -
Targeting Full-Hydrogen Operation on Industrial-Scale Gas Turbines: Impact of Unconventional Fuels on Turbine Module Performance and Aeromechanics
(The American Society of Mechanical Engineers (ASME), 2024)With the trend to full decarbonization, a full-hydrogen economy development is a key industrial objective. Gas turbines, currently one of the cleanest fossil fuel-based power generation solutions, provide reliable and ... -
Flow and Heat Transfer in Rotating Compressor Cavities With Inverted Shroud-Throughflow Temperature Differences
(The American Society of Mechanical Engineers (ASME), 2024)In an aero-engine compressor, co-rotating discs form cavities that interact with an axial throughflow of secondary air at low radius. In the high-pressure (HP) compressor the shroud is hotter than the throughflow (directed ... -
Large Eddy Simulation of an Open Fan Blade at Full-Scale Reynolds Number
(The American Society of Mechanical Engineers (ASME), 2024)Large-scale commercial turbofan designs are typically evaluated early in the technology maturation phase through subscale rig tests, while evaluations at full scale can only feasibly occur much later in a given engine ... -
The Cooling Effect of Combustor Exit Louver Scheme on a Transonic Nozzle Guide Vane Endwall
(The American Society of Mechanical Engineers (ASME), 2024)The ever-increasing combustor exit temperature in modern turbine engine designs raises cooling challenges for the nozzle guide vane (NGV). Due to the complexity of NGV cooling design, the cooling effect from the upstream ...