Journal of Turbomachinery: Recent submissions
Now showing items 21-40 of 4312
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Flow and Heat Transfer in a Rotating Disc Cavity With Axial Throughflow at High-Speed Conditions
(The American Society of Mechanical Engineers (ASME), 2025)Flow and heat transfer in a compressor rotating disc cavity with axial throughflow is investigated using wall-modeled large-eddy simulations (WMLES). These are compared to measurements from recently published experiments ... -
The Unsteady Shock–Boundary Layer Interaction in a Compressor Cascade—Part II: High-Fidelity Simulation
(The American Society of Mechanical Engineers (ASME), 2025)In the second part of this three-paper series, high-fidelity simulations of the transonic cascade TEAMAero at the aerodynamic design point with Rein=1.35×106 and Main=1.21 are presented. A high-order discontinuous Galerkin ... -
Efficient Aerodynamic Uncertainty Quantification for a Three-Dimensional Transonic Fan Rotor
(The American Society of Mechanical Engineers (ASME), 2025)Manufactured compressor blades deviate from their intended design, leading to a shift in the mean and scattering of aerodynamic performance. To mitigate performance deterioration without increasing manufacturing costs, an ... -
Numerical Assessment of an Aerodynamic Probe to Enable Short Focal Length Laser Diagnostics in High Temperature Supersonic Flows Based on Flow Disturbance
(The American Society of Mechanical Engineers (ASME), 2025)This article evaluates the use of an actively cooled aerodynamic probe body with integrated optics to perform short focal length laser diagnostics within high-temperature, high-supersonic flows. A novel probe with a “ship's ... -
Experimental and Numerical Comparison of Two Turbine Vane Frame Designs
(The American Society of Mechanical Engineers (ASME), 2025)This paper presents an experimental study supported by numerical simulations of the performance of two turbine vane frames (TVFs) at various purge and TVF inlet swirl conditions representing both on- and off-design operations. ... -
Roughness Investigations on In-Service High-Pressure Compressor Blades—Part II: Roughness Parameterization and Computational Fluid Dynamics-Based Modeling of Its Impact on Turbulent Flows
(The American Society of Mechanical Engineers (ASME), 2025)The two-part publication deals with roughness investigations on in-service high-pressure compressor (HPC) blades, both in terms of measurements and simulations. In this paper (Part II), first, stripe measurements of surface ... -
Prediction of Steady and Unsteady Flow Quantities Using Multiscale Graph Neural Networks
(The American Society of Mechanical Engineers (ASME), 2024)Analysis, optimization, and uncertainty quantification of the aerodynamic behavior of turbomachinery components is a fundamental part of the current industrial design process and requires the extensive use of compute-intensive ... -
Application of Machine Learning Techniques in Calibration and Data Reduction of Multihole Probes
(The American Society of Mechanical Engineers (ASME), 2024)This work presents procedures for implementing machine learning methods into existing algorithms for multihole probe calibration and data reduction. It demonstrates that using artificial neural networks (ANNs) can decrease ... -
A Physics-Informed Neural Network for Solving the Inverse Heat Transfer Problem in Gas Turbine Rotating Cavities
(The American Society of Mechanical Engineers (ASME), 2024)Recently, physics-informed neural networks (PINNs) have displayed great potential in delivering swift and accurate solutions for inverse problems. Here, a PINN was used to solve the inverse heat conduction problem in the ... -
Numerical Investigation on the Influence of Wet Compression Aerodynamic Performance of Multi-Stage Transonic Compressor
(The American Society of Mechanical Engineers (ASME), 2024)In this paper, the gas–liquid two-phase flow in a multi-stage transonic compressor is numerically simulated based on the Euler–Lagrange method. The changes in wet compression aerodynamic characteristics of the compressor ... -
Understanding the Flow Field in a Highly Loaded Tandem Compressor Cascade
(The American Society of Mechanical Engineers (ASME), 2024)Large flow turning in compressor cascades with single airfoils requires effective control of the boundary layer growth under the diffusing flow. An alternative approach consists of distributing the loading over two subsequent ... -
Effect of Ceramic Matrix Composites on the Thermal Efficiency of a Power Generation Turbine
(The American Society of Mechanical Engineers (ASME), 2024)Ceramic matrix composites (CMCs) offer higher allowable temperatures and reduced weight, making them an attractive prospect for parts in the hot section of a gas turbine engine. As CMCs are increasingly adapted into aero ... -
Noise Source Identification for the Unsteady Low-Pressure Turbine Flow Fields
(The American Society of Mechanical Engineers (ASME), 2024)The article presents a data processing methodology to identify the noise sources in low-pressure turbine (LPT) stages and their relative importance. Scale adaptive simulation (SAS) has been carried out on a geometry ... -
Unique High-Resolution Temperature Mapping of Stage 1 Turbine Vane in a Long-Term Engine Test
(The American Society of Mechanical Engineers (ASME), 2024)In this study, surface temperature maps resulting from a long-term engine test were evaluated on a stage 1 turbine vane using thermal history coatings (THCs). THCs are ceramic-type sensor coatings doped with a lanthanide ... -
Unsteady Flow Structure of Rotating Instability in a 1.5-Stage Axial Compressor
(The American Society of Mechanical Engineers (ASME), 2024)The unsteady flow structure of the rotating instability (RI) in a 1.5-stage axial compressor is investigated through experimental and numerical analyses. In the tested compressor, the total pressure rise of the rotor ... -
Large Eddy Simulation Analysis of Loss Anomaly of a Turbine Blade With Large Trailing Edge Radius
(The American Society of Mechanical Engineers (ASME), 2024)There is great interest in the usage of ceramic matrix composites (CMC) as a turbine blade material. However, depending on the manufacturing process of the CMC, blades may have a thicker trailing edge. The design space ... -
An Experimental Study on the Effects of Nonuniform Vane Spacing on Forced Response Reduction in a Mistuned Rotor Blisk in a Multistage Axial Compressor
(The American Society of Mechanical Engineers (ASME), 2024)Stators with nonuniform vane spacing (NUVS) are known to effectively reduce the forced response of adjacent rotors by spreading the primary engine order (EO) excitation at a certain speed to a series of weaker excitations ... -
Optimized Casing Treatment to Improve Stall Margin Under Circumferential Pressure Distortion in a High-Speed Axial Flow Fan
(The American Society of Mechanical Engineers (ASME), 2024)An optimized axial slot casing treatment (OPCT) was designed that experimentally improves the stall margin by 7.31% with an efficiency gain of 1.94% at a design speed of 100% in a high-speed axial flow fan. Subsequently, ... -
The Effect of Unsteady Inlet Boundary Conditions on the Aero-Thermal Behavior of High-Pressure Turbine Vanes – A Numerical Study Using Scale-Resolving Simulations
(The American Society of Mechanical Engineers (ASME), 2024)This paper presents the application of a novel method to prescribe unsteady boundary conditions to transient, scale-resolving computational fluid dynamics simulations of the high-pressure turbine in modern jet engines. The ... -
Development of Compact and Hermetic Organic Rankine Cycle Turbine Generator With Upgraded Cooling Capability
(The American Society of Mechanical Engineers (ASME), 2025)In this article, a hermetic and oil-free turbine generator for a cryogenic organic Rankine circle (ORC) is suggested and investigated. The generator mainly consists of a high-speed generator, a two-stage supersonic turbine, ...