Journal of Turbomachinery: Recent submissions
Now showing items 221-240 of 4519
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Insights Into Turbocharger Centrifugal Compressor Stability Using High-Fidelity Computational Fluid Dynamics and a Novel Impeller Diffusion Factor
(The American Society of Mechanical Engineers (ASME), 2024)Turbocharger technologies are widely applied in the modern automotive industry to meet increasingly stringent carbon emission standards. To support the continuous enhancement of these tactics, delivering improvement to the ... -
Advanced Design of a Transition Duct for Supersonic Inlet Turbines in Rotating Detonation Engines
(The American Society of Mechanical Engineers (ASME), 2024)A supersonic inlet turbine can extract substantial energy from the highly fluctuating and transonic flow delivered by a rotating detonation combustor (RDC). However, a transition duct is necessary to achieve the supersonic ... -
Impact of Blowing and Density Ratio on the Film Cooling and Heat Transfer in an Aggressive Turbine Center Frame
(The American Society of Mechanical Engineers (ASME), 2024)It was shown in the previous study that the aft purge flows from the last stage of the high-pressure turbine (HPT) have a significant film cooling potential in the downstream turbine center frame (TCF) (Jagerhofer et al., ... -
Scaling Heat Transfer and Pressure Losses of Novel Additively Manufactured Rib Designs
(The American Society of Mechanical Engineers (ASME), 2024)Rib turbulators are a key cooling feature that enables increased heat transfer on the interior of gas turbine components. As metal additive manufacturing becomes available for developing turbine parts, it is becoming ... -
Investigating the Unsteady Dynamics of a Multi-Jet Impingement Cooling Flow Using Large Eddy Simulation
(The American Society of Mechanical Engineers (ASME), 2024)We investigate the unsteady behavior of an in-line jet impingement array of nine jets at a Reynolds number of 10,000 in a narrow channel subjected to a developing cross flow of up to 25% of the bulk jet velocity. To this ... -
Data-Driven Radial Compressor Design Space Mapping
(The American Society of Mechanical Engineers (ASME), 2024)Estimates of turbomachinery performance trends inform system-level compromises during preliminary design. Existing empirical correlations for efficiency use limited experimental data, while analytical loss models require ... -
Using Pseudotime Marching for the Solution of Harmonic Balance Problems
(The American Society of Mechanical Engineers (ASME), 2025)The aim of this paper is to study approaches to implement implicit pseudotime marching for the harmonic balance system in the frequency domain. We first give a motivation for using pseudotime marching as a solution technique. ... -
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 ...