Journal of Turbomachinery: Recent submissions
Now showing items 121-140 of 4519
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Zonal Hybrid RANS-LES Simulation of a 1.5-Stage Turbine
(The American Society of Mechanical Engineers (ASME), 2026)Abstract. This article introduces a novel method to conduct zonal hybrid RANS-large eddy simulations (LES) of turbomachinery configurations and demonstrates its application to a 1.5-stage turbine. The method extends the ... -
Fluidic Oscillators in Impingement Jet Cooling: A Novel Configuration for Realizing Sweeping Jets
(The American Society of Mechanical Engineers (ASME), 2026)Abstract. This study examines integrating fluidic oscillators into a multi-jet impingement cooling system for turbomachinery, aiming to enhance heat transfer while reducing coolant requirements. The investigated configuration ... -
A Multi-Scale Representation of Turbulence Generation in Compressor Flows
(The American Society of Mechanical Engineers (ASME), 2026)Abstract. Turbomachinery flows exhibit strong unsteadiness, characterized by periodic wake-related disturbances superimposed on background turbulence. The turbulence generation mechanisms in these flows involve multiple ... -
An Exception Algorithm to Ease Convergence in Multistage Turbomachinery Throughflow Calculations
(The American Society of Mechanical Engineers (ASME), 2026)Abstract. Iterative solvers used in turbomachinery, spanning throughflow formulations and higher-order computational fluid dynamics (CFD), depend critically on how they are initialized. The starting state determines not ... -
Three-Dimensional Flow Field Characterization and Blockage Effects in an Open-Jet Probe Calibration Wind Tunnel
(The American Society of Mechanical Engineers (ASME), 2026)Abstract. This article presents a detailed investigation into the 3-D flow field characterization and blockage effects in an open-jet probe calibration wind tunnel, utilizing a wide array of advanced measurement techniques. ... -
Analysis of Radial Inlet Distortion on Transonic Fan Performance
(The American Society of Mechanical Engineers (ASME), 2026)Abstract. Improving fan design and performance prediction requires an understanding of the impacts of inlet distortion. Using full-annulus unsteady Reynolds-averaged Navier–Stokes (URANS) simulations, the effects of hub ... -
The Adverse Effect of Pre-Swirl on Ingestion in a Downstream Cavity
(The American Society of Mechanical Engineers (ASME), 2026)Abstract. Gas turbine designers demand accurate predictions of metal temperature to ensure acceptable operating life of components experiencing high thermal stress. Rotor–stator cavities ingest hot mainstream gas through ... -
Investigation of Ash Deposition Behavior From Biogenic Solid Fuel Under Gas Turbine Conditions With Film Cooling
(The American Society of Mechanical Engineers (ASME), 2026)Abstract. In the current state of technology, gas turbines operate mainly with fossil fuels. In order to achieve a sustainable energy supply with gas turbines, alternative fuels have to be used. In the past, many attempts ... -
Performance Sensitivity of a Grooved Tip Seal to Manufacturing and Operational Geometry Deviations
(The American Society of Mechanical Engineers (ASME), 2026)Abstract. The next generation of narrowbody commercial aircraft requires advancements in small-core gas turbines to reduce fuel consumption. However, small-core turbines include a number of physical features which are ... -
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 ... -
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 ... -
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 ... -
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 ... -
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 ... -
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 ... -
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 ... -
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 ... -
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 ...