Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 521-540 of 9564
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Investigation of the Coupling Between the Dynamics of Vortical Structures and Flame Stability in Bluff-Body Premixed Combustion Using Extended Spectral Proper Orthogonal Decomposition
(The American Society of Mechanical Engineers (ASME), 2024)Large eddy simulation data of a bluff-body stabilized flame are analyzed using spectral proper orthogonal decomposition (SPOD) to investigate: (i) the role of flame-vortex interactions in the dominant flow dynamics and ... -
Synergetic and Performance Characteristics of a High-Speed Precooled Propulsion Concept
(The American Society of Mechanical Engineers (ASME), 2024)Precooled air-breathing cycles are promising candidates to power future high-speed flight as well as single-stage-to-orbit vehicles, due to their increased efficiency over contemporary propulsion systems and launch vehicles. ... -
A Comprehensive Thermodynamic Analysis of Gas Turbine Combined Cycles With Pressure Gain Combustion Based on Humphrey Cycle
(The American Society of Mechanical Engineers (ASME), 2024)The paper describes a comprehensive thermodynamic analysis of the gas turbine combined cycle (CC) equipped with pressure gain combustion (PGC) based on the Humphrey cycle. PGC is represented by a steady-state zero-dimensional ... -
Generative Design of a Gas Turbine Combustor Using Invertible Neural Networks
(The American Society of Mechanical Engineers (ASME), 2024)The need to burn 100% H2 in high efficient gas turbines featuring low NOx combustion in premix mode requires the complete redesign of the combustion system to ensure stable operation without any flashback. Since all engine ... -
An Experimental Study on the Effect of Intake Pressure on a Natural Gas-Diesel Dual-Fuel Engine
(The American Society of Mechanical Engineers (ASME), 2024)Natural gas-diesel dual-fuel (NDDF) combustion can be a viable method to reduce diesel usage in compression ignition (CI) internal combustion engines. Potential benefits of NDDF engines in comparison to conventional diesel ... -
Dynamic Response of a Pivot-Mounted Squeeze Film Damper: Measurements and Predictions
(The American Society of Mechanical Engineers (ASME), 2025)Squeeze film dampers (SFDs) are widely used to reduce vibration levels in rotating equipment. These devices are installed in series with bearings and are subjected to precessional motions with the inner and outer damper ... -
Shape Optimization of an Industrial Aeroengine Combustor to Reduce Thermoacoustic Instability
(The American Society of Mechanical Engineers (ASME), 2025)We parameterize the geometry of an industrial aeroengine combustor using free-form deformation (FFD). We then define the thermoacoustic system parameters and impose the acoustic boundary conditions to calculate the ... -
Emissions and Flame Stability Assessment of Hydrogen Addition and Air Dilution in a Microgas Turbine Combustor Using Zero-Dimensional/One-Dimensional Modeling by Chemical Reactor Network
(The American Society of Mechanical Engineers (ASME), 2024)Hydrogen emerges as a promising fuel for clean and sustainable electricity production when utilized in microgas turbines (mGTs). However, some challenges linked to hydrogen usage must be overcome as its high reactivity can ... -
Modeling of Casing Containment in an Overspeeding Turbine Stage
(The American Society of Mechanical Engineers (ASME), 2024)This paper is on the structural characterization of a turbine casing in terms of blade containment. Gas turbines experience unintentional blade loss events in service for various reasons such as fatigue and the engines are ... -
Assessment of the Wilshire-Cano-Stewart Model Using Strain Energy Density Dissipation
(The American Society of Mechanical Engineers (ASME), 2024)In this study, strain energy density (SED) is employed as a creep damage parameter to calibrate the Wilshire-Cano-Stewart (WCS) model. The WCS model is an adaptation of the Wilshire equations combined with continuum damage ... -
Expanding the Capability of a Legacy Combustion Flame Tube to Test High-Temperature Engine Materials in Relevant Environments
(The American Society of Mechanical Engineers (ASME), 2024)New materials and component designs are needed to advance gas turbine engine technology and provide the performance and efficiency needs for future applications. In order to advance these materials, testing in combustion ... -
Experimental Evaluation of Combustor Configuration's Impact on a Swirl-Assisted Jet-Stabilized Combustor Performance
(The American Society of Mechanical Engineers (ASME), 2024)A major challenge for gas turbine combustor technology is the emission of NOx and carbon monoxide (CO). Achieving an optimal premixed, prevaporized, dry low-NOx condition is a critical issue for liquid fuel combustors. To ... -
An Enhanced Predictive Method for Large Droplet Breakage Based on the Discrete Particle Model
(The American Society of Mechanical Engineers (ASME), 2024)In high-speed flows, a single droplet undergoes fragmentation, yielding numerous child droplets. Conventional breakup models usually group these droplets into a single parcel, neglecting the postbreakup spatial distribution. ... -
Effects of a Three-Dimensional-Printed Atomizer Component on Fuel-Spray and Flame Characteristics of a Jet-Stabilized Compact Gas Turbine Combustor Fed With Liquid Fuels
(The American Society of Mechanical Engineers (ASME), 2024)In this work, the effects of replacing an atomizer component of a confined jet-stabilized gas turbine combustor with a three-dimensional (3D)-printed part have been studied. The part is called airblast, and it serves as a ... -
Predicting NOx Emissions of a Lean Hydrogen Flame Using High and Low Order Computational Fluid Dynamics Models
(The American Society of Mechanical Engineers (ASME), 2024)Recent efforts in numerical methods to study hydrogen combustion have allowed the development of affordable and reliable strategies that can reproduce the main structure of the flame. Although this objective represents a ... -
Cracking Behavior of Environmental Barrier Coatings/Ceramic Matrix Composite System Using Acoustic Emission and Digital Image Correlation
(The American Society of Mechanical Engineers (ASME), 2024)An investigation into the cracking behavior of advanced environmental barrier coating/woven SiC/SiC ceramic matrix composite (CMC) system under uni-axial tension testing was performed in this study. The effect of substrate ... -
Experimental Study of Natural Gas and Hydrogen Cofiring Characteristics Using Different Types of Single Nozzles of F-Class Practical Gas Turbine Combustors
(The American Society of Mechanical Engineers (ASME), 2024)Recent research on cofiring natural gas and hydrogen, a carbon-free clean fuel, aims to reduce greenhouse gas emissions from aging gas turbine power generation, a key energy issue. This approach can enhance old gas turbines ... -
Uncertainty Quantification of Compressor Performance Affected by Data-Driven Blade Geometric Deviations
(The American Society of Mechanical Engineers (ASME), 2024)Accurate uncertainty quantification of compressor performance arising from blade geometric deviations is conducive to blade optimization design, blade error verification, etc. In order to investigate the impact of actual ... -
Numerical Study on the Potential of Stratified Mixture to Improve Thermal Efficiency and Reduce Carbon Emissions in High-Speed Gasoline Direct Injection Engine
(The American Society of Mechanical Engineers (ASME), 2024)Stratified combustion improves the indicated thermal efficiency (ITE) of gasoline direct injection (GDI) engines, but the mechanism of its impact on unregulated emissions remains unclear. In this simulation-based study, ... -
Numerical Investigation of Effusion Cooling Air Influence on the CO Emissions for a Single-Sector Aero-Engine Model Combustor
(The American Society of Mechanical Engineers (ASME), 2024)Stricter aviation emissions regulations have led to the desire for lean-premixed-vaporized (LPP) combustors over rich–quench–lean (RQL) burners. While this operation mode is beneficial for reducing NOx and particulate ...