Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 501-520 of 9564
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Pressure Gain Combustion for Gas Turbines: Analysis of a Fully Coupled Engine Model
(The American Society of Mechanical Engineers (ASME), 2024)The “Shockless Explosion Combustion” (SEC) concept for gas turbine combustors, introduced in 2014, approximates constant volume combustion (CVC) by harnessing acoustic confinement of auto-igniting gas packets. The resulting ... -
Performance Optimization of an Axial Compressor Using a Novel Multifidelity Surrogate Model Based on Flow Field Extraction
(The American Society of Mechanical Engineers (ASME), 2024)During the utilization of efficient optimization algorithms for axial compressors, the construction of a precise performance prediction surrogate model stands as a pivotal step. To reduce the cost of constructing the ... -
Sensitivity Analysis of the Static and Rotordynamic Characteristics on Geometric Parameters for a Supercritical Carbon Dioxide Hole-Pattern Damper Seal
(The American Society of Mechanical Engineers (ASME), 2024)Hole-pattern damper seal (textured stator with numerous circular-hole cavities and smooth rotor) is a typical annular damper seal that is gradually used in modern turbomachinery as a replacement of the conventional labyrinth ... -
Blade Excitation Alleviation of a Nozzleless Radial Turbine by Casing Treatment Based on Reduced-Order Model
(The American Society of Mechanical Engineers (ASME), 2024)High cycle fatigue (HCF) is the most common form of blade failure in nozzleless radial turbines. Current studies relating to blade vibration reduction focus on redesign of blade and volute geometries. These methods have ... -
Response of n-Heptane and Dodecane Swirl-Stabilized Spray Flames to Transverse Forcing Characterized by Flame Describing Functions Based on Downstream Acoustic Pressure or Velocity Signals
(The American Society of Mechanical Engineers (ASME), 2024)Predicting thermoacoustic instabilities in annular combustors requires knowledge of the impact of acoustic oscillations on heat release rate (HRR) oscillations. Flame describing functions (FDF) measured at the burner exit ... -
Understanding Environmental Barrier Coating Lifetimes and Performance for Industrial Gas Turbines
(The American Society of Mechanical Engineers (ASME), 2024)Hydrogen or hydrogen blend fuels are expected to replace natural gas in land-based industrial gas turbines (IGTs) to support a greener power economy. Silicon carbide (SiC) base ceramic matrix composites (CMCs) are considered ... -
Operation of a Compression Ignition Engine at Idling Load Under Simulated Cold Weather Conditions
(The American Society of Mechanical Engineers (ASME), 2025)Heavy-duty compression ignition (CI) engines can be subject to long periods of idling during their duty cycles. In colder climates, getting the engine and exhaust aftertreatment (EAT) system to ideal operating temperatures ... -
Effects of Recess Depth and Orifice Diameter on Pneumatic Hammer Instability in Hydrostatic Thrust Bearings: Analysis and Experimental Validation
(The American Society of Mechanical Engineers (ASME), 2024)Hydrostatic thrust bearings (HTBs) are required in various turbomachinery systems due to their substantial load capacity and superior rotor axial positioning capabilities, which minimize friction and heat generation. ... -
Adaptation of the Low Dissipation Low Dispersion Scheme for Reactive Multicomponent Flows on Unstructured Grids Using Density-Based Solvers
(The American Society of Mechanical Engineers (ASME), 2024)The low dissipation low dispersion (LD2) second-order accurate scheme is effective for scale-resolving simulations in finite volume computational fluid dynamics (CFD) solvers, thanks to its combination of a skew-symmetric ... -
An Adjustable Elastic Support Structure for Vibration Suppression of Rotating Machinery
(The American Society of Mechanical Engineers (ASME), 2025)The dynamic characteristic of a rotor-support system plays a crucial role in the operational efficiency and longevity of rotating machinery such as gas turbines. Traditional support structures with the fixed-parameter ... -
Review of the Impact of Hydrogen-Containing Fuels on Gas Turbine Hot-Section Materials
(The American Society of Mechanical Engineers (ASME), 2025)In an effort to achieve worldwide decarbonization goals, a range of low-carbon fuels is being proposed for use in power-generation gas turbines. Two promising fuels are hydrogen and ammonia, which do not produce any CO2 ... -
Study of Tandem Rotor Dual Wake Interaction With Downstream Stator Under Unsteady Numerical Approach
(The American Society of Mechanical Engineers (ASME), 2024)This paper highlights the intricate rotor–stator interaction between a tandem bladed rotor and a single-bladed stator in the light of unsteady numerical simulations. A low-speed tandem bladed compressor stage has been ... -
Experimental and Numerical Study on NOx Emissions Characteristics in a Coaxial Staged Combustor
(The American Society of Mechanical Engineers (ASME), 2024)A deep understanding of NOx formation characteristics and correlations can significantly enhance the operational adjustment efficiency of gas turbine combustors. To reduce pollutants emissions, this study proposed a coaxial ... -
Predictive Zero-Dimensional Combustion Modeling in Internal Combustion Engines With Residual Fraction and Exhaust Gas Recirculation
(The American Society of Mechanical Engineers (ASME), 2025)The combustion process in spark ignition (SI) and compression ignition (CI) engines plays a significant role in ascertaining engine performance, efficiency, and emissions. As the automotive industry faces challenges related ... -
Experimental Study on Liquid Jet Trajectory in Cross Flow of Swirling Air at Elevated Pressure Condition
(The American Society of Mechanical Engineers (ASME), 2024)Motivated by fuel atomization applications in gas turbine combustors, this paper presents an experimental examination of liquid jet trajectory and spray dynamics in crossflow of swirling air, at elevated pressure conditions. ... -
Validation of a Methodology to Assess the Flutter Limit-Cycle Oscillation Amplitude of Low-Pressure Turbine Bladed Disks—Part I: Mach Number Effects
(The American Society of Mechanical Engineers (ASME), 2024)This paper presents a methodology to estimate the vibration amplitude of fluttering low-pressure turbine (LPT) blades saturated due to friction effects. The study utilizes an analytical model that balances aerodynamic work ... -
Numerical Analysis of a Two-Phase Turbine: A Comparative Study Between Barotropic and Mixture Models
(The American Society of Mechanical Engineers (ASME), 2024)Two-phase turbines offer the potential to significantly enhance the performance of power generation and refrigeration systems. However, their development has been hindered by comparatively lower efficiencies resulting from ... -
Reversionary Control Modes for the Mitigation of Failures in a Partially Turboelectric Aircraft Propulsion System
(The American Society of Mechanical Engineers (ASME), 2024)In support of emission and fuel burn reduction goals, the aviation industry is actively pursuing the advancement of electrified aircraft propulsion (EAP) technology. This includes turbo-electric and hybrid electric propulsion ... -
A Review of Numerical Methodologies for Predicting Rotating Stall and Surge in High-Speed Centrifugal Compressors
(The American Society of Mechanical Engineers (ASME), 2024)High-speed supersonic radial compressors are a critical enabling technology for meeting the requirements of future aviation-propulsion and thermal-management systems. These turbomachines must be designed to be both efficient ... -
Performance Improvement of a Heat Sink for Battery Thermal Management System
(The American Society of Mechanical Engineers (ASME), 2024)Dissipating heat generated by onboard battery systems is a key thermal management challenge for hybrid/electric aircraft. The National Research Council Canada is collaborating with Calogy Solutions, Ltd. (Sherbrooke, Quebec, ...