Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 301-320 of 9298
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Experimental Evaluation of an Electric Powertrain Designed for a 180-kW Turboelectric Aircraft Ground Test Rig
(The American Society of Mechanical Engineers (ASME), 2024)This paper presents the experimental results of a representative aircraft turbo-electric powertrain. The 180-kW hybrid gas-electric ground test rig was designed, fabricated, and experimentally evaluated. Hybrid turbo-electric ... -
Step-by-Step Evaluation of the Fuel Switch From Kerosene to Hydrogen on the Thermodynamic Cycle in Gas Turbine Engines
(The American Society of Mechanical Engineers (ASME), 2024)Hydrogen combustion engines are one of the few possible ways forward to drastically reduce climate impact of aviation. While there is many information about the engine performance of hydrogen combustion engines, it is not ... -
Accuracy of Steady Pneumatic Probes in Unsteady Turbomachinery Flows
(The American Society of Mechanical Engineers (ASME), 2024)This study shows that no additional measurement error due to unsteadiness was detected, when measuring in periodic turbomachinery flows at frequencies up to 5 kHz with steady, pneumatic probes. An experiment was designed, ... -
Experimental and Numerical Investigation of Hydrogen Combustion in a Dual-Swirl Burner for Aero-Engine Applications
(The American Society of Mechanical Engineers (ASME), 2024)Green hydrogen produced by electrolysis offers a high potential for reducing CO2 emissions and thus represents a promising approach for the decarbonization of aviation. However, propulsion systems based on direct hydrogen ... -
Characteristics of Premixed Ammonia/Methane/Air Blends as an Alternative Fuel in a Swirl-Stabilized Gas Turbine Combustor Under Varying Pilot Percentage
(The American Society of Mechanical Engineers (ASME), 2024)Alternative low carbon fuel blends are a promising way toward clean energy transition in the transportation and power generation sectors. In this work, the objective was to study the combustion characteristics of one such ... -
Lean Blow-Off Behaviour of Premixed Bluff-Body Stabilized Hydrocarbon-Air Flames and Ammonia/Hydrogen/Nitrogen-Air Flames
(The American Society of Mechanical Engineers (ASME), 2024)The lean blow-off (LBO) behavior of turbulent premixed bluff-body stabilized hydrocarbon flames and ammonia/hydrogen/nitrogen flame was investigated and compared both experimentally and numerically. Simultaneous high-speed ... -
Adjoint-Based Optimization for the Venturi Mixer of A Burner
(The American Society of Mechanical Engineers (ASME), 2024)The optimization of Venturi mixers in burners is critical for enhancing combustion efficiency and minimizing emissions. In this study, we utilize the adjoint method to analyze and refine the design of a Venturi mixer. Our ... -
On the Potential of Biomass-Fueled Externally Fired Micro-Gas Turbines in the Energy Transition: Off-Design Performance Analysis
(The American Society of Mechanical Engineers (ASME), 2024)The potential of replacing the use of natural gas with biomass gasification syngas through an externally fired micro-gas turbine (EFMGTs) is the main scope of this study. This includes the performance assessment at various ... -
Prediction of Steam Turbine Blade Erosion Using Computational Fluid Dynamics Simulation Data and Hierarchical Machine Learning
(The American Society of Mechanical Engineers (ASME), 2024)The information of the degree of blade erosion is vital for the efficient operation of steam turbines. However, it is nearly impossible to directly measure the degree of blade erosion during operation. Moreover, collecting ... -
Compact Heat Exchangers With Curved Fins for Hydrogen Turbofan Intercooling
(The American Society of Mechanical Engineers (ASME), 2024)Hydrogen is being considered as a possible path toward carbon-neutral aviation. There are additional advantages besides its main benefit of CO2-free combustion. One application is to use it for aero engine heat management ... -
A Dynamic Testing Approach for Particulate Erosion–Corrosion for Gas Turbine Coatings
(The American Society of Mechanical Engineers (ASME), 2024)Particle interactions in engines can be complex phenomena leading to degradation of thermal (TBCs) and environmental barrier coatings (EBCs) meant to protect engine components. Ingestion of particles into the engine can ... -
Validation of Thermal History Coating Technology on Two Stage-One Turbine Blades
(The American Society of Mechanical Engineers (ASME), 2024)Small and midsize gas turbines for distributed power generation have been widely used in recent years, with designers constantly seeking to improve efficiency by increasing operating temperatures. Therefore, accurate thermal ... -
A Preconditioner-Based Data-Driven Polynomial Expansion Method: Application to Compressor Blade With Leading Edge Uncertainty
(The American Society of Mechanical Engineers (ASME), 2024)In engineering practice, the amount of measured data is often scarce and limited, posing a challenge in uncertainty quantification (UQ) and propagation. Data-driven polynomial chaos (DDPC) is an effective way to tackle ... -
Numerical Investigation on the Influence of Continuous Rotating Backpropagation Pressure Wave on Turbine Performance
(The American Society of Mechanical Engineers (ASME), 2024)Researches have shown that the use of a continuous detonation afterburner can improve the propulsion performance of aero engine. However, backpropagation pressure waves (BPW) generated by the pressure gain of detonation ... -
Using Machine Learning Tools for Rotating Stall Warning in a Contra-Rotating Compressor
(The American Society of Mechanical Engineers (ASME), 2024)This paper takes a low-speed axial contra-rotating compressor as the experimental object, and the sensor array is used to collect the pressure sequences in stall conditions for different speed configurations. These pressure ... -
Combustion and Emission Characteristics of an Ammonia Microgas Turbine Combustor With a Twin-Fluid Atomizer
(The American Society of Mechanical Engineers (ASME), 2024)In this study, combustion and emission characteristics in the test rig of microgas turbine with liquid ammonia fuel injection using the twin-fluid atomizers (TFAs) are investigated and compared with the previous result ... -
On the Performance of Variable-Geometry Ducted E-Fans
(The American Society of Mechanical Engineers (ASME), 2024)Electrically driven ducted fans (e-fans), either underwing-mounted or located at the aft-fuselage, can potentially improve the system overall efficiency in hybrid-electric propulsion architectures by increasing their thrust ... -
Modeling and Experimental Validation of Prechamber Jet Penetration Considering Jet Density and Ejection Pressure Variations
(The American Society of Mechanical Engineers (ASME), 2024)Although prechamber (PC) is regarded as a promising solution to enhance ignition in lean-burn gas engines, a lack of comprehensive understanding of PC jet penetration dynamics remains. This study proposed a zero-dimensional ... -
Experimental and Numerical Investigation of Dynamic Vibration Absorber Array for Vibration Mitigation of Integral Blisk
(The American Society of Mechanical Engineers (ASME), 2024)Dynamic vibration absorber array (DVAA) is a promising technique for vibration mitigation of integral blisk. In this paper, the effectiveness of the DVAA method is experimentally validated on a piezoelectric actuators-driven ... -
Prediction of Soot in a Rich–Quench–Lean Burner Using a Semidetailed JetA-1 Chemistry
(The American Society of Mechanical Engineers (ASME), 2024)This work proposes a methodology to include accurate kinetics for soot modeling taking into account real fuel complexity in large eddy simulation (LES) of aeronautical engines at a reasonable computational cost. The ...