Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 421-440 of 9564
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Transient Shutdown Cooling Simulation of a Gas Turbine Test Rig Configuration Under Ventilated Natural Convection
(The American Society of Mechanical Engineers (ASME), 2024)A transient simulation of shutdown cooling for a gas turbine test rig configuration under ventilated natural convection has been successfully demonstrated using a coupled aerothermal approach. Large eddy simulation (LES) ... -
Combining Machine Learning, Embedded Sensor Networks and Additive Burner Design for Combustor Structural Health Monitoring
(The American Society of Mechanical Engineers (ASME), 2024)The crystAIr project is about sensitizing burners for flame monitoring based on a discrete number of dynamic pressure sensors and a machine learning approach. The context is the development of better aircraft engines and ... -
Model Predictive Control Strategies for Turbine Electrified Energy Management
(The American Society of Mechanical Engineers (ASME), 2024)The increasing electrification of aircraft propulsion systems is leading to new control architectures being developed to address integration between electric machines (EMs) and gas-based turbine engines. For hybrid-electric ... -
A Low Mach Preconditioned Harmonic Balance Solver for Cavity Flutter Computations
(The American Society of Mechanical Engineers (ASME), 2024)Labyrinth seal flutter is a critical phenomenon in turbomachinery, as it can lead to severe structural vibrations and potential component damage. Accurate prediction and mitigation of flutter are paramount to ensuring the ... -
Development of a Hydrogen Microgas Turbine Combustor: NOx Emissions and Secondary Air Injection
(The American Society of Mechanical Engineers (ASME), 2024)On the way to defossilization, green hydrogen is a promising way to substitute natural gas (NG) and oil in the gas turbine industry. In the scope of the H2mGT project, a microgas turbine (mGT) burner with 100% hydrogen ... -
Techno-Economic Analysis of the Solid Oxide Semiclosed CO2 Cycle for Different Plant Sizes
(The American Society of Mechanical Engineers (ASME), 2024)This work presents a detailed techno-economic evaluation of the solid oxide semiclosed CO2 (SOS-CO2) cycle, a hybrid semiclosed cycle with solid oxide fuel cells (SOFC) developed by Politecnico di Milano. for different ... -
Development of a Method for Shape Optimization for a Gas Turbine Fuel Injector Design Using Metal-Additive Manufacturing
(The American Society of Mechanical Engineers (ASME), 2024)Adjoint shape optimization has enabled physics-based optimal designs for aerodynamic surfaces. Additive manufacturing (AM) makes it possible to manufacture complex shapes. However, there has been a gap between optimal and ... -
Teaching Aero-Engine Performance: From Analytics to Hands-On Exercises Using Gas Turbine Performance Software
(The American Society of Mechanical Engineers (ASME), 2024)In this paper, we present an approach for teaching turbojet engine performance that combines mathematical analysis with the use of performance software to provide students with a comprehensive and in-depth understanding ... -
Forced Response of Rotating Blisks: Prediction and Correlation to Blade Tip-Timing Measurements
(The American Society of Mechanical Engineers (ASME), 2024)This paper explores two different blisk dynamic models for resonant vibration prediction of a rotating blisk test piece, i.e., the Model-BDTID and geometrically mistuned models (GMM). The former represents a mistuned blisk ... -
Performance Analysis of a Self-Decarbonizing Combustor
(The American Society of Mechanical Engineers (ASME), 2024)Hydrogen is envisioned to be a key decarbonization solution for fossil fuel-dependent power generation and aviation industries. At present, a significant fraction of the generated electrical power is derived from natural ... -
Analysis of Thermo-Acoustic Instabilities Induced by Hydrogen Swirling Flames
(The American Society of Mechanical Engineers (ASME), 2024)A considerable research effort has been concerned combustion dynamics of systems fed with hydrocarbon fuels. The case of pure hydrogen/air flames deserves to be specifically considered because hydrogen is highly reactive, ... -
Global Stability and Forced Response Analysis of Swirling Flows in Aviation Combustors
(The American Society of Mechanical Engineers (ASME), 2024)Swirling jets are canonical flow fields used to stabilize flames in many gas-turbine combustion systems. These flows amplify background acoustic disturbances and perturb the flame, producing combustion noise and potentially ... -
Temperature Dependence of Aerated Turbine Lubricating Oil Degradation From a Lab-Scale Test Rig
(The American Society of Mechanical Engineers (ASME), 2025)Operational, efficiency, safety, and economic issues may arise from the formation and accumulation of sludge, varnish, and coke deposits that result from the degradation of engine lubricants through oxidation or thermal ... -
Tool Wear Prediction in Broaching Based on Tool Geometry
(The American Society of Mechanical Engineers (ASME), 2024)The aircraft engine is a safety-critical part of an aircraft. Constructive modifications resulting in ecological and economic improvements of the engine lead to necessary changes in manufacturing processes. The turbine ... -
Multidimensional Modeling of Mixture Formation in a Hydrogen-Fueled Heavy-Duty Optical Engine With Direct Injection
(The American Society of Mechanical Engineers (ASME), 2025)Hydrogen (H2), as a carbon-free fuel, is considered as one of the most promising solutions to reduce the carbon footprint of hard-to-decarbonize energy and transportation sectors. As such, hydrogen-fueled internal combustion ... -
Comprehensive Life Cycle Analysis of Diverse Hydrogen Production Routes and Application on a Hydrogen Engine
(The American Society of Mechanical Engineers (ASME), 2025)In the effort of achieving net-zero greenhouse gas (GHG) emissions, hydrogen is becoming increasingly relevant in several sectors such as automotive, cogeneration, maritime, off-road, and railroad. However, hydrogen can ... -
An Experimental Comparison of Methanol Combustion Strategies: Spark Ignition Versus Compression Ignition
(The American Society of Mechanical Engineers (ASME), 2025)Methanol has garnered significant attention over the past few years due to its potential as a hydrogen carrier in a future green economy. As a result, it is a leading candidate to displace fossil fuels in the transportation ... -
Effect of Blending Ammonia With Natural Gas Hydrocarbons on the Performance of a Heavy-Duty Spark Ignition Engine
(The American Society of Mechanical Engineers (ASME), 2025)Ammonia (NH3) is a promising carbon-free fuel candidate to replace conventional petroleum-based fuels. However, NH3 has low flame speed, low calorific value, narrow flammability limits, and requires high ignition energy. ... -
The Impact of Different Equilibrium Hypotheses on the Nonlinear Response of Bladed Disks
(The American Society of Mechanical Engineers (ASME), 2025)Underplatform dampers (UPDs) are widely used in bladed disks to mitigate blades' vibration amplitude. Such devices introduce localized nonlinearities, whose modeling requires nonlinear solution techniques. When the harmonic ... -
Metallurgical Investigation and Failure Analysis in GTD-111 Stage 2 Buckets From an Industrial F-Class Gas Turbine
(The American Society of Mechanical Engineers (ASME), 2025)A utility experienced cracking in multiple stage 2 buckets (S2Bs) in a large F-class power generation gas turbine after only 7348 h and 31 starts following a standard repair and rejuvenation heat treatment cycle. The blades ...