Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 361-380 of 9564
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Methodology for Modeling Nonlinear Thermomechanical Response With Wear at High-Speed Interactions: Application to a Pin–Disk Configuration
(The American Society of Mechanical Engineers (ASME), 2024)An aircraft engine is a complex structure for which some components can come into contact at high speed. Modeling this behavior is very complex as multiple physics must be considered. State-of-the-art methodologies usually ... -
Optimal Part-Load Performance of Supercritical Carbon Dioxide Brayton Cycles During Inventory Control
(The American Society of Mechanical Engineers (ASME), 2024)Supercritical carbon dioxide (sCO2) cycles are gaining attention for their efficiency and low carbon footprint in power plants. This study focuses on optimizing the performance of a 5 MW simple recuperated sCO2 Brayton ... -
Nonlinear Normal Modes-Related Isolated Branches of Subharmonic Solutions for Forced Response Blade-Tip/Casing Contact Problems
(The American Society of Mechanical Engineers (ASME), 2024)This article investigates the emergence of isolated branches of solutions for blade-tip/casing structural contact configurations by means of a numerical procedure relying on Melnikov's energy principle. This study is carried ... -
Bayesian Inference for the Calibration of Cohesive Zone Models of Dovetail Specimens From Laminated Composite Fan Blade
(The American Society of Mechanical Engineers (ASME), 2024)Composite fan blades are the preferred alternative for the fan stage of most advanced high bypass ratio turbofan engines. The dovetail part bears a significant centrifugal load, and its ability to safely bear this load is ... -
Numerical Investigation of Two-Phase n-Decane/Air Rotating Detonation Engines With Different Numbers of Fuel Orifices
(The American Society of Mechanical Engineers (ASME), 2024)In this study, n-decane/air two-phase rotating detonation is numerically investigated based on Eulerian–Lagrangian method. Three-dimensional rotating detonation chamber (RDC) with various numbers of fuel orifices (30, 45, ... -
Tracking of Bristle Tip Deflections to Demonstrate Blow-Down in Brush Seals
(The American Society of Mechanical Engineers (ASME), 2024)Sealing in gas turbines is paramount to overall performance and efficiency. Brush seals offer superior performance compared to other sealing solutions commonplace in modern turbomachinery. When subjected to a pressure load, ... -
Experimental Demonstration of a High-Power Density Electric Generator
(The American Society of Mechanical Engineers (ASME), 2024)Electric vehicles (EVs) and hybrid powertrain vehicles are an increasingly common alternative to pure gasoline vehicles. However, most have significantly shorter drivable ranges than combustion engine vehicles, require a ... -
Investigation of Water Film Dynamics on the Surface of an Airfoil in a High-Speed Flow and Subsequent Ligament Formation and Breakup From the Trailing Edge
(The American Society of Mechanical Engineers (ASME), 2024)In this work, the dynamics of a liquid film on the surface of NACA 0012 airfoil placed in a high-speed air flow is investigated. The findings complement previous results obtained on time averaged ligament behavior and ... -
Navigating Technological Risks: An Uncertainty Analysis of Powertrain Technology in Hybrid-Electric Commuter Aircraft
(The American Society of Mechanical Engineers (ASME), 2024)This study addresses the uncertainties in hybrid-electric powertrain technology for a 19-passenger commuter aircraft, focusing on two future Entry-Into-Service timeframes: 2030 and 2040. The methodology is split into a ... -
Extended Testing of the Auto-Ignition Characteristics of Hydrogen–Natural Gas Mixtures for the Safety of Power Plants
(The American Society of Mechanical Engineers (ASME), 2024)A successful transition to global clean energy hinges on meeting the world’s growing demand for power, while at the same time reducing greenhouse gas emissions. Achieving this will require significant growth in electricity ... -
Flame Speed Measurements of Ammonia–Hydrogen Mixtures for Gas-Turbines
(The American Society of Mechanical Engineers (ASME), 2024)Recent findings from the U.S. Energy Information Administration project an increase in domestic fossil fuel consumption (e.g., petroleum and natural gas) and global greenhouse gas emissions through 2050 (Nalley, S., 2021, ... -
Centrifugal Compressor Surge in Innovative Heat Pump: Fluid Dynamic and Vibrational Analysis
(The American Society of Mechanical Engineers (ASME), 2024)In the current energy scenario, it is necessary to reduce fossil fuel consumption to achieve the far-sighted and stringent decarbonization goals. To date, heat is mainly produced through fossil fuels. Alternatively, ... -
A Perspective on the Process and Turbomachinery Design of Compressed Air Energy Storage Systems
(The American Society of Mechanical Engineers (ASME), 2024)The present paper will describe the Baker Hughes experience in the development of the turbomachinery equipment for Hydrostor's advanced compressed air energy storage (A-CAES) system. At the core of a compressed air energy ... -
Optimization of a Hydrogen-Fueled Parametric Strut Injector Using an Automated Workflow Computational Fluid Dynamics Method
(The American Society of Mechanical Engineers (ASME), 2024)A strut injector for burning hydrogen has been optimized using an automated workflow system. In order to choose the optimal set of injectors to cover the design space, an optimized design of experiments (DOE) method was ... -
Thickened Flame Model Extension for Dual Gas Turbine Combustion: Validation Against Single Cup Atmospheric Test
(The American Society of Mechanical Engineers (ASME), 2024)The development of predictive combustion models is more and more strategic in the design definition of gas turbine (GT) combustor. The thickened flame model (TFM), despite its high computational cost, is one of the most ... -
Prediction of the Flame Characteristics of an Industrial Gas Turbine Operated With CO2-Diluted Air Through a High-Fidelity Numerical Analysis: A Comparison Between Flamelet Generated Manifolds and Artificially Thickened Flame
(The American Society of Mechanical Engineers (ASME), 2024)In light of the global commitment to decarbonize industrial processes, carbon capture and storage (CCS) plays a pivotal role in mitigating greenhouse gas emissions from gas turbine (GT) power generation processes. Achieving ... -
Optimization of Smooth Straight-Through Labyrinth Seal Based on XGBoost and Improved Genetic Algorithm
(The American Society of Mechanical Engineers (ASME), 2024)Improving the sealing performance of labyrinth seal is beneficial in reducing the loss of downstream components as well as improving the aero-engines' efficiency. Meanwhile, the optimization of labyrinth seal is more ... -
Data-Driven Generative Model Aimed to Create Synthetic Data for the Long-Term Forecast of Gas Turbine Operation
(The American Society of Mechanical Engineers (ASME), 2024)The prediction of gas turbine (GT) future health state plays a strategic role in the current energy sector. However, training an accurate prognostic model is challenging in case of limited historical data (e.g., new ... -
Numerical Investigation of Flow Structure and Pressure Drop Prediction for Radial Inflow Between Corotating Disks With Negative Effective Inlet Swirl Ratio
(The American Society of Mechanical Engineers (ASME), 2024)This paper presents a numerical simulation of the flow structure of radial inflow between corotating disks with a negative ceff (effective inlet swirl ratio), which may occur in a vortex reducer equipped with deswirl ... -
Application of an Improved Workflow for the Identification of Flame Dynamics to Swirl-Stabilized Wet Combustion
(The American Society of Mechanical Engineers (ASME), 2024)The estimation of flame transfer functions (FTF) from time series data generated by large eddy simulation (LES) via system identification (SI) is an important element of thermoacoustic analysis. A continuous time series ...