Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 101-120 of 9298
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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 ... -
Development of Large-Diameter Hybrid Film-Riding Seals for Supercritical Carbon Dioxide Turbines
(The American Society of Mechanical Engineers (ASME), 2024)Compared to traditional labyrinth seals, large-diameter (about 24 in or 609.6 mm) film-riding face seals are worth 0.55–0.65% points efficiency for utility-scale supercritical carbon dioxide (sCO2) turbines. Conventional ... -
Dynamic Response of a Rotor Supported on Hybrid Bearings in Air, Water, and Liquid Nitrogen: Measurements and Comparisons to Predictions
(The American Society of Mechanical Engineers (ASME), 2024)Modern liquid rocket engine turbopumps implement hybrid bearings, which combine hydrostatic and hydrodynamic fluid film principles, in compact and lightweight units known for their superior reusability, durability, and ... -
Design and Manufacture of SiC/SiC Nozzle Guide Vanes With Environmental Barrier Coatings for High-Pressure Turbines
(The American Society of Mechanical Engineers (ASME), 2024)Increasing the efficiency of jet engines is essential to meet the demanded climate targets. Ceramic matrix composites (CMCs) are strong candidates for aircraft applications because they withstand high temperatures, while ... -
A High-Temperature, High-Speed, Oil-Free Syngas Compressor for Small-Scale Combined Heat and Power
(The American Society of Mechanical Engineers (ASME), 2024)For low-emission, small-scale combined heat and power generation, integrating a biomass gasifier with a downstream solid oxide fuel cell system is very promising due to their similar operating conditions in terms of ... -
Compressor Surge Identification in Innovative Heat-Pump Systems Equipped by Vaned Diffuser Centrifugal Compressor
(The American Society of Mechanical Engineers (ASME), 2024)In the present energy scenario, heat pumps (HPs) are assuming an important role to improve energy efficiency in reversible cooling systems. In particular, in case of industrial size plants, centrifugal compressors are ... -
Analysis and Optimization of the Fatigue Damage Accumulation Under Transient Vibrations of Mistuned Bladed Disks
(The American Society of Mechanical Engineers (ASME), 2024)This paper develops an efficient method for calculations of stress levels, accumulation of high-cycle fatigue (HCF), and mistuning optimization aimed at the reduction of the fatigue damages for mistuned bladed disks under ...