Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 1461-1480 of 9564
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The Feasibility of an Euler–Lagrange Approach for the Modeling of Wet Steam
(The American Society of Mechanical Engineers (ASME), 2021)This study investigates the applicability of an Euler–Lagrange approach for the calculation of nucleation and condensation of steam flows. Supersonic nozzles are used as generic validation cases, as their high expansion ... -
Thermo-Economic Assessment Under Electrical Market Uncertainties of a Combined Cycle Gas Turbine Integrated With a Flue Gas-Condensing Heat Pump
(The American Society of Mechanical Engineers (ASME), 2021)Renewable energy penetration is growing, due to the target of greenhouse-gas-emission reduction, even though fossil fuel-based technologies are still necessary in the current energy market scenario to provide reliable ... -
Assessment of Current Capabilities and Near-Term Availability of Hydrogen-Fired Gas Turbines Considering a Low-Carbon Future
(The American Society of Mechanical Engineers (ASME), 2021)A confluence of technology development, policy support, and industry investment trends is accelerating the pace of Hydrogen (H2) technology demonstrations, increasing the likelihood of power sector impacts. In preparation ... -
Modeling of Partially Wetting Liquid Film Using an Enhanced Thin Film Model for Aero-Engine Bearing Chamber Applications
(The American Society of Mechanical Engineers (ASME), 2021)In the case of aero-engine, thin lubricating film servers dual purpose of lubrication and cooling. Prediction of dry patches or lubricant starved region in bearing or bearing chambers are required for safe operation of ... -
Research of Exhaust Gas Recirculation on Commercial Turbocharged Gasoline Direct Injection Engine With Intense Tumble Flow
(The American Society of Mechanical Engineers (ASME), 2021)The application of exhaust gas recirculation (EGR) technology on gasoline direct injection (GDI) engines can suppress knocking, reduce fuel consumption, and reduce NOx emissions. The effects of EGR with enhanced intake ... -
Aerothermal Optimization of Bladeless Turbines
(The American Society of Mechanical Engineers (ASME), 2021)The harnessing of mechanical power from supersonic flows is constrained by physical limitations and substantial aerodynamic losses. Bladeless axial turbines are a viable alternative to extract power in such harsh conditions ... -
Evaluation of the Rotor Temperature Distribution of an Automotive Turbocharger Under Hot Gas Conditions Including Indirect Experimental Validation
(The American Society of Mechanical Engineers (ASME), 2021)While turbocharging is a key technology for improving the performance and efficiency of internal combustion engines, the operating behavior of the turbocharger is highly dependent on the rotor temperature distribution as ... -
Combustion Tuning for a Gas Turbine Power Plant Using Data-Driven and Machine Learning Approach
(The American Society of Mechanical Engineers (ASME), 2021)Conventional physics-based or experimental-based approaches for gas turbine combustion tuning are time consuming and cost intensive. Recent advances in data analytics provide an alternative method. In this paper, we present ... -
Performance Degradation Due to Fouling and Recovery After Washing in a Multistage Test Compressor
(The American Society of Mechanical Engineers (ASME), 2021)Land-based power units have to fulfill even more high levels of production and reliability. In harsh environments (desert and tropical installations, typically), the power unit ingests high amounts of dust that might deposit ... -
Analysis of Nonlinear Modal Damping Due to Friction at Blade Roots in Mistuned Bladed Disks
(The American Society of Mechanical Engineers (ASME), 2021)A method is proposed to analyze the modal damping in mistuned bladed-disk with root joints using large finite element models and the detailed description of frictional interactions at contact interfaces. The influence of ... -
Modeling of Natural Gas Composition Effect on Low NOx Burners Operation in Heavy Duty Gas Turbine
(The American Society of Mechanical Engineers (ASME), 2021)This paper addresses the impact of natural gas composition on both the operability and emissions of lean premixed gas turbine combustion system. This is an issue of growing interest due to the challenge for gas turbine ... -
Thermo-Structural Analysis of Steam Turbine Startup With and Without Integrated Prewarming System Using Hot Air
(The American Society of Mechanical Engineers (ASME), 2021)Motivated by the urgent need for flexibility and startup capability improvements of conventional power plants in addition to extending their life cycle, General Electric provides its customers with a product to prewarm ... -
Key Features of the Transient Amplification of Mistuned Systems
(The American Society of Mechanical Engineers (ASME), 2021)The dynamic behavior of bladed disks in resonance crossing has been intensively investigated in the community of turbomachinery, addressing the attention to (1) the transient-type response that appear when the resonance ... -
Improvement of Turboshaft Restart Time Through an Experimental and Numerical Investigation
(The American Society of Mechanical Engineers (ASME), 2021)Inflight shutdown of one engine for twin-engine helicopters has proven beneficial for fuel consumption. A new flight mode is then considered, in which one engine is put into sleep mode while the second engine runs at nominal ... -
Structured Methodology for Clustering Gas Turbine Transients by Means of Multivariate Time Series
(The American Society of Mechanical Engineers (ASME), 2021)At present, the challenges related to energy market force gas turbine owners to improve the reliability and availability of gas turbine engines, especially in the ever competitive Oil and Gas sector. Gas turbine trip leads ... -
Elimination of Numerical Damping in the Stability Analysis of Noncompact Thermoacoustic Systems With Linearized Euler Equations
(The American Society of Mechanical Engineers (ASME), 2021)The hybrid computational fluid dynamics/computational aeroacoustics (CFD/CAA) approach represents an effective method to assess the stability of noncompact thermoacoustic systems. This paper summarizes the state-of-the-art ... -
A Multifidelity Aero-Thermal Design Approach for Secondary Air Systems
(The American Society of Mechanical Engineers (ASME), 2021)The paper presents a multidisciplinary approach for aero-thermal and heat transfer analysis for internal flows. The versatility and potential benefit offered by the approach are described through the application to a ... -
Model-Based Analysis of a Liquid Organic Hydrogen Carrier (LOHC) System for the Operation of a Hydrogen-Fired Gas Turbine
(The American Society of Mechanical Engineers (ASME), 2021)One of the main challenges currently hindering the transition to energy systems based on renewable power generation is grid stability. To compensate for the volatility of wind- and solar-based power generation, storage ... -
Experimental and Numerical Assessment of Mistuning Effects on Vibratory Response of a Bladed Disk With Underplatform Dampers
(The American Society of Mechanical Engineers (ASME), 2021)This paper presents experimental and numerical investigation of mistuned forced responses of an integrally bladed disk with full set of underplatform dampers (UPDs). This research aims at providing: 1. An experimental ... -
Water Droplet Erosion Life Prediction Method for Steam Turbine Blade Materials Based on Image Recognition and Machine Learning
(The American Society of Mechanical Engineers (ASME), 2021)In this paper, a method for predicting remaining useful life (RUL) of turbine blade under water droplet erosion (WDE) based on image recognition and machine learning is presented. Using the experimental rig for testing the ...