Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 5181-5200 of 9564
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Control Options for Load Rejection in a Three-Shaft Closed Cycle Gas Turbine Power Plant
(The American Society of Mechanical Engineers (ASME), 2007)An important issue to be addressed in power plants is the continued operation during load transients, such as load following and load rejection. It is inevitable that with new power plant ... -
Rotordynamic Performance of a Rotor Supported on Bump Type Foil Gas Bearings: Experiments and Predictions
(The American Society of Mechanical Engineers (ASME), 2007)Gas foil bearings (GFBs) satisfy the requirements for oil-free turbomachinery, i.e., simple construction and ensuring low drag friction and reliable high speed operation. However, GFBs have a ... -
Engine Performance Improvement by Controlling the Low Pressure Compressor Working Line
(The American Society of Mechanical Engineers (ASME), 2007)The new algorithm provides closed-loop control of the LP compressor working line in such a way as to maintain compressor stability and to provide increased power from the engine at the same ... -
Water Injection Effects on Compressor Stage Operation
(The American Society of Mechanical Engineers (ASME), 2007)In the present paper, experimental work concerning the effect of water injection on a compressor stage is presented. The effect on compressor stage performance and stability is examined for ... -
Enhanced Gas Turbine Performance Simulation Using CFD Modules in a 2D Representation of the Low-Pressure System for a High-Bypass Turbofan
(The American Society of Mechanical Engineers (ASME), 2007)The improvement of performance simulation for gas turbines has been approached in very different ways. In particular for high-bypass turbofans, efforts have been made to investigate radial flow ... -
Hybrid Kalman Filter Approach for Aircraft Engine In-Flight Diagnostics: Sensor Fault Detection Case
(The American Society of Mechanical Engineers (ASME), 2007)In this paper, a diagnostic system based on a uniquely structured Kalman filter is developed for its application to in-flight fault detection of aircraft engine sensors. The Kalman filter is ... -
Development, Testing, and Implementation of a Gas Turbine Starting Clutch With Manual Turning Feature for U.S. Navy Ships
(The American Society of Mechanical Engineers (ASME), 2007)Most gas turbine generators rely on an automatic-engaging, free-wheel clutch to connect a starting motor to accelerate the gas turbine generator from zero to some intermediate speed to enable ... -
Performance of Gas Turbine Power Plants Controlled by the Multiagent Scheme
(The American Society of Mechanical Engineers (ASME), 2007)In recent years the idea of artificial intelligence has been focused around the concept of rational agent. An agent is an (software or hardware) entity that can receive signals from the ... -
Physical Interpretation of Flow and Heat Transfer in Preswirl Systems
(The American Society of Mechanical Engineers (ASME), 2007)This paper compares heat transfer measurements from a preswirl rotor–stator experiment with three-dimensional (3D) steady-state results from a commercial computational fluid dynamics (CFD) code. The ... -
Design and Off-Design Analysis of a MW Hybrid System Based on Rolls-Royce Integrated Planar Solid Oxide Fuel Cells
(The American Society of Mechanical Engineers (ASME), 2007)In this paper the design point definition of a pressurised hybrid system based on the Rolls-Royce Integrated Planar-Solid Oxide Fuel Cells (IP-SOFCs) is presented and discussed. The hybrid system ... -
Phase-Resolved Laser Diagnostic Measurements of a Downscaled, Fuel-Staged Gas Turbine Combustor at Elevated Pressure and Comparison to LES Predictions
(The American Society of Mechanical Engineers (ASME), 2007)A technical gas turbine combustor has been studied in detail with optical diagnostics for validation of large-eddy simulations (LES). OH* chemiluminescence, OH laser-induced fluorescence (LIF) and ... -
Artificial Intelligence for the Diagnostics of Gas Turbines—Part I: Neural Network Approach
(The American Society of Mechanical Engineers (ASME), 2007)In the paper, neural network (NN) models for gas turbine diagnostics are studied and developed. The analyses carried out are aimed at the selection of the most appropriate NN structure for ... -
A Stochastic Model for a Compressor Stability Measure
(The American Society of Mechanical Engineers (ASME), 2007)A stability measure rooted in the unsteady characteristics of the flow field over the compressor rotor has been previously developed. The present work explores the relationship between the ... -
NOx Emissions of a Premixed Partially Vaporized Kerosene Spray Flame
(The American Society of Mechanical Engineers (ASME), 2007)An important question for future aeroengine combustors is how partial vaporization influences the NOx emissions of spray flames. In order to address this question an experimental study of the ... -
Characterization of Fuel Composition Effects in H2∕CO∕CH4 Mixtures Upon Lean Blowout
(The American Society of Mechanical Engineers (ASME), 2007)This paper describes measurements of the dependence of lean blowout limits upon fuel composition for H2∕CO∕CH4 mixtures. Blowout limits were obtained at fixed approach flow velocity, reactant ... -
Neural Network and Fuzzy Logic Diagnostics of 1x Faults in Rotating Machinery
(The American Society of Mechanical Engineers (ASME), 2007)In this paper, the application of neural networks and fuzzy logic to the diagnosis of faults in rotating machinery is investigated. The learning-vector-quantization (LVQ) neural network is applied ... -
Artificial Intelligence for the Diagnostics of Gas Turbines—Part II: Neuro-Fuzzy Approach
(The American Society of Mechanical Engineers (ASME), 2007)In the paper, neuro-fuzzy systems (NFSs) for gas turbine diagnostics are studied and developed. The same procedure used previously for the setup of neural network (NN) models (, , , and , ... -
Laser-Based Investigations of Thermoacoustic Instabilities in a Lean Premixed Gas Turbine Model Combustor
(The American Society of Mechanical Engineers (ASME), 2007)Nonintrusive laser-based and optical measurements were performed in a gas turbine model combustor with a lean premixed swirl-stabilized CH4-air flame at atmospheric pressure. The main objective ... -
Simulation of Producer Gas Fired Power Plants with Inlet Fog Cooling and Steam Injection
(The American Society of Mechanical Engineers (ASME), 2007)Biomass can be converted to energy via direct combustion or thermochemical conversion to liquid or gas fuels. This study focuses on burning producer gases derived from gasifying biomass wastes ... -
Experimental and Kinetic Modeling of Kerosene-Type Fuels at Gas Turbine Operating Conditions
(The American Society of Mechanical Engineers (ASME), 2007)Experimental and kinetic modeling of kerosene-type fuels is reported in the present work with special emphasis on the low-temperature oxidation phenomenon relevant to gas turbine premixing conditions. ...