Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 6241-6260 of 9564
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Reduced Order Modeling and Vibration Analysis of Mistuned Bladed Disk Assemblies With Shrouds
(The American Society of Mechanical Engineers (ASME), 1999)This paper presents important improvements and extensions to a computationally efficient reduced order modeling technique for the vibration analysis of mistuned bladed disks. In particular, this ... -
Fault Tolerant Magnetic Bearings
(The American Society of Mechanical Engineers (ASME), 1999)A fault tolerant magnetic bearing system was developed and demonstrated on a large flexible-rotor test rig. The bearing system comprises a high speed, fault tolerant digital controller, three ... -
An Assessment of the Performance of Closed Cycles With and Without Heat Rejection at Cryogenic Temperatures
(The American Society of Mechanical Engineers (ASME), 1999)This paper presents optimized cycle performance that can be obtained with systems including a closed cycle gas turbine (CCGT). The influence of maximum temperature, minimum temperature, and ... -
Coating Life Prediction for Combustion Turbine Blades
(The American Society of Mechanical Engineers (ASME), 1999)A life prediction method for combustion turbine blade coatings has been developed by modeling coating degradation mechanisms including oxidation, spallation, and aluminum loss due to inward ... -
Diffusion Bonding of CMSX-4 to UDIMET 720 Using PVD-Coated Interfaces and HIP
(The American Society of Mechanical Engineers (ASME), 1999)There is an increasing interest in development of manufacturing methods for Dual Property BLISKs, consisting of creep resistant airfoils and fatigue resistant disks bonded together by a durable ... -
Reaction Diffusion Behaviors for Interface Between Ni-Based Super Alloys and Vacuum Plasma Sprayed MCrAlY Coatings
(The American Society of Mechanical Engineers (ASME), 1999)The object of this study is overlay coatings of MCrAlY alloy sprayed by a vacuum plasma spray (VPS) process for the protection against high-temperature corrosion and oxidation in the field of ... -
Minimization of the Local Rates of Entropy Production in the Design of Air-Cooled Gas Turbine Blades
(The American Society of Mechanical Engineers (ASME), 1999)The paper presents the results of a numerical configuration study made on a two dimensional model of an internally cooled gas turbine vane. The analysis applies to a two-dimensional cascade ... -
Dynamic Behavior of Geared Rotors
(The American Society of Mechanical Engineers (ASME), 1999)This paper is concerned with the dynamic behavior of geared rotor systems supported by squeeze film dampers, wherein coupled bending torsion vibrations occur. Considering the imbalance forces and ... -
Flow Measurements in a Curved-Wall Annular Contraction
(The American Society of Mechanical Engineers (ASME), 1999)Flow development in an annular contraction is of fundamental and practical importance in various applications including the gas turbine systems. This paper describes an experimental study of flow ... -
Active Control of Combustion for Optimal Performance
(The American Society of Mechanical Engineers (ASME), 1999)Combustion-zone stoichiometry and fuel-air premixing were actively controlled to optimize the combustor performance over a range of operating conditions. The objective was to maximize the combustion ... -
Rapid Characterization of Fuel Atomizers Using an Optical Patternator
(The American Society of Mechanical Engineers (ASME), 1999)Planar laser scattering (PLS) and planar laser-induced fluorescence (PLIF) techniques are currently being used for rapid characterization of fuel sprays associated with gas turbine atomizers, diesel ... -
Status of Westinghouse Hot Gas Filters for Coal and Biomass Power Systems
(The American Society of Mechanical Engineers (ASME), 1999)Several advanced, coal and biomass-based combustion turbine power generation technologies using solid fuels (IGCC, PFBC, Topping-PFBC, HIPPS) are currently under development and demonstration. A key ... -
High Pressure Test Results of a Catalytically Assisted Ceramic Combustor for a Gas Turbine
(The American Society of Mechanical Engineers (ASME), 1999)A catalytically assisted ceramic combustor for a gas turbine was designed to achieve low NOx emission under 5 ppm at a combustor outlet temperature over 1300°C. This combustor is composed ... -
Nonlinear Heat-Release/Acoustic Model for Thermoacoustic Instability in Lean Premixed Combustors
(The American Society of Mechanical Engineers (ASME), 1999)Lean premixed combustors, such as those used in industrial gas turbines to achieve low emissions, are often susceptible to the thermoacoustic combustion instabilities, which manifest themselves ... -
Testing and Modeling Gas Turbines Using Multisine Signals and Frequency-Domain Techniques
(The American Society of Mechanical Engineers (ASME), 1999)The frequency-domain identification of gas turbine dynamics is discussed. Models are directly estimated from engine data and used to validate linearized thermodynamic models derived from the engine ... -
Acoustic Sensitivities of Lean-Premixed Fuel Injectors in a Single Nozzle Rig
(The American Society of Mechanical Engineers (ASME), 1999)An experimental and numerical investigation into the attenuation of combustion induced pressure oscillations in a single nozzle rig was undertaken at the United Technologies Research Center. Results ... -
A Parametric Starting Study of an Axial-Centrifugal Gas Turbine Engine Using a One-Dimensional Dynamic Engine Model and Comparisons to Experimental Results: Part II—Simulation Calibration and Trade-Off Study
(The American Society of Mechanical Engineers (ASME), 1999)A generic one-dimensional gas turbine engine model, developed at the Arnold Engineering Development Center, has been configured to represent the gas generator of a General Electric axial-centrifugal ... -
Fatigue Strength Reliability Analysis of Diesel Connecting Rod Based on Stochastic Finite Element Method
(The American Society of Mechanical Engineers (ASME), 1999)In this paper, stress of a diesel connecting rod (CR) is analyzed by the perturbation stochastic finite element method (PSFEM). A fatigue failure criterion of a diesel CR is also put forward ... -
Computational Prediction of Tube Erosion in Coal Fired Power Utility Boilers
(The American Society of Mechanical Engineers (ASME), 1999)Erosion of boiler tubes causes serious operational problems in many pulverized coal-fired utility boilers. A new erosion model has been developed in the present study for the prediction of ... -
Imbalance Response of a Rotor Supported on Open-Ends Integral Squeeze Film Dampers
(The American Society of Mechanical Engineers (ASME), 1999)Rotor vibration attenuation and structural components isolation in jet engines are achieved with squeeze film dampers, many of them supported on long elastic squirrel cages. Integral squeeze film ...