Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 5801-5820 of 9564
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An Improved Transfer Matrix Method for Steady-State Analysis of Nonlinear Rotor-Bearing Systems
(The American Society of Mechanical Engineers (ASME), 2002)An improved transfer matrix method is developed to analyze nonlinear rotor-bearing systems. The rotating shaft is described by the Timoshenko beam theory which considers the effect of the rotary ... -
Contact Stresses in Dovetail Attachments: Physical Modeling
(The American Society of Mechanical Engineers (ASME), 2002)Simple physical models for the stresses in dovetail attachments are developed. These models address: to slip or not to slip, nominal stresses during loading up, peak contact and shear stresses ... -
Performance of a Foil-Magnetic Hybrid Bearing
(The American Society of Mechanical Engineers (ASME), 2002)To meet the advanced bearing needs of modern turbomachinery, a hybrid foil-magnetic hybrid bearing system was designed, fabricated, and tested in a test rig designed to simulate the rotor ... -
Rotor/Seal Experimental and Analytical Study on Full Annular Rub
(The American Society of Mechanical Engineers (ASME), 2002)Rotor/seal full annular rub, including synchronous (forward) and reverse (backward) precessions, has been investigated both experimentally and analytically. Of particular interest is the finding of ... -
Flexible Bearing Supports, Using Experimental Data
(The American Society of Mechanical Engineers (ASME), 2002)A laboratory rotor, representing a scaled-down model of a three-stage compressor supported by fluid film bearings on anisotropic flexible supports was analyzed. The support characteristics were ... -
Thermoelastic Stress Analysis: An NDE Tool for Residual Stress Assessment of Metallic Alloys
(The American Society of Mechanical Engineers (ASME), 2002)The primary objective of this report involves studying and developing various experimental techniques for accurate measurement of the mean stress effect in thermoelastic stress analysis (TSA, also ... -
Measurements of Rotordynamic Coefficients of Hybrid Bearings With (a) a Plugged Orifice, and (b) a Worn Land Surface
(The American Society of Mechanical Engineers (ASME), 2002)Test results are presented for the rotordynamic coefficients of a hybrid bearing that is representative of bearings for liquid-rocket-engine turbopump applications. The bearing is tested in the ... -
Aluminizing Behaviors of Vacuum Plasma Sprayed MCrAlY Coatings
(The American Society of Mechanical Engineers (ASME), 2002)The objective of this study is aluminide overlay coatings of MCrAlY sprayed by a vacuum plasma spraying (VPS) process for the protection against high-temperature corrosion and oxidation of gas ... -
A Model for Multicomponent Spray Vaporization in a High-Pressure and High-Temperature Environment
(The American Society of Mechanical Engineers (ASME), 2002)A multicomponent droplet vaporization model including both gas and liquid phase transport processes was developed for multidimensional spray computations. This paper focuses on two effects altering ... -
Dynamic Modeling of a Cogenerating Nuclear Gas Turbine Plant—Part I: Modeling and Validation
(The American Society of Mechanical Engineers (ASME), 2002)The high-temperature gas-cooled reactor is a promising concept for inherently safe nuclear power generation. This article deals with dynamic modeling of a combined heat and power plant, based ... -
CFD Predictions and Field Measurements of NOx Emissions From LM1600 Gas Turbine During Part Load Operation
(The American Society of Mechanical Engineers (ASME), 2002)CFD simulations of the combustion process and formation of emissions in an industrial GE LM1600 gas turbine have been performed over a range of unit loads. Two combustion models were considered ... -
Influence of Processing on Microstructure and Performance of Electron Beam Physical Vapor Deposition (EB-PVD) Thermal Barrier Coatings
(The American Society of Mechanical Engineers (ASME), 2002)The paper addresses the effect of processing parameters on microstructure and lifetime of electron beam physical vapor deposition, partially yttria-stabilized zirconia (EB-PVD PYSZ) coatings deposited ... -
A Demonstration of Artificial Neural-Networks-Based Data Mining for Gas-Turbine-Driven Compressor Stations
(The American Society of Mechanical Engineers (ASME), 2002)This paper presents a successful demonstration of application of neural networks to perform various data mining functions on an RB211 gas-turbine-driven compressor station. Radial basis function ... -
Allocating the Causes of Performance Deterioration in Combined Cycle Gas Turbine Plants
(The American Society of Mechanical Engineers (ASME), 2002)A method for defining which parts of a combined cycle gas turbine (CCGT) power plant are responsible for performance deviations is presented. When the overall performances deviate from their ... -
Multicomponent and High-Pressure Effects on Droplet Vaporization
(The American Society of Mechanical Engineers (ASME), 2002)This paper deals with the multicomponent nature of gas turbine fuels under high-pressure conditions. The study is motivated by the consideration that the droplet submodels that are currently ... -
Dynamic Modeling of a Cogenerating Nuclear Gas Turbine Plant—Part II: Dynamic Behavior and Control
(The American Society of Mechanical Engineers (ASME), 2002)Using the dynamic model of the cogenerating nuclear gas turbine plant developed in Part I of this article, the dynamic behavior of this plant is analyzed and a control structure is designed. ... -
Measurement of Transfer Matrices and Source Terms of Premixed Flames
(The American Society of Mechanical Engineers (ASME), 2002)An experimental method to determine the thermoacoustic properties of a gas turbine combustor using a lean-premixed low emission swirl stabilized burner is presented. To model thermoacoustic ... -
Development of Hexaaluminate Catalysts for Combustion of Gasified Biomass in Gas Turbines
(The American Society of Mechanical Engineers (ASME), 2002)There is an increasing interest in catalytic combustors fuelled by low-heating value (LHV) gases, with a LHV of 5–7 MJ/Nm3 . This is because catalytic combustion could be advantageous compared ... -
A Recuperated Gas Turbine Incorporating External Heat Sources in the Combined Gas-Steam Cycle
(The American Society of Mechanical Engineers (ASME), 2002)The recuperation by means of external waste heat sources, as opposed to the recuperation of the turbine exhaust gases (to preheat the compressed air), allows one to utilize the hot exhaust ... -
Predicting Hydrocarbon Emissions From Direct Injection Diesel Engines
(The American Society of Mechanical Engineers (ASME), 2002)Hydrocarbon (HC) emissions from direct injection (DI) diesel engines are mainly due to fuel injected and mixed beyond the lean combustion limit during ignition delay and fuel effusing from the ...