Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 6101-6120 of 9564
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Dimensional Instability Studies in Machining of Inconel 718 Nickel Based Superalloy as Applied to Aerogas Turbine Components
(The American Society of Mechanical Engineers (ASME), 2000)Inconel 718 alloy is used extensively in aerogas turbines and this alloy is most difficult to machine and highly prone to dimensional instability after machining. Such detrimental phenomenon ... -
High-Temperature Properties of SiC-Si3N4 Particle Composites
(The American Society of Mechanical Engineers (ASME), 2000)Due to promising results in literature, SiC-Si3N4 particle composites in the range 0–100 percent SiC were evaluated. Focusing on high-temperature properties, mainly Y2O3 was used as sintering ... -
Characteristics of MCrAlY Coatings Sprayed by High Velocity Oxygen-Fuel Spraying System
(The American Society of Mechanical Engineers (ASME), 2000)High velocity oxygen-fuel (HVOF) spraying system in open air has been established for producing the coatings that are extremely clean and dense. It is thought that the HVOF sprayed MCrAlY (M ... -
System Identification of Jet Engines
(The American Society of Mechanical Engineers (ASME), 2000)System identification plays an important role in advanced control systems for jet engines, in which controls are performed adaptively using data from the actual engine and the identified engine. ... -
Second-Moment Closure Model for IC Engine Flow Simulation Using Kiva Code1
(The American Society of Mechanical Engineers (ASME), 2000)The flow and turbulence in an IC engine cylinder were studied using the SSG variant of the Reynolds stress turbulence closure model. In-cylinder turbulence is characterized by strong turbulence ... -
Vaporization Cooling for Gas Turbines, the Return-Flow Cascade
(The American Society of Mechanical Engineers (ASME), 2000)A new paradigm for gas turbine design is treated, in which major elements of the hot section flow path are cooled by vaporization of a suitable two-phase coolant. This enables the blades to ... -
High Temperature Oxidation and Corrosion of Silicon-Based Non-Oxide Ceramics
(The American Society of Mechanical Engineers (ASME), 2000)The present study is focussed on the oxidation behavior of nonoxide silicon-based ceramics. Various Si3N4 and SiC ceramics were examined after long term oxidation tests (up to 5000 h) at ... -
Internal Reforming Solid Oxide Fuel Cell-Gas Turbine Combined Cycles (IRSOFC-GT): Part A—Cell Model and Cycle Thermodynamic Analysis
(The American Society of Mechanical Engineers (ASME), 2000)The aim of this work is to investigate the performance of internal reforming solid oxide fuel cell (IRSOFC) and gas turbine (GT) combined cycles. To study complex systems involving IRSOFC a ... -
Exergy Analysis of Modern Fossil-Fuel Power Plants
(The American Society of Mechanical Engineers (ASME), 2000)The definition of open cycle rational efficiency is unequivocally based on the ratio of the actual shaft work output from a power plant to the maximum work that could be obtained in a ... -
Internal Bearing Chamber Wall Heat Transfer as a Function of Operating Conditions and Chamber Geometry
(The American Society of Mechanical Engineers (ASME), 2000)Increasing efficiencies of modern aero-engines are accompanied by rising turbine inlet temperatures, pressure levels and rotational speeds. These operating conditions require a detailed knowledge ... -
Experimental Evaluation of a Metal Mesh Bearing Damper
(The American Society of Mechanical Engineers (ASME), 2000)Metal mesh is a commercially available material used in many applications including seals, heat shields, filters, gaskets, aircraft engine mounts, and vibration absorbers. This material has been ... -
Hybrid Brush Pocket Damper Seals for Turbomachinery
(The American Society of Mechanical Engineers (ASME), 2000)Pocket damper seals perform a dual function: both sealing the pressurized gas around a rotating shaft and providing large amounts of vibration damping. The annular cavity between the labyrinth ... -
1997 Soichiro Honda Lecture: Pathways to Achieving a New Generation of Engines for Personal Transportation
(The American Society of Mechanical Engineers (ASME), 2000)As we move into the twenty-first century the spread of affluence to a greater portion of an ever growing world population, coupled with dwindling reserves of crude oil, will make it imperative ... -
Conceptual Basis for a New Approach to Bladed-Disk Design
(The American Society of Mechanical Engineers (ASME), 2000)A central issue in gas turbine engine design today is the demand for higher performance, greater reliability, shorter lead times, and lower cost. The design of bladed disks (fans, compressors ... -
Experimental Measurements of Actively Controlled Bearing Damping With an Electrorheological Fluid
(The American Society of Mechanical Engineers (ASME), 2000)Selection criteria and design evaluations of several types of bearing dampers with active control for application to aircraft engines were described in a companion paper. A disk type electrorheological ... -
Channel Height Effect on Heat Transfer and Friction in a Dimpled Passage
(The American Society of Mechanical Engineers (ASME), 2000)The heat transfer enhancement in cooling passages with dimpled (concavity imprinted) surface can be effective for use in heat exchangers and various hot section components (nozzle, blade, combustor ... -
Sub-Scale Demonstration of the Active Feedback Control of Gas-Turbine Combustion Instabilities
(The American Society of Mechanical Engineers (ASME), 2000)Described are sub-scale tests that successfully demonstrate active feedback control as a means of suppressing damaging combustion oscillations in natural-gas-fueled, lean-premix combustors. The control ... -
Combustion System Damping Augmentation With Helmholtz Resonators
(The American Society of Mechanical Engineers (ASME), 2000)This paper describes an analytical and experimental investigation to enhance combustion system operability using side branch resonators. First, a simplified model of the combustion system dynamics ... -
Status of Catalytic Combustion R&D for the Department of Energy Advanced Turbine Systems Program
(The American Society of Mechanical Engineers (ASME), 2000)This paper discusses some of the advanced concepts and research and development associated with implementing catalytic combustion to achieve ultra-low-NOx emissions in the next generation of ... -
An Effective Property, LHF-Type Model for Spray Combustion
(The American Society of Mechanical Engineers (ASME), 2000)A mathematical model capable of describing the evaporation, mixing and burning characteristics of a confined reacting two-phase flow is presented. The flow field is described by solving the ...