Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 6321-6340 of 9564
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Performance and Compatibility of California Reformulated Gasoline in On-Road, Off-Road, and Non-Vehicle Engines
(The American Society of Mechanical Engineers (ASME), 1998)As part of its comprehensive program to reduce air pollution, California has mandated the use of a cleaner burning reformulated gasoline introduced in March 1996. In 1995 the Air Resources ... -
Prevention of Low-Frequency Vibration of High-Capacity Steam Turbine Units by Squeeze-Film Damper
(The American Society of Mechanical Engineers (ASME), 1998)The cause of the low-frequency vibration (subsynchronous vibration) of a high-pressure turbine was investigated by the analytical study and vibration exciting test for the actual machine in ... -
Structural Analysis of Cylinder Head Cracking in a Heavy-Duty Diesel Engine
(The American Society of Mechanical Engineers (ASME), 1998)There were fatigue cracking problems at the intake ports of a prototype heavy-duty six-cylinder head. Several proposals of design change were evaluated by finite element and reliability analysis. ... -
Toward Automatic Process Simulators: Part I—Modular Numerical Procedures
(The American Society of Mechanical Engineers (ASME), 1998)This paper presents a general design approach involving automatic, intelligent process simulation procedures. The aim is to derive a general set of design principles and methodologies that can ... -
Toward Automatic Process Simulators: Part II—An Expert System for Process Synthesis
(The American Society of Mechanical Engineers (ASME), 1998)This paper presents an explicit mapping of the conceptual activities that constitute a “process design task” into a series of well-posed, complete, and general formal simulation procedures. Part ... -
Transient Thermoelastohydrodynamic Study of Tilting-Pad Journal Bearings Under Dynamic Loading
(The American Society of Mechanical Engineers (ASME), 1998)Nowadays, tilting-pad journal bearings are submitted to more and more severe operating conditions. The aim of this work is to study the thermal and mechanical behavior of the bearing during ... -
Characterization of Contact Kinematics and Application to the Design of Wedge Dampers in Turbomachinery Blading: Part 1—Stick-Slip Contact Kinematics
(The American Society of Mechanical Engineers (ASME), 1998)Friction dampers are often used in turbine design to attenuate blade vibration to acceptable levels so as to prolong blades’ service life. A wedge damper, also called a self-centering, ... -
Aerodynamically Induced Radial Forces in a Centrifugal Gas Compressor: Part 1—Experimental Measurement
(The American Society of Mechanical Engineers (ASME), 1998)Net radial loading arising from asymmetric pressure fields in the volutes of centrifugal pumps during off-design operation is well known and has been studied extensively. In order to achieve a ... -
Imbalance Response of a Test Rotor Supported on Squeeze Film Dampers
(The American Society of Mechanical Engineers (ASME), 1998)Squeeze film dampers (SFDs) provide vibration attenuation and structural isolation to aircraft gas turbine engines which must be able to tolerate larger imbalances while operating above one or ... -
GTD111 Alloy Material Study
(The American Society of Mechanical Engineers (ASME), 1998)Very few property data on this common turbine blade alloy have been published. As longer hours of service are accumulated, maintenance considerations such as developing optimum component life ... -
Advanced Combined Cycle Alternatives With the Latest Gas Turbines
(The American Society of Mechanical Engineers (ASME), 1998)The last decade has seen remarkable improvements in industrial gas turbine size and performances. There is no doubt that the coming years are holding the promise of even more progress in these ... -
Characterization of Oscillations During Premix Gas Turbine Combustion
(The American Society of Mechanical Engineers (ASME), 1998)The use of premix combustion in stationary gas turbines can produce very low levels of Nox emissions. This benefit is widely recognized, but turbine developers routinely encounter problems with ... -
Low-Leakage Modular Regenerators for Gas-Turbine Engines
(The American Society of Mechanical Engineers (ASME), 1998)One of the significant problems plaguing regenerator designs is seal leakage resulting in a reduction of thermal efficiency. This paper describes the preliminary design and analysis of a new ... -
The Evaporative Gas Turbine [EGT] Cycle
(The American Society of Mechanical Engineers (ASME), 1998)Humidification of the flow through a gas turbine has been proposed in a variety of forms. The STIG plant involves the generation of steam by the gas turbine exhaust in a heat recovery steam ... -
Results of Experiments and Models for Predicting Stability Limits of Turbulent Swirling Flames
(The American Society of Mechanical Engineers (ASME), 1998)Swirling flames are used in many industrial applications, such as process furnaces, boilers, and gas turbines due to their excellent mixing, stability, emission, and burnout characteristics. The ... -
Sensor-Based Analyzer for Continuous Emission Monitoring in Gas Pipeline Applications
(The American Society of Mechanical Engineers (ASME), 1998)Continuous emissions monitoring of gas turbine engines in pipeline service have typically been monitored using either laboratory derived instruments (CEMS), or predicted using data from low cost ... -
Performance Deterioration Modeling in Aircraft Gas Turbine Engines
(The American Society of Mechanical Engineers (ASME), 1998)Steady-state performance models can be used to evaluate a new engine’s baseline performance. As a gas turbine accumulates operating time in the field, its performance deteriorates due to fouling, ... -
Design of a Semiclosed-Cycle Gas Turbine With Carbon Dioxide–Argon as Working Fluid
(The American Society of Mechanical Engineers (ASME), 1998)The main performance features of a semiclosed-cycle gas turbine with carbon dioxide–argon working fluid are described here. This machine is designed to employ coal synthetic gas fuel and to ... -
Characterization of NOx, N20, and CO for Lean-Premixed Combustion in a High-Pressure Jet-Stirred Reactor
(The American Society of Mechanical Engineers (ASME), 1998)A high-pressure jet-stirred reactor (HP-JSR) has been built and applied to the study of NOx and N2 o formation and CO oxidation in lean-Premixed (LPM) combustion. The measurements obtained with ... -
Developing Centrifugal Compressor Train Optimization Models for Performance Evaluation
(The American Society of Mechanical Engineers (ASME), 1998)Recent advances in numerical optimization software now allow problems arising in the evaluation of complex centrifugal compressor train performance to be solved readily by machinery users. Analyses ...