Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 5261-5280 of 9564
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Validation of CESI Blade Life Management System by Case Histories and in situ NDT
(The American Society of Mechanical Engineers (ASME), 2006)A life management system was developed for hot components of large industrial gas turbines, in the form of a software tool for predicting component lives under typical operational transients ... -
Influence of Operating Condition and Geometry on the Oil Film Thickness in Aeroengine Bearing Chambers
(The American Society of Mechanical Engineers (ASME), 2006)Increasing the efficiency of modern jet engines does not only imply to the mainstream but also to the secondary air and oil system. Within the oil system the bearing chamber is one of the ... -
A Generic Approach for Gas Turbine Adaptive Modeling
(The American Society of Mechanical Engineers (ASME), 2006)For gas turbine engine performance analysis, a variety of simulation tools is available. In order to minimize model development and software maintenance costs, generic gas turbine system simulation ... -
Visualization of Steam Addition Effect on OH Distribution in a Flame by Isotope Shift/Planar Laser-Induced Fluorescence (IS/PLIF) Spectroscopy
(The American Society of Mechanical Engineers (ASME), 2006)Addition of steam to a flame has important implications in the combustion process. The dissociation of the added steam (e.g., H2O↔H+OH, etc.) is one of the effects that contribute to the ... -
Shapes of Elliptic Methane Laminar Jet Diffusion Flames
(The American Society of Mechanical Engineers (ASME), 2006)Buoyant and nonbuoyant shapes of methane flames issued from a 2:1 aspect ratio elliptic tube burner were measured. Nonbuoyant conditions were obtained in the KC-135 microgravity research aircraft ... -
Experimental Operating Range Extension of a Twin-Spool Turbofan Engine by Active Stability Control Measures
(The American Society of Mechanical Engineers (ASME), 2006)Modern engine operation is guided by the aim to broaden the operating range and to increase the stage loading allowing the stage count to be reduced. This is possible by active stability ... -
Effect of Developing Turbulence and Markstein Number on the Propagation of Flames in Methane-Air Premixture
(The American Society of Mechanical Engineers (ASME), 2006)In spark ignition engines, initial flame kernel is wrinkled by a progressively increasing bandwidth of turbulence length scales until eventually the size of the flame kernel is sufficient for ... -
A Comprehensive Thermodynamic Approach to Acoustic Cavitation Simulation in High-Pressure Injection Systems by a Conservative Homogeneous Two-Phase Barotropic Flow Model
(The American Society of Mechanical Engineers (ASME), 2006)A general conservative numerical model for the simulation of transmission-line unsteady fluid dynamics has been developed and applied to high-pressure injection systems. A comprehensive thermodynamic ... -
Effects of Heat Release Mode on Emissions and Efficiencies of a Compound Diesel Homogeneous Charge Compression Ignition Combustion Engine
(The American Society of Mechanical Engineers (ASME), 2006)A compound diesel homogeneous charge compression ignition (HCCI) combustion system has been developed based on the combined combustion strategies of multiple injection strategy and a mixing enhanced ... -
Contact Dynamic Response With Misalignment in a Flexible Rotor/Magnetic Bearing System
(The American Society of Mechanical Engineers (ASME), 2006)This paper investigates the vibration characteristics of rotor displacement signals in a magnetic bearing system under conditions when rotor contact with auxiliary bearings is possible. Since these ... -
Stainless Steels With Improved Oxidation Resistance for Recuperators
(The American Society of Mechanical Engineers (ASME), 2006)New materials are being evaluated to replace type 347 stainless steel in microturbine recuperators operating at higher temperatures in order to increase the efficiency of the microturbine. ... -
Study of High Load Operation Limit Expansion for Gasoline Compression Ignition Engines
(The American Society of Mechanical Engineers (ASME), 2006)In this research, combustion characteristics of gasoline compression ignition engines have been analyzed numerically and experimentally with the aim of expanding the high load operation limit. The ... -
Three-Dimensional Catalytic Regeneration Modeling of SiC Diesel Particulate Filters
(The American Society of Mechanical Engineers (ASME), 2006)Increasingly stringent diesel particulate emissions standards have reestablished international interest in diesel filters, whose first series application dates back to 1985. Modern diesel engine ... -
Quasidimensional Modeling of Direct Injection Diesel Engine Nitric Oxide, Soot, and Unburned Hydrocarbon Emissions
(The American Society of Mechanical Engineers (ASME), 2006)In this study we report the development and validation of phenomenological models for predicting direct injection (DI) diesel engine emissions, including nitric oxide (NO), soot, and unburned ... -
Post-Combustion In-Cylinder Vaporization During Cranking and Startup in a Port-Fuel–Injected Spark Ignition Engine
(The American Society of Mechanical Engineers (ASME), 2006)During port-fuel–injected (PFI) spark-ignition (SI) engine startup and warm-up fuel accounting continues to be a challenge. Excess fuel must be injected for a near stoichiometric combustion charge. ... -
Experimental Validation of an Improved Squish Velocity Model for Bowl-in-Piston Combustion Chambers
(The American Society of Mechanical Engineers (ASME), 2006)A simple two-zone mass transfer model was used to predict the mean squish velocity history at the rim of a conventional bowl-in-piston combustion chamber. The chamber’s geometry produces gas ... -
Experimental Study on Homogeneous Charge Compression Ignition Combustion With Fuel of Dimethyl Ether and Natural Gas
(The American Society of Mechanical Engineers (ASME), 2006)The homogeneous charge compression ignition (HCCI) combustion fueled by dimethyl ether (DME) and compressed natural gas (CNG) was investigated. The experimental work was carried out on a ... -
Optimal Design of Gas Turbine Cogeneration Plants in Consideration of Discreteness of Equipment Capabilities
(The American Society of Mechanical Engineers (ASME), 2006)To attain the highest economic and energy-saving characteristics of gas turbine cogeneration plants, it is necessary to rationally determine capacities and numbers of gas turbines and auxiliary ... -
Properties, Weldability, and Applications of Modern Wrought Heat-Resistant Alloys for Aerospace and Power Generation Industries
(The American Society of Mechanical Engineers (ASME), 2006)Alloy selection and alloy design both require consideration of an array of material attributes, including in-service properties, weldability, and fabricability. Critical properties of modern ... -
Gas Turbine Compressor Washing: Historical Developments, Trends and Main Design Parameters for Online Systems
(The American Society of Mechanical Engineers (ASME), 2006)By being exposed to atmospheric conditions gas turbines are inevitably subjected to sources of fouling. The resulting degradation can be partially recovered by cleaning the compressor. Based on ...