Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 5501-5520 of 9564
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Unsteady Flow Structures in Radial Swirler Fed Fuel Injectors
(The American Society of Mechanical Engineers (ASME), 2005)Many fuel injector geometries proposed for lean-premixed combustion systems involve the use of radial swirlers. At the high swirl numbers needed for flame stabilization, several complex unsteady ... -
Effect of the Specific Heat Ratio on the Aerodynamic Performance of Turbomachinery
(The American Society of Mechanical Engineers (ASME), 2005)Many gases, including carbon dioxide and argon, have been considered as alternative working fluids to air in a number of design studies for closed and semi-closed gas turbine engines. In many ... -
Optimization of Wall Cooling in Gas Turbine Combustor Through Three-Dimensional Numerical Simulation
(The American Society of Mechanical Engineers (ASME), 2005)This paper is concerned with improving the prediction reliability of CFD modeling of gas turbine combustors. CFD modeling of gas turbine combustors has recently become an important tool in the ... -
Analysis of Tangential-Against-Rotation Injection Lomakin Bearings
(The American Society of Mechanical Engineers (ASME), 2005)This work presents a thin film flow model for analyzing the static and dynamic characteristics of centered, eccentric or misaligned tangential-against-rotation injection Lomakin bearings. The Lomakin ... -
Demonstration of a Reheat Combustor for Power Production With CO2 Sequestration
(The American Society of Mechanical Engineers (ASME), 2005)Concerns about climate change have encouraged significant interest in concepts for ultralow or “zero”-emissions power generation systems. In a concept proposed by Clean Energy Systems, Inc., ... -
Comparison of Computational Fluid Dynamics and Particle Image Velocimetry Data for the Airflow in an Aeroengine Bearing Chamber
(The American Society of Mechanical Engineers (ASME), 2005)Investigations into the single-phase velocity field of a model aeroengine bearing chamber are presented. Adequately resolving the airflow field is important to subsequent computational modeling of ... -
Editorial
(The American Society of Mechanical Engineers (ASME), 2004)Power was certainly in the world’s news during the past year, 2003. The great electrical blackout of August 15, 2003 occurred in the U.S. Northeast and Midwest, and in neighboring Canada. In ... -
Characteristic and Computational Fluid Dynamics Modeling of High-Pressure Gas Jet Injection
(The American Society of Mechanical Engineers (ASME), 2004)The topic of this paper is the computational modeling of the gas injection process in a large-bore natural gas fueled engine. At high injection pressures, the overall gas injection and mixing ... -
A New Tool for Design and Certification of Aircraft Turbine Rotors
(The American Society of Mechanical Engineers (ASME), 2004)This paper summarizes recent enhancements to a probabilistic damage tolerance software code, DARWINTM, that can be used for design certification of aircraft jet engine titanium disks/rotors that ... -
Fatigue Crack Growth Life Prediction for Surface Crack Located in Stress Concentration Part Based on the Three-Dimensional Finite Element Method
(The American Society of Mechanical Engineers (ASME), 2004)Fatigue crack growth prediction methods using three-dimensional finite element analyses were investigated to improve the predictability of part-through surface crack growth life. First, a direct ... -
Experimental Investigation of SI Engine Performance Using Oxygenated Fuel
(The American Society of Mechanical Engineers (ASME), 2004)The current experimental study aims to examine the effects of using oxygenates as a replacement of lead additives in gasoline on performance of a typical SI engine. The tested oxygenates are ... -
Effect of Optimization Criteria on Direct-Injection Homegeneous Charge Compression Ignition Gasoline Engine Performance and Emissions Using Fully Automated Experiments and Microgenetic Algorithms
(The American Society of Mechanical Engineers (ASME), 2004)Homogeneous charge compression ignition (HCCI) is a new low-emission engine concept. Combustion under homogeneous, low equivalence ratio conditions results in modest temperature combustion products, ... -
Local/Global Effects of Mistuning on the Forced Response of Bladed Disks
(The American Society of Mechanical Engineers (ASME), 2004)The focus of the present investigation is on the assessment and modeling of the local (spanning only a few blades) and global (encompassing the entire disk) effects of mistuning on the forced ... -
Theory and Test Correlation for Laminate Stacking Factor Effect on Homopolar Bearing Stiffness
(The American Society of Mechanical Engineers (ASME), 2004)The effect of the laminate stacking factor on homopolar magnetic bearing performance is examined. Stacked laminates are used on the bearing rotor and in the stator. These laminate stacks have ... -
Deterministic Micro Asperities on Bearings and Seals Using a Modified LIGA Process
(The American Society of Mechanical Engineers (ASME), 2004)Deterministic micro asperities show potential for enhancement of lubrication in conformal contacts as found in many bearing and seal designs. Several manufacturing methods have been proposed for ... -
Fuel System Suitability Considerations for Industrial Gas Turbines
(The American Society of Mechanical Engineers (ASME), 2004)Industrial Gas Turbines allow operation with a wide variety of gaseous and liquid fuels. To determine the suitability for operation with a gas fuel system, various physical parameters of the ... -
Stress Redistribution for Increased Creep Life in the GE MS6001 B Second-Stage Blade
(The American Society of Mechanical Engineers (ASME), 2004)When a hot end blade for a gas turbine is designed, several failure criteria must be considered to insure reliability. The criteria include (but are not limited to) creep rupture, low-cycle ... -
Two-Dimensional Spectroscopic Observation of Nonluminous Flames in a Regenerative Industrial Furnace Using Coal Gas
(The American Society of Mechanical Engineers (ASME), 2004)Thermal and chemical characteristics of the flames obtained from an industrial size regenerative combustion furnace have been obtained spectroscopically. The combustion characteristics of diffusion ... -
Adaptive Selection of Aircraft Engine Technologies in the Presence of Risk
(The American Society of Mechanical Engineers (ASME), 2004)The objective of this paper is to describe a method for selecting optimal engine technology solution sets while simultaneously accounting for the presence of technology risk. This method uses ... -
Characterization of Ceramic Matrix Composite Fasteners Exposed in a Combustor Linear Rig Test
(The American Society of Mechanical Engineers (ASME), 2004)Combustion tests on SiC/SiC CMC components were performed in an aircraft combustion environment using the rich-burn, quick-quench, lean-burn (RQL) sector rig. SiC/SiC fasteners were used to attach ...