Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 3381-3400 of 9564
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Validation of a Newly Developed n Heptane Reduced Chemistry and Its Application to Simulations of Ignition Quality Tester, Diesel, and HCCI Combustion
(The American Society of Mechanical Engineers (ASME), 2014)A skeletal mechanism (144 species) and a corresponding reduced mechanism (62 species) were developed on the basis of the most recent detailed nheptane mechanism by Lawrence Livermore National Laboratories (LLNL, version ... -
A Study on Measurement of Conformability of the Piston Oil Ring on the Cylinder Bore Under Engine Operating Condition by Laser Induced Fluorescence Method Using Optical Fiber
(The American Society of Mechanical Engineers (ASME), 2014)It is known that a cylinderbore shape affects engine oil consumption. This study aimed clarifying the conformability of an oilring under engine operating condition. Oil film thickness at the sliding surface of oilring rails ... -
Computational Analysis of Combustion of High and Low Cetane Fuels in a Compression Ignition Engine
(The American Society of Mechanical Engineers (ASME), 2014)Past research has shown that the combustion of low cetane fuels in compression ignition (CI) engines results in higher fuel conversion efficiencies. However, when highcetane fuels such as diesel are substituted with lowcetane ... -
Flow Control in an Aggressive Interturbine Transition Duct Using Low Profile Vortex Generators
(The American Society of Mechanical Engineers (ASME), 2014)This paper presents an experimental investigation of the flow mechanisms in an aggressive interturbine transition duct with and without lowprofile vortex generators flow control. The interturbine duct had an area ratio of ... -
Low Speed Model Testing Studies for an Exit Stage of High Pressure Compressor
(The American Society of Mechanical Engineers (ASME), 2014)This paper discusses detailed experimental studies of a lowspeed largescale axial compressor, which is typical of an exit stage of HPC. Numerous measuring techniques were performed, and detailed experimental results were ... -
Uptake Coefficients of Some Volatile Organic Compounds by Soot and Their Application in Understanding Particulate Matter Evolution in Aircraft Engine Exhaust Plumes
(The American Society of Mechanical Engineers (ASME), 2014)To assist microphysical modeling on particulate matter (PM) evolution emitted from aircraft engines, uptake coefficients of some volatile organic compounds on soot were experimentally determined in this study. The determined ... -
Modeling of a Steam Turbine Including Partial Arc Admission for Use in a Process Simulation Software Environment
(The American Society of Mechanical Engineers (ASME), 2014)A dynamic process model of a steam turbine, including partial arc admission operation, is presented. Models were made for the first stage and last stage, with the middle stages assumed to have a constant pressure ratio and ... -
Propeller Synchrophase Angle Optimization of Turboprop Driven Aircraft—An Experimental Investigation
(The American Society of Mechanical Engineers (ASME), 2014)Propeller synchrophasing is an effective way of reducing interior noise and vibration of turbopropdriven aircraft. However, synchrophasing has achieved limited success in practice for the reason that the predetermined phase ... -
Metal Temperature Correlations in Tilting Pad Journal Bearings
(The American Society of Mechanical Engineers (ASME), 2014)The predicted and measured bearing metal temperatures of tiltingpad journal bearings are examined. All bearings are a fivepad design with loadbetweenpad orientation. The two loaded pads in each bearing are instrumented ... -
Particle Image Velocimetry Measurement and Computational Fluid Dynamic Simulations of the Unsteady Flow Within a Rotating Disk Cavity
(The American Society of Mechanical Engineers (ASME), 2014)In this article a combined experimental and numerical investigation of the unsteady mixing flow of the ingestion gas and rim sealing air inside a rotating disk cavity was carried out. A new test rig was set up, and the ... -
Analysis of Multi Axial Creep–Fatigue Damage on an Outer Cylinder of a 1000 MW Supercritical Steam Turbine
(The American Society of Mechanical Engineers (ASME), 2014)A multiaxial continuum damage mechanics (CDM) model was proposed to calculate the multiaxial creep–fatigue damage of a high temperature component. A specific outer cylinder of a 1000 MW supercritical steam turbine was ... -
Aerodynamic Analysis of Steam Turbine Feed Heating Steam Extractions
(The American Society of Mechanical Engineers (ASME), 2014)Feedheating in steam turbines, the use of steam extracted from the turbine to heat the feedwater, is known to raise the plant efficiency and so is included in most steam turbine power plant designs. The steam is extracted ... -
Performance Analysis of Oil Lubricated Foil Bearing With Flexible Supported Back Spring Structure—Part I: Model Development and Numerical Investigation
(The American Society of Mechanical Engineers (ASME), 2014)A new type of multileaf oil lubricated foil bearing with flexible supported back spring structure was proposed to satisfy the requirement of high rotating velocity for turbo pump, where the rotor was submerged in the ... -
Extreme Temperature Coatings for Future Gas Turbine Engines
(The American Society of Mechanical Engineers (ASME), 2014)The National Energy Technology LaboratoryRegional University Alliance (NETLRUA) has been developing extreme temperature coating systems that consist of a diffusion barrier coating (DBC), a lowcost wet slurry bond coat, a ... -
Performance Analysis of Oil Lubricated Foil Bearing With Flexible Supported Back Spring Structure—Part II: Comparison of Predictions and Measured Test Data
(The American Society of Mechanical Engineers (ASME), 2014)As described in Part I (Zhang et al., “Performance Analysis of Oil Lubricated Foil Bearing With Flexible Supported Back Spring Structure—Part I: Model Development and Numerical Investigationâ€, ASME J. Eng. Gas Turbines ... -
Analysis of In Cylinder Turbulent Flows in a DISI Gasoline Engine With a Proper Orthogonal Decomposition Quadruple Decomposition
(The American Society of Mechanical Engineers (ASME), 2014)The proper orthogonal decomposition (POD) method is applied to analyze the particle image velocimetry (PIV) measurement data and large eddy simulation (LES) result from an incylinder turbulence flow field in a fourvalve ... -
Optimization of Aero Gas Turbine Maintenance Using Advanced Simulation and Diagnostic Methods
(The American Society of Mechanical Engineers (ASME), 2014)Engine maintenance costs are a major contributor to the direct operating costs of aircraft. Therefore, the minimization of engine maintenance costs per flighthour is a key aspect for airlines to operate successfully under ... -
Exhaust Pressure Estimation Using a Diesel Particulate Filter Mass Flow Model in a Light Duty Diesel Engine Operated With Dual Loop Exhaust Gas Recirculation and Variable Geometry Turbocharger Systems
(The American Society of Mechanical Engineers (ASME), 2014)This paper presents a novel method to estimate an exhaust pressure at 357 different steadystate engine operating conditions using a diesel particulate filter (DPF) mass flow model to precisely control the air quantity for ... -
Experimental and Modeling Study of the Effect of Manufacturing Deviations on the Flow Characteristics of Tangential Intake Port in a Diesel Engine
(The American Society of Mechanical Engineers (ASME), 2014)The intake port flow characteristics in an internal combustion engine significantly affect its power output, fuel economy, and emissions. To optimize the flow characteristics in the intake port, increasing attention has ... -
Diesel Engine Combustion Sensing Methodology Based on Vibration Analysis
(The American Society of Mechanical Engineers (ASME), 2014)The increasing request for pollutant emissions reduction spawned a great deal of research in the field of combustion control and monitoring. As a matter of fact, newly developed low temperature combustion strategies for ...