Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 4421-4440 of 9564
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Development of Local Heat Transfer Models for the Safety Assessment of High Temperature Gas-Cooled Reactor Cores—Part II: Prismatic Modular Reactors
(The American Society of Mechanical Engineers (ASME), 2010)This paper extends the work of Part I to be applicable to prismatic block fuel elements and presents a model developed for determining fuel compact and fuel block temperatures of a prismatic ... -
Condenser Tube Examination Using Acoustic Pulse Reflectometry
(The American Society of Mechanical Engineers (ASME), 2010)Acoustic pulse reflectometry (APR) has been applied extensively to tubular systems in research laboratories for purposes of measuring input impedance, bore reconstruction, and fault detection. ... -
Low Temperature Combustion Using Nitrogen Enrichment to Mitigate NOx From Large Bore Natural Gas Fueled Engines
(The American Society of Mechanical Engineers (ASME), 2010)Low temperature combustion is identified as one of the pathways to meet the mandatory ultra low NOx emissions levels set by the regulatory agencies. Exhaust gas recirculation (EGR) is a well ... -
Fuel Cell/Gas Turbine Hybrid System Control for Daily Load Profile and Ambient Condition Variation
(The American Society of Mechanical Engineers (ASME), 2010)Fuel Cell/Gas Turbine (FC/GT) hybrid technology is promising, but introduces challenges in system operation and control. For base-load applications, changes in ambient conditions perturb the system ... -
A Study in the Process Modeling of the Startup of Fuel Cell/Gas Turbine Hybrid Systems
(The American Society of Mechanical Engineers (ASME), 2010)As energy demands increase and the associated costs increase with that demand, newer energy alternatives are becoming more important to society. Although not new, fuel cell technology is taking ... -
On the Numerical Prediction of Finite Length Squeeze Film Dampers Performance With Free Air Entrainment
(The American Society of Mechanical Engineers (ASME), 2010)Squeeze film dampers (SFDs) are commonly used in turbomachinery to dampen shaft vibrations in rotor-bearing systems. The main factor deterring the success of analytical models for the prediction ... -
Controlling Journal Bearing Instability Using Active Magnetic Bearings
(The American Society of Mechanical Engineers (ASME), 2010)Journal bearings (JBs) are excellent bearings due to their large load carrying capacity and favorable damping characteristics. However, journal bearings are known to be prone to instabilities. ... -
Dynamic Analysis of Fretting-Wear in Friction Contact Interfaces
(The American Society of Mechanical Engineers (ASME), 2010)Fretting wear is a very important phenomenon occurring in bladed disks. It causes the blades to be replaced in turbomachines during their life-cycle. Methods exist to predict fretting-wear in ... -
Thermomechanical Fatigue Behavior of Bare and Coated CMSX-4
(The American Society of Mechanical Engineers (ASME), 2010)Highly cooled turbine blades undergo very high thermal gradients during rapid engine idle-max-idle cycling. Traditional isothermal fatigue data are often insufficient for predicting service lives. ... -
Numerical Analysis of the Shaft Motion in the Journal Bearing of a Gear Pump
(The American Society of Mechanical Engineers (ASME), 2010)This paper describes a numerical analysis of the dynamics of the shaft in the journal bearing of a gear pump. The modulus and direction of the load is a function of the relative position ... -
Effect of Experimental Conditions on Gas Core Length and Downward Velocity of Free Surface Vortex in Cylindrical Vessel
(The American Society of Mechanical Engineers (ASME), 2010)This paper deals with characteristics of surface vortex in a cylindrical vessel. One of the characteristics is a gas core length, which is important to estimate the onset condition of the gas ... -
Laboratory Investigations of Low-Swirl Injectors Operating With Syngases
(The American Society of Mechanical Engineers (ASME), 2010)The low-swirl injector (LSI) is a lean premixed combustion technology that has the potential for adaptation to fuel-flexible gas turbines operating on a variety of fuels. The objective of this ... -
Second Law Efficiency of the Rankine Bottoming Cycle of a Combined Cycle Power Plant
(The American Society of Mechanical Engineers (ASME), 2010)A significant portion of the new electrical generating capacity installed in the past decade has employed heavy-duty gas turbines operating in a combined cycle configuration with a steam turbine ... -
Effect of Film Cooling on Turbine Capacity
(The American Society of Mechanical Engineers (ASME), 2010)This paper describes a method that allows the effect of film cooling on the capacity of a turbine to be computed. The model is based on fundamental cooling performance parameters and is ... -
An Experimental and Modeling Study of HCCI Combustion Using n-Heptane
(The American Society of Mechanical Engineers (ASME), 2010)Homogeneous charge compression ignition (HCCI) is an advanced low-temperature combustion technology being considered for internal combustion engines due to its potential for high fuel conversion ... -
Computationally Efficient Whole-Engine Model of a Cummins 2007 Turbocharged Diesel Engine
(The American Society of Mechanical Engineers (ASME), 2010)This paper describes an accurate, flexible, and computationally efficient whole engine model incorporating a multizone, quasidimension combustion submodel for a 6.7-l six-cylinder turbocharged diesel ... -
A Convective Mass Transfer Model for Predicting Vapor Formation Within the Cooling System of an Internal Combustion Engine After Shutdown
(The American Society of Mechanical Engineers (ASME), 2010)In the usual liquid cooling system of an internal combustion engine a centrifugal pump is driven by the crankshaft and imposes a coolant flow, which transfers heat from the engine walls to ... -
Experimental Study on Effects of Nozzle Hole Geometry on Achieving Low Diesel Engine Emissions
(The American Society of Mechanical Engineers (ASME), 2010)Three injectors with different nozzle geometries were tested in a multicylinder diesel engine with a high-pressure common-rail injection system. Various injection pressures were tested along with ... -
Ceramic Gas Turbine Development: Need for a 10Year Plan
(The American Society of Mechanical Engineers (ASME), 2010)Ceramic gas turbine development that started in the 1950s has slowed considerably since most of the large-scale ceramic gas turbine development programs of the 1970s–1990s ended. While component ... -
Biodiesel as an Alternative Fuel in Siemens Dry Low Emissions Combustors: Atmospheric and High Pressure Rig Testing
(The American Society of Mechanical Engineers (ASME), 2010)Atmospheric and high pressure rig tests were conducted to investigate the feasibility of using biodiesel as an alternative fuel to power industrial gas turbines in one of the world’s leading ...