Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 3721-3740 of 9564
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Evaporative Cooling of Gas Turbine Engines
(The American Society of Mechanical Engineers (ASME), 2013)There are numerous gas turbine applications in power generation and mechanical drive service where power drop during the periods of high ambient temperature has a very detrimental effect on the production of power or process ... -
Ejector Scavenging of Bearing Chambers. A Numerical and Experimental Investigation
(The American Society of Mechanical Engineers (ASME), 2013)Oil system architecture in aero engines has remained almost the same for the last 30 years. At least one oil feed pump is responsible for distributing pressurized oil into the bearing chambers, and several scavenge pumps ... -
Modeling and Validation of a Split Cycle Clean Combustion Diesel Engine Concept
(The American Society of Mechanical Engineers (ASME), 2013)This paper is a part of the research happening at the University of Illinois at Chicago together with Caterpillar Inc. for the development and validation of a split cycle clean combustion engine (SCCCE) operating on diesel ... -
HCCI Operability Limits: The Impact of Refinery Stream Gasoline Property Variation
(The American Society of Mechanical Engineers (ASME), 2013)Homogeneous charge compression ignition (HCCI) combustion is highly dependent on incylinder thermal conditions favorable to autoignition, for a given fuel. Fuels available at the pump can differ considerably in composition ... -
Method for Determining Instantaneous Temperature at the Surface of Combustion Chamber Deposits in an HCCI Engine
(The American Society of Mechanical Engineers (ASME), 2013)Homogeneous charge compression ignition (HCCI) combustion is widely regarded as an attractive option for future high efficiency gasoline engines. HCCI combustion permits operation with a highly dilute, well mixed charge, ... -
Comparison of Nonlinear to Linear Thermoacoustic Stability Analysis of a Gas Turbine Combustion System
(The American Society of Mechanical Engineers (ASME), 2013)Gas turbines offer a high operational flexibility and a good turn down ratio to meet future requirements of power production. In this context, stable operation over a wide range and for different blends of fuel is requested. ... -
Conceptual Mean Line Design of Single and Twin Shaft Oxy Fuel Gas Turbine in a Semiclosed Oxy Fuel Combustion Combined Cycle
(The American Society of Mechanical Engineers (ASME), 2013)The aim of this study was to compare singleand twinshaft oxyfuel gas turbines in a semiclosed oxyfuel combustion combined cycle (SCOC–CC). This paper discussed the turbomachinery preliminary meanline design of oxyfuel ... -
Transient Temperature Measurements in the Contact Zone Between Brush Seals of Kevlar and Metallic Type for Bearing Chamber Sealing Using a Pyrometric Technique
(The American Society of Mechanical Engineers (ASME), 2013)For the past 25 years brush seal technologies have evolved into the aero engine designs and, more generally, into the gas turbine world, not only for sealing gas areas at different pressure levels but also for sealing ... -
Boiling Heat Transfer and Critical Heat Flux Enhancement of Upward and Downward Facing Heater in Nanofluids
(The American Society of Mechanical Engineers (ASME), 2013)Boiling heat transfer (BHT) and critical heat flux (CHF) performance were experimentally studied for saturated pool boiling of waterbased nanofluids. In present experimental works, copper heaters of 20 mm diameter with ... -
Effects of a Low Octane Gasoline Blended Fuel on Negative Valve Overlap Enabled HCCI Load Limit, Combustion Phasing and Burn Duration
(The American Society of Mechanical Engineers (ASME), 2013)Homogeneous charge compression iginition (HCCI) combustion allows for the use of fuels with octane requirements below that of sparkignited engines. A reference gasoline was compared with isooctane and a low octane blend ... -
Energy Efficiency of an Axial Fan for Various Casing Configurations
(The American Society of Mechanical Engineers (ASME), 2013)The objective of this paper is to compare the measured and predicted performances of a tubeaxial fan for several casing configurations that are commonly proposed by fan manufacturers to their clients. This work is motivated ... -
Pressure Sensitivity of HCCI Auto Ignition Temperature for Oxygenated Reference Fuels
(The American Society of Mechanical Engineers (ASME), 2013)The current research focuses on creating a homogeneous charge compression ignition (HCCI) fuel index suitable for comparing different fuels for HCCI operation. One way to characterize a fuel is to use the autoignition ... -
Lessons Learned From the Development of Courses on Gas Turbine Multidisciplinary Conceptual Design
(The American Society of Mechanical Engineers (ASME), 2013)Despite the need for highly qualified experts, multidisciplinary gas turbine conceptual design has not been a common study topic in traditional postgraduate curriculums. Although many courses on specialized topics in gas ... -
Low Temperature Combustion Optimization and Cycle by Cycle Variability Through Injection Optimization and Gas to Liquid Fuel Blend Ratio
(The American Society of Mechanical Engineers (ASME), 2013)The advent of common rail technology alongside powerful control systems capable of delivering multiple accurate fuel charges during a single engine cycle has revolutionized the level of control possible in diesel combustion. ... -
Sparse Bayesian Learning for Gas Path Diagnostics
(The American Society of Mechanical Engineers (ASME), 2013)A gas path diagnostic method based on sparse Bayesian learning is presented. Most gas path diagnostic problems present the case where there are fewer measurements than health parameters. In addition, the measurement readings ... -
Optimal Operation of a Gas Turbine Cogeneration Plant in Consideration of Equipment Minimum Up and Down Times
(The American Society of Mechanical Engineers (ASME), 2013)It has become important for operators to determine operational strategies of energy supply plants appropriately corresponding to energy demands varying with season and time from the viewpoints of economics, energy saving, ... -
Numerical Analysis of Biogas Composition Effects on Combustion Parameters and Emissions in Biogas Fueled HCCI Engines for Power Generation
(The American Society of Mechanical Engineers (ASME), 2013)This study investigates the effects of biogas composition on combustion stability for a purely biogas fueled homogeneous charge compression ignition (HCCI) engine. Biogas is one of the most promising renewable fuels for ... -
Simulation of an Intake Manifold Preheater for Cold Engine Startup
(The American Society of Mechanical Engineers (ASME), 2013)Ensuring consistent, reliable diesel engine startups in cold temperatures is of utmost importance in a number of applications. Under extreme temperatures, the use of glow plugs is complemented by intake manifold heaters. ... -
Characteristics of Deposits in Gas Turbine Combustion Chambers Using Synthetic and Conventional Jet Fuels
(The American Society of Mechanical Engineers (ASME), 2013)The synthetic fuel industry is poised to experience largescale growth and profoundly affect current aviation fuel infrastructure. New candidate technologies, such as Camelina oilderived synthetic fuel have been demonstrated ... -
Effects of Scalloping on the Mixing Mechanisms of Forced Mixers With Highly Swirling Core Flow
(The American Society of Mechanical Engineers (ASME), 2013)This paper presents a detailed experimental and computational investigation of the effects of scalloping on the mixing mechanisms of a scaled 12lobe turbofan mixer. Scalloping was achieved by eliminating approximately 70% ...