Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 3821-3840 of 9564
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Risk Based Assessment of Unplanned Outage Events and Costs for Combined Cycle Plants
(The American Society of Mechanical Engineers (ASME), 2013)Unexpected outages and maintenance costs reduce plant availability and can consume significant resources to restore the unit to service. This paper describes a survey and analysis of unplanned outage events for 388 ... -
An Experimental Investigation of Kerosene Droplet Breakup by Laser Induced Blast Waves
(The American Society of Mechanical Engineers (ASME), 2013)The work presented in this paper intends to deepen our understanding of the mechanisms involved in the spark ignition of liquid fuel sprays. An experimental study is presented regarding the ignition of monodisperse droplet ... -
Large Eddy Simulation Based Study of the Influence of Thermal Boundary Condition and Combustor Confinement on Premix Flame Transfer Functions
(The American Society of Mechanical Engineers (ASME), 2013)The influence of the thermal boundary condition at the combustor wall and combustor confinement on the dynamic flame response of a perfectly premixed axial swirl burner is investigated. Large eddy simulations are carried ... -
Ignition Delay Time and Laminar Flame Speed Calculations for Natural Gas/Hydrogen Blends at Elevated Pressures
(The American Society of Mechanical Engineers (ASME), 2013)Applications of natural gas and hydrogen cofiring have received increased attention in the gas turbine market, which aims at higher flexibility due to concerns over the availability of fuels. While much work has been done ... -
Development and Testing of a Low NOx Hydrogen Combustion System for Heavy Duty Gas Turbines
(The American Society of Mechanical Engineers (ASME), 2013)Interest in hydrogen as a primary fuel stream in heavyduty gas turbine engines has increased as precombustion carbon capture and sequestration (CCS) has become a viable option for integrated gasification combined cycle ... -
Laminar Flame Speed and Ignition Delay Time Data for the Kinetic Modeling of Hydrogen and Syngas Fuel Blends
(The American Society of Mechanical Engineers (ASME), 2013)Laminar flame speeds and ignition delay times have been measured for hydrogen and various compositions of H2/CO (syngas) at elevated pressures and elevated temperatures. Two constantvolume cylindrical vessels were used to ... -
Extension of Fuel Flexibility in the Siemens Dry Low Emissions SGT 300 1S to Cover a Wobbe Index Range of 15 to 49 MJ/Sm3
(The American Society of Mechanical Engineers (ASME), 2013)The extension of gas fuel flexibility in the Siemens SGT300 single shaft (SGT3001S) is reported. A successful development program has increased the capability of the Siemens Industrial Turbomachinery, Lincoln (SITL) dry ... -
A Parametric Study of Reversible Jet Fan Blades Aerodynamic Performance
(The American Society of Mechanical Engineers (ASME), 2013)This paper presents a fully reversible blade parametric design methodology. The blades are for application in jet fans that ventilate and provide emergency smoke control in road tunnels. The blade design variables are tip ... -
Parametric Analysis of Pylon Aided Fuel Injection in Scramjet Engines
(The American Society of Mechanical Engineers (ASME), 2013)The current study investigates means to increase the efficiency of fuelair mixing into supersonic flow upstream of a flame holding cavity. Previous work has shown much promise in increasing the penetration and mixing of a ... -
Knocking Suppression by Stratified Stoichiometric Mixture With Two Zone Homogeneity in a DISI Engine
(The American Society of Mechanical Engineers (ASME), 2013)Knocking is the main obstacle of increasing the compression ratio in order to improve the thermal efficiency of gasoline engines. This paper proposes a concept of a stratified stoichiometric mixture (SSM) with twozone ... -
Discussion: “Nuclear Power Plants With Closed-Cycle Helium Turbine for Industrial Energy Supply” (Bammert, K., Boehm, E., and Buende, R., 1971, ASME J. Eng. Power, 93, pp. 156–161)
(The American Society of Mechanical Engineers (ASME), 1971) -
Large Eddy Simulations of Hydrogen Oxidation at Ultra Wet Conditions in a Model Gas Turbine Combustor Applying Detailed Chemistry
(The American Society of Mechanical Engineers (ASME), 2013)Humidified gas turbines (HGT) offer the attractive possibility of increasing plant efficiency without the cost of an additional steam turbine as is the case for a combined gassteam cycle. In addition to efficiency gains, ... -
Forward Blade Sweep Applied to Low Speed Axial Fan Rotors of Controlled Vortex Design: An Overview
(The American Society of Mechanical Engineers (ASME), 2013)An overview is given on the research maintained by the author about the design aspects of threedimensional blade passage flow in lowspeed axial flow industrial fan rotors, affected by spanwise changing design blade circulation ... -
VGT and EGR Control of Common Rail Diesel Engines Using an Artificial Neural Network
(The American Society of Mechanical Engineers (ASME), 2013)In diesel engines, variable geometry turbocharger (VGT) and exhaust gas recirculation (EGR) systems are used to increase engine specific power and reduce NOx emissions, respectively. Because the dynamics of both the VGT ... -
Improving Tilting Pad Journal Bearing Predictions—Part II: Comparison of Measured and Predicted Rotor Pad Transfer Functions for a Rocker Pivot Tilting Pad Journal Bearing
(The American Society of Mechanical Engineers (ASME), 2013)As described in Part I (Wilkes et al., 2012, “Improving TiltingPad Journal Bearing Predictions—Part I: Model Development and Impact of Rotor Excited Versus Bearing Excited Impedance Coefficients,†ASME J. Eng. Gas ... -
Numerical and Experimental Investigation of the Aerodynamic Excitation of a Model Low Pressure Steam Turbine Stage Operating Under Low Volume Flow
(The American Society of Mechanical Engineers (ASME), 2013)The diversification of power generation methods within existing power networks has increased the requirement for operational flexibility of plants employing steam turbines. This has led to the situation where steam turbines ... -
Effect of Injection Timing on Combustion, NOx, Particulate Matter and Soluble Organic Fraction Composition in a 2 Stroke Tier 0+ Locomotive Engine
(The American Society of Mechanical Engineers (ASME), 2013)The effects of injection timing on combustion, NOx, PM mass and composition from a 2stroke turbocharged Tier 0+ locomotive diesel engine are investigated in this study. Results provide insight into how injection timing ... -
Numerical Simulation of a Complete Gas Turbine Engine With Wet Compression
(The American Society of Mechanical Engineers (ASME), 2013)In this paper, a thorough flow simulation of a small turbojet engine has been carried out to predict the engine performance as a result of water injected at the compressor inlet. Wet compression will not only change ... -
Application of an Industrial Sensor Coating System on a Rolls Royce Jet Engine for Temperature Detection
(The American Society of Mechanical Engineers (ASME), 2013)Thermal barrier coatings are used to reduce the actual working temperature of the high pressure turbine blade metal surface and; hence permit the engine to operate at higher more efficient temperatures. Sensor coatings are ... -
Improving Tilting Pad Journal Bearing Predictions—Part I: Model Development and Impact of Rotor Excited Versus Bearing Excited Impedance Coefficients
(The American Society of Mechanical Engineers (ASME), 2013)The floatingbearingtestrig concept was initially developed by Glienicke in 1966 and has since been used to test many tiltingpad journal bearings (TPJBs). The impedances measured during these tests have been compared to ...