Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 4401-4420 of 9564
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On Comparative Performance Testing of Prechamber and Open Chamber Laser Ignition
(The American Society of Mechanical Engineers (ASME), 2011)Laser ignition is a potential ignition technology to achieve reliable lean burn ignition in high brake mean effective pressure (BMEP) internal combustion engines. The technology has the potential ... -
Effect of Load Level on the Performance of a Dual Fuel Compression Ignition Engine Operating on Syngas Fuels With Varying H2 /CO Content
(The American Society of Mechanical Engineers (ASME), 2011)Syngas, an environmentally friendly alternative gaseous fuel for internal combustion engine operation, mainly consists of carbon monoxide (CO) and hydrogen (H2 ). It can substitute fossil diesel ... -
Dynamic Loading on Turbofan Blades Due to Bird-Strike
(The American Society of Mechanical Engineers (ASME), 2011)In the present paper, a hydrodynamic bird material model made up of water and air mixture is developed, which produces good correlation with the measured strain-gauge test data in a panel ... -
Metal Mesh Foil Bearing: Effect of Motion Amplitude, Rotor Speed, Static Load, and Excitation Frequency on Force Coefficients
(The American Society of Mechanical Engineers (ASME), 2011)Metal mesh foil bearings (MMFBs), simple to construct and inexpensive, are a promising bearing technology for oil-free microturbomachinery operating at high speed and high temperature. Prior ... -
Experimental and Analytical Investigation of High Speed Turbocharger Ball Bearings
(The American Society of Mechanical Engineers (ASME), 2011)The objectives of this investigation were to design and construct a high speed turbocharger test rig (TTR) to measure dynamics of angular contact ball bearing rotor system, and to develop a ... -
A Fast Influence Coefficient Method for Aerodynamically Mistuned Disks Aeroelasticity Analysis
(The American Society of Mechanical Engineers (ASME), 2011)The blade geometric variations are usually ignored in the prediction of bladed disk aerodynamic damping values. This situation is the result of the high computational cost associated with the ... -
Constrained Sparse Estimation for Improved Fault Isolation
(The American Society of Mechanical Engineers (ASME), 2011)Least-squares-based methods are very popular in the jet engine community for health monitoring purpose. Their isolation capability can be improved by using a prior knowledge on the health ... -
Experimental and Numerical Study of NOx Formation From the Lean Premixed Combustion of CH4 Mixed With CO2 and N2
(The American Society of Mechanical Engineers (ASME), 2011)This paper describes an experimental and numerical study of the emission of nitrogen oxides (NOx ) from the lean premixed (LPM) combustion of gaseous fuel alternatives to typical pipeline natural ... -
Experimental Analysis of Soot Formation and Oxidation in a Gas Turbine Model Combustor Using Laser Diagnostics
(The American Society of Mechanical Engineers (ASME), 2011)Sooting ethylene/air flames were investigated experimentally in a dual swirl gas turbine model combustor with good optical access at atmospheric pressure. The goals of the investigations were a ... -
A Computationally Efficient Methodology for Generating Training Data for a Transient Neural Network of a Tip-Jet Reaction Drive System
(The American Society of Mechanical Engineers (ASME), 2011)This paper presents a computationally efficient methodology for generating training data for a transient neural network model of a tip-jet reaction drive system for potential use as an onboard ... -
Combustor Design Optimization Using Co-Kriging of Steady and Unsteady Turbulent Combustion
(The American Society of Mechanical Engineers (ASME), 2011)In the gas turbine industry, computational fluid dynamics (CFD) simulations are often used to predict and visualize the complex reacting flow dynamics, combustion environment and emissions performance ... -
Mechanical Properties of Titania-Doped Yttria Stabilized Zirconia (TiYSZ) for Use as Thermal Barrier Coating (TBC)
(The American Society of Mechanical Engineers (ASME), 2011)Representative samples of yttria stabilized zirconia (7YSZ) co-doped with varying concentrations of TiO2 were fabricated using plasma spraying. Samples were sintered in order to minimize porosity ... -
Spring Stiffness Selection Criteria for Nozzle Check Valves Employed in Compressor Stations
(The American Society of Mechanical Engineers (ASME), 2011)Nozzle type check valves are often employed in compressor stations in three locations: compressor outlet, station discharge, and station bypass. The fundamental design concept of these valves is ... -
CFD Optimization of Gas-Side Flow Channel Configuration Inside a High Temperature Bayonet Tube Heat Exchanger With Inner and Outer fins
(The American Society of Mechanical Engineers (ASME), 2011)In this paper, the gas-side fluid flow distribution inside a bayonet tube heat exchanger with inner and outer fins is numerically studied. The heat exchanger is designed based on the traditional ... -
Determination of the Heat Release Distribution in Turbulent Flames by a Model Based Correction of OH* Chemiluminescence
(The American Society of Mechanical Engineers (ASME), 2011)Imaging of OH* or CH* chemiluminescence with intensified cameras is often employed for the determination of heat release in premixed flames. Proportionality is commonly assumed, but in the ... -
High Temperature Interaction Between UO2 and Carbon: Application to TRISO Particles for Very High Temperature Reactors
(The American Society of Mechanical Engineers (ASME), 2010)For very high temperature reactors, the high level operating temperature of the fuel materials in normal and accidental conditions requires studying the possible chemical interaction between the ... -
Mining Process and Product Information From Pressure Fluctuations Within a Fuel Particle Coater
(The American Society of Mechanical Engineers (ASME), 2010)The next generation nuclear power/advanced gas reactor (NGNP/AGR) fuel development and qualification program included the design, installation, and testing of a 6-in. diameter nuclear fuel particle ... -
Development of Local Heat Transfer Models for Safety Assessment of High Temperature Gas-Cooled Reactor Cores—Part I: Pebble Bed Reactors
(The American Society of Mechanical Engineers (ASME), 2010)This and the subsequent paper present models developed for determining fuel particle and fuel element temperatures in normal operation and transient conditions in high temperature reactor cores. ... -
Creep Effects on Design Below the Temperature Limits of ASME Section III Subsection NB
(The American Society of Mechanical Engineers (ASME), 2010)Some recent studies of material response have identified an issue that crosses over and blurs the boundary between ASME Boiler and Pressure Vessel Code Section III Subsection NB and Subsection ... -
Advanced High Temperature Gas-Cooled Reactor Systems
(The American Society of Mechanical Engineers (ASME), 2010)Three systems have been proposed for advanced high-temperature gas-cooled reactors: a supercritical carbon dioxide (S-CO2) gas turbine power conversion system, a new microchannel heat exchanger ...