Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 5241-5260 of 9564
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Hydrogen Fueled Spark-Ignition Engines Predictive and Experimental Performance
(The American Society of Mechanical Engineers (ASME), 2006)Hydrogen is well recognized as a suitable fuel for spark-ignition engine applications that has many unique attractive features and limitations. It is a fuel that can continue potentially to ... -
Heat Transfer in Reciprocating Planar Curved Tube With Piston Cooling Application
(The American Society of Mechanical Engineers (ASME), 2006)This paper describes an experimental study of heat transfer in a reciprocating planar curved tube that simulates a cooling passage in piston. The coupled inertial, centrifugal, and reciprocating ... -
Buoyancy-Induced Flow in a Heated Rotating Cavity
(The American Society of Mechanical Engineers (ASME), 2006)Experimental measurements were made in a rotating-cavity rig with an axial throughflow of cooling air at the center of the cavity, simulating the conditions that occur between corotating compressor ... -
Understanding Royal Navy Gas Turbine Sea Water Lubricating Oil Cooler Failures When Caused by Microbial Induced Corrosion (“SRB”)
(The American Society of Mechanical Engineers (ASME), 2006)A managed program to review engine failures and take necessary preventative measures has been in place successfully in the Royal Navy since the introduction of gas turbines into service in the ... -
Modeling Oil Flows in Engine Sumps: Drop Dynamics and Wall Impact Simulation
(The American Society of Mechanical Engineers (ASME), 2006)A computational preliminary design tool has been developed to help simulate drop-related processes that take place in an oil sump of a gas turbine engine accounting for drop motion, deformation, ... -
Reduction of Power Losses in Bearing Chambers Using Porous Screens Surrounding a Ball Bearing
(The American Society of Mechanical Engineers (ASME), 2006)Trends in aircraft engine design have caused an increase in mechanical stress requirements for rolling bearings. Consequently, a high amount of heat is rejected, which results in high oil ... -
A Continuum Damage Mechanics Model on Creep Rupture Life Assessment of a Steam Turbine Rotor
(The American Society of Mechanical Engineers (ASME), 2006)A nonlinear continuum damage mechanics model is proposed to assess the high temperature creep life of a steam turbine rotor, in which the effect of mean stress is taken into account and the ... -
Hot Corrosion of Lanthanum Zirconate and Partially Stabilized Zirconia Thermal Barrier Coatings
(The American Society of Mechanical Engineers (ASME), 2006)The hot corrosion resistance of lanthanum zirconate and 8wt.% yttria-stabilized zirconia coatings produced by thermal spraying for use as thermal barriers on industrial gas turbines or in aerospace ... -
Influence of High Fogging Systems on Gas Turbine Engine Operation and Performance
(The American Society of Mechanical Engineers (ASME), 2006)High fogging is a power augmentation device where water is sprayed upstream of the compressor inlet with higher mass flow than that which would be needed to saturate the intake air. The main ... -
Adjoint Harmonic Sensitivities for Forced Response Minimization
(The American Society of Mechanical Engineers (ASME), 2006)This paper presents an adjoint analysis for three-dimensional unsteady viscous flows aimed at the calculation of linear worksum sensitivities involved in turbomachinery forced response predictions. ... -
Flow Characteristics and Stability Analysis of Variable-Density Rotating Flows in Compressor-Disk Cavities
(The American Society of Mechanical Engineers (ASME), 2006)Previous heat transfer experiments showed that significant differences in the flow and heat transfer characteristics can occur in models of aircraft gas-turbine, high-compressor drums. Experiments ... -
A Numerical Model for Oil Film Flow in an Aeroengine Bearing Chamber and Comparison to Experimental Data
(The American Society of Mechanical Engineers (ASME), 2006)The work presented forms part of an ongoing investigation, focusing on modeling the motion of a wall oil film present in a bearing chamber and comparison to existing experimental data. The ... -
Unsteady Aerodynamics of an Aeroengine Double Swirler Lean Premixing Prevaporizing Burner
(The American Society of Mechanical Engineers (ASME), 2006)Lean premixing prevaporizing (LPP) burners represent a promising solution for low-emission combustion in aeroengines. Since lean premixed combustion suffers from pressure and heat release fluctuations ... -
Towards Modeling Lean Blow Out in Gas Turbine Flameholder Applications
(The American Society of Mechanical Engineers (ASME), 2006)The objective of this study was to assess the accuracy of the large-eddy simulation (LES) methodology, with a simple combustion closure based on equilibrium chemistry, for simulating turbulent ... -
An Integrated Fault Diagnostics Model Using Genetic Algorithm and Neural Networks
(The American Society of Mechanical Engineers (ASME), 2006)This paper presents the development of an integrated fault diagnostics model for identifying shifts in component performance and sensor faults using the Genetic Algorithm and Artificial Neural ... -
Assessment of the Effectiveness of Gas Path Diagnostic Schemes
(The American Society of Mechanical Engineers (ASME), 2006)A variety of methods can be used for the diagnosis of faults in gas path components of gas turbines. Problems that are common for diagnostic method implementation are the choice of measured ... -
Bayesian Network Approach for Gas Path Fault Diagnosis
(The American Society of Mechanical Engineers (ASME), 2006)A method for solving the gas path analysis problem of jet engine diagnostics based on a probabilistic approach is presented. The method is materialized through the use of a Bayesian Belief ... -
Component Map Generation of a Gas Turbine Using Genetic Algorithms
(The American Society of Mechanical Engineers (ASME), 2006)In order to estimate the precise performance of the existing gas turbine engine, the component maps with more realistic performance characteristics are needed. Because the component maps are the ... -
Proposal and Analysis of a Novel Zero CO2 Emission Cycle With Liquid Natural Gas Cryogenic Exergy Utilization
(The American Society of Mechanical Engineers (ASME), 2006)A novel liquefied natural gas (LNG) fueled power plant is proposed, which has virtually zero CO2 and other emissions and a high efficiency. Natural gas is fired in highly enriched oxygen and ... -
The Effect of Water Injection on Multispool Gas Turbine Behavior
(The American Society of Mechanical Engineers (ASME), 2006)Background: The injection of water droplets into industrial gas turbines is now commonplace and is central to several proposed advanced cycles. These cycles benefit from the subsequent reduction ...