Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 4961-4980 of 9564
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Combined Effects of Overheating and Soot-Blower Erosion on Reheater Tubing in a Gas-Fired Large Capacity Boiler
(The American Society of Mechanical Engineers (ASME), 2008)In a large capacity tangentially fired boiler, the final reheater tubing sustained abnormal oxidation and localized excessive metal wastage in a short time of the unit operation. The root causes ... -
Effect of Piston Friction on the Performance of SI Engine: A New Thermodynamic Approach
(The American Society of Mechanical Engineers (ASME), 2008)This paper presents thermodynamic analysis of piston friction in spark-ignition internal combustion engines. The general effect of piston friction on engine performance was examined during cold ... -
Development of a Torsional Behavior Powertrain Model for Multiple Misfire Detection
(The American Society of Mechanical Engineers (ASME), 2008)Many methodologies have been developed in the past for misfire detection purposes based on the analysis of the instantaneous engine speed. The missing combustion is usually detected, thanks to ... -
Fatigue Life Prediction for Large-Diameter Elastically Constrained Ball Bearings
(The American Society of Mechanical Engineers (ASME), 2008)The application of large-diameter bearing rings and the thereof inherited low stiffness make them susceptible to local distortions caused by their surrounding structures, which are often under ... -
Identification of Rotordynamic Forces in a Flexible Rotor System Using Magnetic Bearings
(The American Society of Mechanical Engineers (ASME), 2008)A method is presented for parameter identification of an annular gas seal on a flexible-rotor test rig. Dynamic loads are applied by magnetic bearings (MBs) that support the rotor. MB forces ... -
Inlet Air Cooling Applied to Combined Cycle Power Plants: Influence of Site Climate and Thermal Storage Systems
(The American Society of Mechanical Engineers (ASME), 2008)The paper presents the results of an investigation on inlet air cooling systems based on cool thermal storage, applied to combined cycle power plants. Such systems provide a significant increase ... -
New Steps to Improve Rotordynamic Stability Predictions of Centrifugal Compressors
(The American Society of Mechanical Engineers (ASME), 2008)Improved rotordynamic stability is desired by end users, and centrifugal compressor manufacturers are expected to meet, if not exceed, this expectation. Compressor manufacturers are required to ... -
Feasibility Study of an Intercooled-Cycle Marine Gas Turbine
(The American Society of Mechanical Engineers (ASME), 2008)From the perspective of an overall entity we analyzed the performance obtainable from the adoption of an intercooled-cycle gas turbine under different typical cycle parameters of a gas turbine. ... -
Robust Strategies for Forced Response Reduction of Bladed Disks Based on Large Mistuning Concept
(The American Society of Mechanical Engineers (ASME), 2008)In this paper, robust maximum forced response reduction strategies based on a “large mistuning” concept are introduced, including both (i) random and (ii) deterministic approaches. An industrial ... -
Explicit Finite Element Models of Friction Dampers in Forced Response Analysis of Bladed Disks
(The American Society of Mechanical Engineers (ASME), 2008)A generic method for analysis of nonlinear forced response for bladed disks with friction dampers of different designs has been developed. The method uses explicit finite element modeling of ... -
A Sensitivity-Based Method for Direct Stochastic Analysis of Nonlinear Forced Response for Bladed Disks With Friction Interfaces
(The American Society of Mechanical Engineers (ASME), 2008)An efficient method is developed to calculate stochastic and uncertainty characteristics of forced response for nonlinear vibrations of bladed disks with friction and gap contact interfaces. ... -
Performance Assessment of Turbocharged Pem Fuel Cell Systems for Civil Aircraft Onboard Power Production
(The American Society of Mechanical Engineers (ASME), 2008)In recent years, civil aircraft projects are showing a continuous increase in the demand of onboard electrical power, both for the partial substitution of hydraulic or pneumatic controls and ... -
An Optimal Maintenance Policy for Compressor of a Gas Turbine Power Plant
(The American Society of Mechanical Engineers (ASME), 2008)This paper proposes a condition based maintenance policy for compressors of industrial gas turbine. Compressor blade fouling contributes a major performance loss in the operation of gas turbine. ... -
Analytical Study of the Effects of the Clogging of a Mechanical Precipitator Unit in Air Preheaters in a High-Performance Thermoelectric Power Plant Based on Available Data
(The American Society of Mechanical Engineers (ASME), 2008)Following a detailed study of two of the mechanical precipitators in the air preheaters of a thermoelectric power plant, a large amount of ash that was deposited on one of the inlet conduits ... -
Time Characterization of the Anodic Loop of a Pressurized Solid Oxide Fuel Cell System
(The American Society of Mechanical Engineers (ASME), 2008)A dynamic solid oxide fuel cell (SOFC) model was integrated with other system components (i.e., reformer, anodic off-gas burner, anodic ejector) to build a system model that can simulate the ... -
A Sensor-Fault-Tolerant Diagnosis Tool Based on a Quadratic Programming Approach
(The American Society of Mechanical Engineers (ASME), 2008)Kalman filters are widely used in the turbine engine community for health monitoring purpose. This algorithm gives a good estimate of the engine condition provided that the discrepancies between ... -
Empirical Tuning of an On-Board Gas Turbine Engine Model for Real-Time Module Performance Estimation
(The American Society of Mechanical Engineers (ASME), 2008)A practical consideration for implementing a real-time on-board engine component performance tracking system is the development of high fidelity engine models capable of providing a reference level ... -
Unsteady Entropy Measurements in a High-Speed Radial Compressor
(The American Society of Mechanical Engineers (ASME), 2008)The time-dependent relative entropy field at the impeller exit of a centrifugal compressor is measured. This study is part of a broader effort to develop comprehensive measurement techniques ... -
A Wireless Microwave Telemetry Data Transfer Technique for Reciprocating and Rotating Components
(The American Society of Mechanical Engineers (ASME), 2008)Wireless microwave telemetry addresses the difficult issue of obtaining transducer outputs from reciprocating and rotating components through the use of advanced electronic components. This eliminates ... -
Reduced Reaction Mechanisms for Methane and Syngas Combustion in Gas Turbines
(The American Society of Mechanical Engineers (ASME), 2008)Two reduced reaction mechanisms were established that predict reliably for pressures up to about 20bar the heat release for different syngas mixtures including initial concentrations of methane. ...