Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 2961-2980 of 9564
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Independent Effects of Surface and Gas Temperature on Coal Fly Ash Deposition in Gas Turbines at Temperatures up to 1400 آ°C
(The American Society of Mechanical Engineers (ASME), 2016)Deposition of coal fly ash in gas turbines has been studied to support the concept of integrated gasification combined cycle (IGCC). Although particle filters are used in IGCC, small amounts of ash particles less than ... -
One Dimensional Flow Adaptive Measurement Grid Algorithm for Pneumatic Probe Measurements
(The American Society of Mechanical Engineers (ASME), 2016)The subject of this paper is an algorithm for a flowadaptive measurement grid developed for pneumatic probe measurements in steady flow fields. The performance of the algorithm is demonstrated by a circumferential traverse ... -
Further Experiments and Investigations for Discharge Coefficient of PTC 6 Flow Nozzle in a Wide Range of Reynolds Number
(The American Society of Mechanical Engineers (ASME), 2016)The discharge coefficients of the flow nozzles based on ASME PTC 6 are measured in a wide range of Reynolds number from Red = 5.8 أ— 104 to Red = 1.4 أ— 107, and the equations of the discharge coefficients ... -
Adiabatic Effectiveness and Flow Field Measurements in a Realistic Effusion Cooled Lean Burn Combustor
(The American Society of Mechanical Engineers (ASME), 2016)Over the last ten years, there have been significant technological advances toward the reduction of NOx emissions from civil aircraft engines, strongly aimed at meeting stricter and stricter legislation requirements. ... -
First and Second Law Analysis of Intercooled Turbofan Engine
(The American Society of Mechanical Engineers (ASME), 2016)Although the benefits of intercooling for aeroengine applications have been realized and discussed in many publications, quantitative details are still relatively limited. In order to strengthen the understanding of ... -
Theoretical Model to Determine Effect of Ingress on Turbine Disks
(The American Society of Mechanical Engineers (ASME), 2016)Sealing air is used in gas turbines to reduce the amount of hot gas that is ingested through the rim seals into the wheelspace between the turbine disk and its adjacent stationary casing. The sealing air attaches itself ... -
A New Method for Predicting Critical Speeds in Rotordynamics
(The American Society of Mechanical Engineers (ASME), 2016)The prediction of critical speeds of a rotating shaft is a crucial issue in a variety of industrial applications ranging from turbomachinery to disk storage systems. The modeling and analysis of rotordynamic systems is ... -
Multi angular Flame Measurements and Analysis in a Supersonic Wind Tunnel Using Fiber Based Endoscopes
(The American Society of Mechanical Engineers (ASME), 2016)This paper reports new measurements and analysis made in the Research Cell 19 supersonic windtunnel facility housed at the Air Force Research Laboratory. The measurements include planar chemiluminescence from multiple ... -
Effects of Flow Distortions as They Occur in S Duct Inlets on the Performance and Stability of a Jet Engine
(The American Society of Mechanical Engineers (ASME), 2016)One of the research areas at the Institute of Jet Propulsion focuses on the design and optimization of sshaped engine inlet configurations. The distortion being evoked within such inlet ducts should be limited to ensure ... -
Creep in Interlaminar Shear of an Oxide/Oxide Ceramic Matrix Composite at Elevated Temperature1
(The American Society of Mechanical Engineers (ASME), 2016)Creep behavior in interlaminar shear of an oxide–oxide ceramic composite was evaluated at 1100 آ°C in laboratory air and in steam environment. The composite (N720/AS) consists of a porous aluminosilicate matrix reinforced ... -
Optimal Operation and Maintenance of Gas Compressor Stations: An Integrated Framework Applied to a Large Scale Industrial Case
(The American Society of Mechanical Engineers (ASME), 2016)This paper presents a framework which integrates maintenance and optimal operation of multiple compressors. The outcome of this framework is a multiperiod plan which provides the schedule of the operation of compressors: ... -
The Dynamic Delivery Rate and the Hydraulic Similarity of Injection Pumps for High-Speed Engines
(The American Society of Mechanical Engineers (ASME), 1972) -
The Ultrahigh Efficiency Gas Turbine Engine With Stator Internal Combustion
(The American Society of Mechanical Engineers (ASME), 2016)The current article introduces a physicsbased revolutionary technology that enables energy efficiency and environmental compatibility goals of future generation aircraft and power generation gas turbines (GTs). An ultrahigh ... -
Dual Drive Booster for a Two Spool Turbofan: Performance Effects and Mechanical Feasibility
(The American Society of Mechanical Engineers (ASME), 2016)A novel twospool turbofan engine configuration is described which uses a booster powered by both the low an high pressure spools. Design and offdesign performance analysis shows the operating characteristics of the ... -
A Shape Memory Alloy Based Morphing Axial Fan Blade—Part I: Blade Structure Design and Functional Characterization
(The American Society of Mechanical Engineers (ASME), 2016)The possibility to realize adaptive structures is of great interest in turbomachinery design, owing to the benefits related to enhanced performance and efficiency. To accomplish this, a challenging approach is the employment ... -
An Experimental and Numerical Assessment of Airfoil Polars for Use in Darrieus Wind Turbines—Part II: Post stall Data Extrapolation Methods
(The American Society of Mechanical Engineers (ASME), 2016)Accurate poststall airfoil data extending to a full range of incidences between −180 deg and +180 deg are important to the analysis of Darrieus verticalaxis wind turbines (VAWTs), since the blades experience a wide ... -
An Experimental and Numerical Assessment of Airfoil Polars for Use in Darrieus Wind Turbines—Part I: Flow Curvature Effects
(The American Society of Mechanical Engineers (ASME), 2016)A better comprehension of the aerodynamic behavior of rotating airfoils in Darrieus verticalaxis wind turbines (VAWTs) is crucial both for the further development of these machines and for improvement of conventional design ... -
Prediction of Auto Ignition Temperatures and Delays for Gas Turbine Applications
(The American Society of Mechanical Engineers (ASME), 2016)Gas turbines burn a large variety of gaseous fuels under elevated pressure and temperature conditions. During transient operations, variable gas/air mixtures are involved in the gas piping system. In order to predict the ... -
Recoverable Versus Unrecoverable Degradations of Gas Turbines Employed in Five Natural Gas Compressor Stations
(The American Society of Mechanical Engineers (ASME), 2016)Gas turbines (GT), like other prime movers, experience wear and tear over time, resulting in decreases in available power and efficiency. Further decreases in power and efficiency can result from erosion and fouling caused ... -
Fatigue and Strength Studies of Titanium 6Al–4V Fabricated by Direct Metal Laser Sintering
(The American Society of Mechanical Engineers (ASME), 2016)Vibratory bending fatigue behavior of titanium 6Al–4V plate specimens manufactured via direct metal laser sintering (DMLS), powder bed fusion additive manufacturing (AM), is assessed. Motivation for the work is based on ...