Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 4321-4340 of 9564
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Correlation Between Speciated Hydrocarbon Emissions and Flame Ionization Detector Response for Gasoline/Alcohol Blends
(The American Society of Mechanical Engineers (ASME), 2011)The U.S. renewable fuel standard has made it a requirement to increase the production of ethanol and advanced biofuels to 36 billion by 2022. Ethanol will be capped at 15 billion, which ... -
Experimental Investigations of Pressure Losses on the Performance of a Micro Gas Turbine System
(The American Society of Mechanical Engineers (ASME), 2011)Pressure losses between the compressor outlet and the turbine inlet are a major issue of overall efficiency and system stability for a solid oxide fuel cell/micro gas turbine (MGT) hybrid power ... -
Design and Testing of a Micromix Combustor With Recuperative Wall Cooling for a Hydrogen Fueled μ-Scale Gas Turbine
(The American Society of Mechanical Engineers (ASME), 2011)For more than 1 decade up to now, there is an ongoing interest in small gas turbines downsized to microscale. With their high energy density, they offer a great potential as a substitute ... -
A Sub-idle Compressor Characteristic Generation Method With Enhanced Physical Background
(The American Society of Mechanical Engineers (ASME), 2011)Sub-idle is a very challenging operating region as the performance of a gas turbine engine changes significantly compared with design conditions. In addition, the regulations for new and existing ... -
Investigation of Stress Assisted Grain Boundary Oxidation Cracking in MAR-M002 High Pressure Turbine Blades
(The American Society of Mechanical Engineers (ASME), 2011)Modern superalloys have enabled high pressure turbine (HPT) blades in gas turbine engines (GTE) to operate at higher temperatures. Unfortunately, the complexity of these materials can make it ... -
On the Behavior of Water Droplets When Moving Onto Blade Surface in a Wet Compression Transonic Compressor
(The American Society of Mechanical Engineers (ASME), 2011)The process of wet compression in an axial compressor is an intricate two-phase flow involving not only heat and mass transfer processes but also droplet breakup and even formation of discontinuous ... -
Instability and Chaos of a Flexible Rotor Ball Bearing System: An Investigation on the Influence of Rotating Imbalance and Bearing Clearance
(The American Society of Mechanical Engineers (ASME), 2011)In this paper, a horizontal flexible rotor supported on two deep groove ball bearings is theoretically investigated for instability and chaos. The system is biperiodically excited. The two sources ... -
Transient Pressure Loss in Compressor Station Piping Systems
(The American Society of Mechanical Engineers (ASME), 2011)“Dynamic pressure loss” is often used to describe the added loss associated with the time varying components of an unsteady flow through a piping system in centrifugal and reciprocating compressor ... -
Far-Field Noise Control in Supersonic Jets From Conical and Contoured Nozzles
(The American Society of Mechanical Engineers (ASME), 2011)Plasma actuators are used to control far-field noise in Mach 1.65 jets from contoured and conical supersonic axisymmetric nozzles (henceforth, contoured and conical jets, respectively). The contoured ... -
Unsteady Pressure Measurements With a Fast Response Cooled Probe in High Temperature Gas Turbine Environments
(The American Society of Mechanical Engineers (ASME), 2011)This paper presents the first experimental engine and test rig results obtained from a fast response cooled total pressure probe. The first objective of the probe design was to favor continuous ... -
Wet Compression Analysis Including Velocity Slip Effects
(The American Society of Mechanical Engineers (ASME), 2011)Injection of water droplets into industrial gas turbines in order to boost power output is now common practice. The intention is usually to saturate and cool the intake air, especially in hot ... -
Seven-Sensor Fast-Response Probe for Full-Scale Wind Turbine Flowfield Measurements
(The American Society of Mechanical Engineers (ASME), 2011)The unsteady wind profile in the atmospheric boundary layer upstream of a modern wind turbine is measured. The measurements are accomplished using a novel measurement approach that is comprised ... -
Modeling of the Constitutive Behavior of Inconel 718 at Intermediate Temperatures
(The American Society of Mechanical Engineers (ASME), 2011)Turbine disks are of large importance to turbine designers as they are exposed to hot environment and subjected to high loads. In order to analyze such components with respect to fatigue crack ... -
A One-Dimensional Numerical Model for the Momentum Exchange in Regenerative Pumps
(The American Society of Mechanical Engineers (ASME), 2011)The regenerative pump is a rotor-dynamic turbomachine capable of developing high heads at low flow rates and low specific speeds. In spite of their low efficiency, usually less than 50%, they ... -
A Study on Engine Health Monitoring in the Frequency Domain
(The American Society of Mechanical Engineers (ASME), 2011)Most of the techniques developed to date for module performance analysis rely on steady-state measurements from a single operating point to evaluate the level of deterioration of an engine. One ... -
Data-Driven Fault Detection in Aircraft Engines With Noisy Sensor Measurements
(The American Society of Mechanical Engineers (ASME), 2011)An inherent difficulty in sensor-data-driven fault detection is that the detection performance could be drastically reduced under sensor degradation (e.g., drift and noise). Complementary to ... -
Modeling Species Inhibition of NO Oxidation in Urea-SCR Catalysts for Diesel Engine NOx Control
(The American Society of Mechanical Engineers (ASME), 2011)Urea-selective catalytic reduction (SCR) catalysts are regarded as the leading NOx aftertreatment technology to meet the 2010 NOx emission standards for on-highway vehicles running on heavy duty ... -
Friction Factor Behavior From Flat-Plate Tests of Smooth and Hole-Pattern Roughened Surfaces With Supply Pressures up to 84 bars
(The American Society of Mechanical Engineers (ASME), 2011)A flat-plate tester was used to measure the friction factor behavior for a hole-pattern roughened surface apposed to a smooth surface. The tests were executed to characterize the friction factor ... -
Comparison of Propane and Methane Performance and Emissions in a Turbocharged Direct Injection Dual Fuel Engine
(The American Society of Mechanical Engineers (ASME), 2011)With increasingly restrictive NOx and particulate matter emissions standards, the recent discovery of new natural gas reserves, and the possibility of producing propane efficiently from biomass ... -
Validation of the Fuel Saving Potential of Downsized and Supercharged Hybrid Pneumatic Engines Using Vehicle Emulation Experiments
(The American Society of Mechanical Engineers (ASME), 2011)The pneumatic hybridization of power trains is especially effective when it is combined with strong downsizing and supercharging of spark ignited engines. This paper presents measurement results ...