Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 5041-5060 of 9564
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Technology Options for Gas Turbine Power Generation With Reduced CO2 Emission
(The American Society of Mechanical Engineers (ASME), 2008)ALSTOM Power R&D laboratories run various programs aimed at finding options that reduce or avoid CO2 emissions through the following: (a) high efficiency power generation equipment to utilize ... -
A Comparison of Two Trending Strategies for Gas Turbine Performance Prediction
(The American Society of Mechanical Engineers (ASME), 2008)Complex multidomain dynamic systems demand reliable health monitoring to minimize breakdowns and downtime, thereby enabling cost savings and increased operator safety. Diagnostic and prognostic ... -
Effects of Inlet Flow Distortion on the Performance of Aircraft Gas Turbines
(The American Society of Mechanical Engineers (ASME), 2008)This paper describes how the fundamental effects of inlet flow distortion on the performance of gas turbines can be evaluated with any engine performance program that employs an integrated ... -
Multidimensional Load Estimation Algorithms That Enable Performance Analysis of Industrial Gas Turbines Without A Priori Information
(The American Society of Mechanical Engineers (ASME), 2008)Performance analysis and diagnosis for gas turbines usually assume the use of detailed design specifications or similar kinds of information for building and configuring engine models. This allows ... -
Performance of a Novel Combined Cooling and Power Gas Turbine With Water Harvesting
(The American Society of Mechanical Engineers (ASME), 2008)A thermodynamic design-point performance analysis is performed on a novel cooling and power cycle that combines a semiclosed cycle gas turbine called the high-pressure regenerative turbine engine ... -
Oxidation of Natural Gas, Natural Gas/Syngas Mixtures, and Effect of Burnt Gas Recirculation: Experimental and Detailed Kinetic Modeling
(The American Society of Mechanical Engineers (ASME), 2008)The oxidation of methane-based fuels was studied experimentally in a fused-silica jet-stirred reactor (JSR) operating at 1–10atm, over the temperature range of 900–1450K, from fuel-lean to fuel-rich ... -
A New Acoustic Model for Valveless Pulsejets and Its Application to Optimization Thrust
(The American Society of Mechanical Engineers (ASME), 2008)Due to its simplicity, the valveless pulsejet may be an ideal low cost propulsion system. In this paper, a new acoustic model is described, which can accurately predict the operating frequency ... -
Unsteady Heat Transfer Measurements from Transonic Turbine Blades at Engine Representative Conditions in a Transient Facility
(The American Society of Mechanical Engineers (ASME), 2008)The unsteady heat transfer measurements about a transonic turbine blade at engine representative Mach and Reynolds numbers are presented. High density, fast-response thin film gauges are employed ... -
Data Visualization, Data Reduction and Classifier Fusion for Intelligent Fault Diagnosis in Gas Turbine Engines
(The American Society of Mechanical Engineers (ASME), 2008)In this paper, we investigate four key issues associated with data-driven approaches for fault classification using the Pratt and Whitney commercial dual-spool turbofan engine data as a test ... -
Modeling the Effects of Variable Intake Valve Timing on Diesel HCCI Combustion at Varying Load, Speed, and Boost Pressures
(The American Society of Mechanical Engineers (ASME), 2008)Homogeneous charge compression ignition (HCCI) operated engines have the potential to provide the efficiency of a typical diesel engine, with very low NOx and particulate matter emissions. However, ... -
Characterization of Particulate Matter Emissions From a Four-Stroke, Lean-Burn, Natural Gas Engine
(The American Society of Mechanical Engineers (ASME), 2008)Regulatory agencies are becoming increasingly concerned with particulate emissions as the health and environmental effects are becoming better understood. While much research has been performed on ... -
A Comparison Between Combustion Phase Indicators for Optimal Spark Timing
(The American Society of Mechanical Engineers (ASME), 2008)The closed-loop control of internal combustion engine spark timing may be accomplished by means of a combustion phase indicator, i.e., a parameter, derived from in-cylinder pressure analysis, ... -
A Numerical Study on the Effect of Water Addition on NO Formation in Counterflow CH4/Air Premixed Flames
(The American Society of Mechanical Engineers (ASME), 2008)The effect of water addition on NO formation in counterflow CH4 /air premixed flames was investigated by numerical simulation. Detailed chemistry and complex thermal and transport properties were ... -
Characteristics of Particulate Emissions of Compression Ignition Engine Fueled With Biodiesel Derived From Soybean
(The American Society of Mechanical Engineers (ASME), 2008)An experimental investigation was performed on the effect of engine speed, exhaust gas recirculation (EGR), and boosting intake pressure on the particulate size distribution and exhaust gas ... -
An Imaging Study of Compression Ignition Phenomena of Iso-Octane, Indolene, and Gasoline Fuels in a Single-Cylinder Research Engine
(The American Society of Mechanical Engineers (ASME), 2008)High-speed imaging combined with the optical access provided by a research engine offer the ability to directly image and compare ignition and combustion phenomena of various fuels. Such data ... -
A Numerical Study on the Effect of CO Addition on Flame Temperature and NO Formation in Counterflow CH4/Air Diffusion Flames
(The American Society of Mechanical Engineers (ASME), 2008)A numerical study was carried out to understand the effect of CO enrichment on flame temperature and NO formation in counterflow CH4/air diffusion flames. The results indicate that when CO is ... -
Optimization of the Flow in the Catalytic Converter of Internal Combustion Engines by Means of Screens
(The American Society of Mechanical Engineers (ASME), 2008)The flow in the automotive catalytic converter is, in general, not uniform. This significantly affects cost, service life, and performance, in particular, during cold startup. The current paper ... -
Experimental Blowout Limits and Computational Flow Field of Axial Single and Multijet Flames
(The American Society of Mechanical Engineers (ASME), 2008)Measurements of the lean blowout equivalence ratio (Φoverall,b) along with the numerical simulations of flame structure and dynamics of the flow field for coaxial burner configurations are reported. ... -
Results From an Engine Cycle Simulation of Compression Ratio and Expansion Ratio Effects on Engine Performance
(The American Society of Mechanical Engineers (ASME), 2008)This investigation quantified the effects of compression ratio (CR) and expansion ratio (ER) on performance, efficiency, and second law parameters for an automotive, spark-ignition engine. The ... -
A Study of the Transition Between Lean Conventional Diesel Combustion and Lean, Premixed, Low-Temperature Diesel Combustion
(The American Society of Mechanical Engineers (ASME), 2008)New diesel combustion modes face difficult challenges with respect to engine-out emissions and transient behavior. Transitions between lean conventional diesel combustion and lean, premixed, ...