Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 4941-4960 of 9564
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An Optimal Orthogonal Decomposition Method for Kalman Filter-Based Turbofan Engine Thrust Estimation
(The American Society of Mechanical Engineers (ASME), 2008)A new linear point design technique is presented for the determination of tuning parameters that enable the optimal estimation of unmeasured engine outputs, such as thrust. The engine’s performance ... -
Effects of Tailpipe Friction on the Nonlinear Dynamics of a Thermal Pulse Combustor
(The American Society of Mechanical Engineers (ASME), 2008)The effect of tailpipe friction on the combustion dynamics inside a thermal pulse combustor has been investigated using a nonlinear model consisting of four coupled first order ordinary differential ... -
FLOX® Combustion at High Pressure With Different Fuel Compositions
(The American Society of Mechanical Engineers (ASME), 2008)In flameless oxidation (FLOX®) the combustion is distributed over a large volume by a high internal flue gas recirculation. This technology has been successfully used for many years in ... -
Fundamental Mechanism of Entropy Noise in Aero-Engines: Experimental Investigation
(The American Society of Mechanical Engineers (ASME), 2008)Entropy noise caused by combustors increases rapidly with rising Mach number in the nozzle downstream of the combustion chamber. This is experimentally shown with a dedicated test facility, in ... -
A Novel Approach to Enhance the Hydrogen Yield of Biomass Gasification Using CO2 Sorbent
(The American Society of Mechanical Engineers (ASME), 2008)Hydrogen yield of conventional biomass gasification is limited by chemical equilibrium constraints. A novel technique that has the potential to enhance the hydrogen yield by integrating the ... -
Compressor/Diffuser/Combustor Aerodynamic Interactions in Lean Module Combustors
(The American Society of Mechanical Engineers (ASME), 2008)The paper reports an experimental investigation into the possibility of increased interactions between combustor external aerodynamics and upstream components, e.g., prediffuser, compressor outlet ... -
Predicting the Performance of System for the Co-production of Fischer-Tropsch Synthetic Liquid and Power from Coal
(The American Society of Mechanical Engineers (ASME), 2008)A co-production system based on Fischer-Tropsch (FT) synthesis reactor and gas turbine was simulated and analyzed. Syngas from entrained bed coal gasification was used as feedstock of the ... -
Flame Propagation Following the Autoignition of Axisymmetric Hydrogen, Acetylene, and Normal-Heptane Plumes in Turbulent Coflows of Hot Air
(The American Society of Mechanical Engineers (ASME), 2008)Axisymmetric plumes of hydrogen, acetylene, or n-heptane were formed by the continuous injection of (pure or nitrogen-diluted) fuel into confined turbulent coflows of hot air. Autoignition and ... -
Analysis of the Pollutant Formation in the FLOX® Combustion
(The American Society of Mechanical Engineers (ASME), 2008)FLOX®, or flameless combustion is characterized by ultralow NOx emissions. Therefore the potential for its implementation in gas turbine combustors is investigated in recent research activities. ... -
Last Stage Performance Considerations in Low-Pressure Turbines of Power Plants: A Case Study
(The American Society of Mechanical Engineers (ASME), 2008)The last stage blades (LSBs) of low-pressure (LP) turbine power plants have been historically specified and designed on the basis of optimization studies by matching the turbine to the ... -
System-Level Performance Estimation of a Pulse Detonation Based Hybrid Engine
(The American Society of Mechanical Engineers (ASME), 2008)A key application for a Pulse detonation engine concept is envisioned as a hybrid engine, which replaces the combustor in a conventional gas turbine with a pulse detonation combustor (PDC). A ... -
Performance Trends of an Air-Cooled Steam Condenser Under Windy Conditions
(The American Society of Mechanical Engineers (ASME), 2008)Air-cooled steam condensers (ACSCs) are increasingly employed to reject heat in modern power plants. Unfortunately, these cooling systems become less effective under windy conditions and when ... -
Thermodynamic Performance Assessment of Gas Turbine Trigeneration System for Combined Heat Cold and Power Production
(The American Society of Mechanical Engineers (ASME), 2008)The thermodynamic performance of the combustion gas turbine trigeneration system has been studied based on first law as well as second law analysis. The effects of overall pressure ratio and ... -
A Coal-Fired Power Plant With Zero-Atmospheric Emissions
(The American Society of Mechanical Engineers (ASME), 2008)This paper presents the thermodynamic and cost analysis of a coal-based zero-atmospheric emissions electric power plant. The approach involves an oxygen-blown coal gasification unit. The resulting ... -
Deviations in Predicted Condenser Performance for Power Plants Using HEI Correction Factors: A Case Study
(The American Society of Mechanical Engineers (ASME), 2008)The Heat Exchange Institute (HEI) Standards for Steam Surface Condensers are used to design and predict the performance of condensers for power plant applications. Since their inception, the ... -
Estimating HP-IP Midspan Packing Leakage in Combined Cycles
(The American Society of Mechanical Engineers (ASME), 2008)When a turbine has combined high-pressure (HP) and intermediate-pressure (IP) sections, there is a steam flow path between the sections. In combined cycle steam turbines, this internal leakage ... -
MotoGP 2007: Criteria for Engine Optimization
(The American Society of Mechanical Engineers (ASME), 2008)The paper proposes some design criteria for the MotoGP engines, complying with the FIM 2007 Technical Regulations. Five configurations have been considered: engines with three cylinders in line ... -
Hydrogen-Enhanced Gasoline Stratified Combustion in SI-DI Engines
(The American Society of Mechanical Engineers (ASME), 2008)Experimental investigations were carried out to assess the use of hydrogen in a gasoline direct injection (GDI) engine. Injection of small amounts of hydrogen (up to 27% on energy basis) in ... -
Systematic Assessment of Rigid Internal Combustion Engine Dynamic Coupling
(The American Society of Mechanical Engineers (ASME), 2008)Accurate estimation of engine vibrations is essential in the design of new engines, engine mounts, and the vehicle frames to which they are attached. Mount force prediction has traditionally ... -
High-Temperature Air Combustion Phenomena and Its Thermodynamics
(The American Society of Mechanical Engineers (ASME), 2008)The fundamentals and thermodynamic analysis of high-temperature air combustion (HiTAC) technology is presented. The HiTAC is characterized by high temperature of combustion air having low oxygen ...