Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 5981-6000 of 9564
-
Use of an Electrically Heated Catalyst to Reduce Cold-Start Emissions in a Bi-Fuel Spark Ignited Engine
(The American Society of Mechanical Engineers (ASME), 2001)Reduction of cold-start emissions using electrically-heated catalyst (EHC) technology was the focus of this work. Comprehensive emission measurements of CO, CO2,NOx, and total hydrocarbons (THC) ... -
Simulation of a Single Cylinder Diesel Engine Under Cold Start Conditions Using Simulink
(The American Society of Mechanical Engineers (ASME), 2001)A nonlinear dynamic model is developed in this study to simulate the overall performance of a naturally aspirated, single cylinder, four-stroke, direct injection diesel engine under cold start ... -
Multiobjective Optimum Design of Rotor-Bearing Systems With Dynamic Constraints Using Immune-Genetic Algorithm
(The American Society of Mechanical Engineers (ASME), 2001)In this paper, the combined optimization algorithm (immune-genetic algorithm) is proposed for multioptimization problems by introducing the capability of the immune system to the genetic algorithm. ... -
A Study of Combustion Characteristics of Gasified Coal Fuel
(The American Society of Mechanical Engineers (ASME), 2001)The development of integrated, coal-gasification combined cycle (IGCC) systems provides cost-effective and environmentally sound options for meeting future coal-utilizing power generation needs in ... -
Vortex Generators in Lean-Premix Combustion
(The American Society of Mechanical Engineers (ASME), 2001)A novel fuel-air mixing technique on the basis of vortex generators has been developed and successfully implemented in the worlds first lean-premix reheat combustor of ABB’s GT24/GT26 series ... -
Generation of Five-Axis Cutter Paths for Turbomachinery Components
(The American Society of Mechanical Engineers (ASME), 2001)A simple, yet useful algorithm is developed to generate tool paths with global interference checking for five-axis point milling of turbomachinery components. Based on the projected distance ... -
Reconditioning of Gas Turbine Components by Heat Treatment
(The American Society of Mechanical Engineers (ASME), 2001)At the high operating temperatures experienced within a gas turbine, creep damage is a major life-limiting factor. This is especially true for components which are highly stressed and closest ... -
Entropy Production as a Predictive Performance Measure for Turbomachinery
(The American Society of Mechanical Engineers (ASME), 2001)It is proposed that consideration be given to an alternative, streamlined manner for mathematical modeling of the performance of energy conversion and transfer equipment. We make the case, here, ... -
Effects of Fuel Nozzle Displacement on Pre-Filming Airblast Atomization
(The American Society of Mechanical Engineers (ASME), 2001)In gas turbine combustors, optimum arrangement between a fuel nozzle and a swirler/prefilmer module must be sought to achieve satisfactory ignition and stability characteristics in addition to ... -
Thermodynamic Optimization of the HAT Cycle Plant Structure—Part II: Structure of the Heat Exchanger Network
(The American Society of Mechanical Engineers (ASME), 2001)In Part I of the paper a thermodynamic optimization methodology was presented for the “basic” configuration of a humid air turbine cycle plant in which the heat exchange section is viewed as ... -
Measurement Uncertainties Encountered During Gas Turbine Driven Compressor Field Testing
(The American Society of Mechanical Engineers (ASME), 2001)Field testing of gas turbine compressor packages requires the accurate determination of efficiency, capacity, head, power and fuel flow in sometimes less than ideal working environments. Nonetheless, ... -
Estimation of NOx Emissions in Thermal Power Plants Using Neural Networks
(The American Society of Mechanical Engineers (ASME), 2001)In this paper a neural network-based strategy is proposed for the estimation of the NOx emissions in thermal power plants, fed with both oil and methane fuel. A detailed analysis based on a ... -
Challenges Involved in Piston Top Ring Designs for Modern SI Engines
(The American Society of Mechanical Engineers (ASME), 2001)Driven by energy conservation and environment protection, modern SI engines are required to have higher and higher power density. Consequently, engines and engine components are becoming tighter ... -
Inlet Losses in Counterflow Wet-Cooling Towers
(The American Society of Mechanical Engineers (ASME), 2001)The inlet loss coefficients for dry, isotropically packed, circular and rectangular counterflow cooling towers are determined experimentally and empirical correlations are formulated to fit this ... -
Thermodynamic Optimization of the HAT Cycle Plant Structure—Part I: Optimization of the “Basic Plant Configuration”
(The American Society of Mechanical Engineers (ASME), 2001)A method for the thermodynamic optimization of the humid air turbine cycle plant structure is presented here. The method is based on the optimization of a “basic configuration of the plant” ... -
Biodiesel Development and Characterization for Use as a Fuel in Compression Ignition Engines
(The American Society of Mechanical Engineers (ASME), 2001)Neat vegetable oils pose some problems when subjected to prolonged usage in CI engine. These problems are attributed to high viscosity, low volatility and polyunsaturated character of the neat ... -
The Frequency Analysis of the Crankshaft’s Speed Variation: A Reliable Tool for Diesel Engine Diagnosis
(The American Society of Mechanical Engineers (ASME), 2001)The speed variation of the crankshaft may be easily and accurately measured using a shaft encoder and counting the pulses of the internal clock of the data acquisition system. If the crankshaft ... -
Detailed Chemical Kinetic Simulation of Natural Gas HCCI Combustion: Gas Composition Effects and Investigation of Control Strategies
(The American Society of Mechanical Engineers (ASME), 2001)This paper uses the HCT (hydrodynamics, chemistry and transport) chemical kinetics code to analyze natural gas combustion in an HCCI engine. The HCT code has been modified to better represent ... -
Analytical Prediction Techniques for Axisymmetric Flow in Gas Labyrinth Seals
(The American Society of Mechanical Engineers (ASME), 2001)Labyrinth seals are commonly found in turbines and compressors. Their objective is to control gas leakage from high pressure regions to low pressure regions. The correct prediction and control ... -
Engine Fuel Droplet High-Pressure Vaporization Modeling
(The American Society of Mechanical Engineers (ASME), 2001)The objective of this investigation was to characterize the high-pressure vaporization processes of engine fuels, which are too complex in composition to be described with conventional methods. ...