Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 3561-3580 of 9564
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Experimental Study of Adiabatic Two Phase Flow in an Annular Channel Under Low Frequency Vibration
(The American Society of Mechanical Engineers (ASME), 2014)In order to investigate the possible effect of seismic vibration on twophase flow dynamics and thermalhydraulics of a nuclear reactor, experimental tests of adiabatic airwater twophase flow under lowfrequency vibration ... -
Overall Effectiveness of a Blade Endwall With Jet Impingement and Film Cooling
(The American Society of Mechanical Engineers (ASME), 2014)Everincreasing thermal loads on gas turbine components require improved cooling schemes to extend component life. Engine designers often rely on multiple thermal protection techniques, including internal cooling and external ... -
Metaheuristic Design and Optimization of Fuzzy Based Gas Turbine Engine Fuel Controller Using Hybrid Invasive Weed Optimization/Particle Swarm Optimization Algorithm
(The American Society of Mechanical Engineers (ASME), 2014)This paper presents the metaheuristic design and optimization of fuzzybased gas turbine engine (GTE) fuel flow controller by means of a hybrid invasive weed optimization/particle swarm optimization (IWO/PSO) algorithm as ... -
Large Eddy Simulation of a Bluff Body–Stabilized Flame With Close Coupled Liquid Fuel Injection
(The American Society of Mechanical Engineers (ASME), 2014)Large eddy simulations (LES) are performed of a bluffbody–stabilized flame with discrete liquid fuel injectors located just upstream of the bluffbody trailing edge in a socalled “closecoupled†configuration. Nonreacting ... -
Creep Life Prediction for Aero Gas Turbine Hot Section Component Using Artificial Neural Networks
(The American Society of Mechanical Engineers (ASME), 2014)Accurate and reliable component life prediction is crucial to ensure safety and economics of gas turbine operations. In pursuit of such improved accuracy and reliability, modelbased creep life prediction methods have become ... -
Accelerometer Based Combustion Metrics Reconstruction With Radial Basis Function Neural Network for a 9 L Diesel Engine
(The American Society of Mechanical Engineers (ASME), 2014)Accelerometerbased combustion sensing in diesel engines has the potential of providing feedback for combustion control to reduce fuel consumption and engine emissions at a lower cost than incylinder pressure sensors. In ... -
Development and Application of a Transported Probability Density Function Method on Unstructured Three Dimensional Grids for the Prediction of Nitric Oxides
(The American Society of Mechanical Engineers (ASME), 2014)The present work explores the capability of the transported probability density function (PDF) method to predict nitric oxide (NO) formation in turbulent combustion. To this end a hybrid finitevolume/Lagrangian Monte Carlo ... -
First and Second Law Analysis of Future Aircraft Engines
(The American Society of Mechanical Engineers (ASME), 2014)An optimal baseline turbofan cycle designed for a performance level expected to be available around year 2050 is established. Detailed performance data are given in takeoff, top of climb, and cruise to support the analysis. ... -
Effect of Change in Fuel Compositions and Heating Value on Ignition and Performance for Siemens SGT 400 Dry Low Emission Combustion System
(The American Society of Mechanical Engineers (ASME), 2014)The influence of changes in fuel composition and heating value on the performance of an industrial gas turbine combustor was investigated. The combustor tested was a single cannular combustor for Siemens SGT400 13.4 MW ... -
Flashback and Turbulent Flame Speed Measurements in Hydrogen/Methane Flames Stabilized by a Low Swirl Injector at Elevated Pressures and Temperatures
(The American Society of Mechanical Engineers (ASME), 2014)This paper reports flashback limits and turbulent flame local displacement speed measurements in flames stabilized by a low swirl injector operated at elevated pressures and inlet temperatures with hydrogen and methane ... -
Experimental Investigations on Diesel Engine Forced Induction and Exhaust Gas Recirculation (EGR) Using Exhaust Gas Assisted Jet Compressor
(The American Society of Mechanical Engineers (ASME), 2014)Even though the conventional method of supercharging and turbocharging of an internal combustion engine increases the engine specific power output, part of the shaft power developed by the engine is consumed by the ... -
Effect of Injection Timing on PPCI and MPCI Mode Fueled With Straight Run Naphtha
(The American Society of Mechanical Engineers (ASME), 2014)Partially premixed compression ignition (PPCI) and multiple premixed compression ignition (MPCI) mode of straightrun naphtha have been investigated under different injection strategies. The MPCI mode is realized by the ... -
Comparative Study of Diesel Oil and Biodiesel Spray Combustion Based on Detailed Chemical Mechanisms
(The American Society of Mechanical Engineers (ASME), 2014)In the present work, a semidetailed combustion mechanism for biodiesel fuel was validated against the measured autoignition delay times and subsequently implemented in the fortأ‰ cfd engine simulation package (Reaction ... -
A New Approach for the Stability Analysis of Rotors Supported by Gas Bearings
(The American Society of Mechanical Engineers (ASME), 2014)A simplified nonlinear transient analysis method for gas bearings was recently published by the authors (Hassini, M. A., and Arghir, M., 2012, “Simplified Nonlinear Transient Analysis Method for Gas Bearings,†J. ... -
Development of a Probabilistic Methodology for Predicting Hot Corrosion Fatigue Crack Growth Life of Gas Turbine Engine Disks
(The American Society of Mechanical Engineers (ASME), 2014)Advanced Nibased gas turbine disks are expected to operate at higher service temperatures in aggressive environments for longer time durations. Exposures of Nibased alloys to alkalinemetal salts and sulfur compounds at ... -
Structural Change Quantification in Rotor Systems Based on Measured Resonance and Antiresonance Frequencies
(The American Society of Mechanical Engineers (ASME), 2014)A structural change quantification methodology is proposed in which the magnitude and location of a structural alteration is identified experimentally in a rotor system. The resonance and antiresonance frequencies are ... -
Evaluation of the Effects of Carbon to Hydrogen Ratio and Sulfur Level in Fuel on Particulate Matters From Micro Gas Turbine Engine
(The American Society of Mechanical Engineers (ASME), 2014)The present work investigated the effects of fuel components on particulate matter (PM) from a natural gasfueled micro gas turbine engine. A variety of fuel compositions were prepared considering atomic ratio of hydrogen ... -
Static and Rotordynamic Characteristics for a New Hole Pattern Annular Gas Seal Design Incorporating Larger Diameter Holes
(The American Society of Mechanical Engineers (ASME), 2014)To reduce manufacturing cost and time, a new largerdiameter holepattern seal incorporating hole diameters of 12.27 mm, versus prior hole diameters of 3.175 mm has been proposed. The 12.27 mm holediameter seal had ... -
Gain Scheduled Control of Gas Turbine Engines: Stability and Verification
(The American Society of Mechanical Engineers (ASME), 2014)A stable gain scheduled controller for a gas turbine engine that drives a variable pitch propeller is developed and described. A stability proof is developed for gain scheduled closedloop system using global linearization ... -
A TERA Based Comparison of Heavy Duty Engines and Their Artificial Design Variants for Liquified Natural Gas Service
(The American Society of Mechanical Engineers (ASME), 2014)The liquefaction of natural gas is an energy intensive process and accounts for a considerable portion of the costs in the liquefied natural gas (LNG) value chain. Within this, the selection of the driver for running the ...