Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 5221-5240 of 9564
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Numerical Simulation of Liquid Jet Atomization Including Turbulence Effects
(The American Society of Mechanical Engineers (ASME), 2007)This paper describes numerical implementation and validation of a newly developed hybrid model, T-blob/T-TAB, into an existing computational fluid dynamics (CFD) program for primary and secondary ... -
Analysis of Combustion Induced Vortex Breakdown Driven Flame Flashback in a Premix Burner With Cylindrical Mixing Zone
(The American Society of Mechanical Engineers (ASME), 2007)In earlier experimental studies of the authors a previously unknown mechanism leading to flame flashback—combustion induced vortex breakdown (CIVB)—was discovered in premixed swirl burners. It ... -
The Use of Probabilistic Reasoning to Improve Least Squares Based Gas Path Diagnostics
(The American Society of Mechanical Engineers (ASME), 2007)A method is proposed to support least square type of methods for deriving health parameters from a small number of independent gas path measurements. The method derives statistical information ... -
Nonlinear Breakup Model for a Liquid Sheet Emanating From a Pressure-Swirl Atomizer
(The American Society of Mechanical Engineers (ASME), 2007)Predictions of breakup length of a liquid sheet emanating from a pressure-swirl (simplex) fuel atomizer have been carried out by computationally modeling the two-phase flow in the atomizer coupled ... -
Rotary Kiln Slow Pyrolysis for Syngas and Char Production From Biomass and Waste — Part II: Introducing Product Yields in the Energy Balance
(The American Society of Mechanical Engineers (ASME), 2007)A microscale electrically heated rotary kiln for slow pyrolysis of biomass and waste was designed and built at the University of Perugia. The reactor is connected to a wet scrubbing section, ... -
Liquid Fuel Combustion Using Heat Recirculation Through Annular Porous Media
(The American Society of Mechanical Engineers (ASME), 2007)A counter-flow annular heat recirculating burner was designed for lean prevaporized, premixed combustion. Prior to entering the combustor, the reactants are passed through a porous media-filled ... -
Ignition of Lean Methane-Based Fuel Blends at Gas Turbine Pressures
(The American Society of Mechanical Engineers (ASME), 2007)Shock-tube experiments and chemical kinetics modeling were performed to further understand the ignition and oxidation kinetics of lean methane-based fuel blends at gas turbine pressures. Such data ... -
A Generalized Fault Classification for Gas Turbine Diagnostics at Steady States and Transients
(The American Society of Mechanical Engineers (ASME), 2007)Gas turbine diagnostic techniques are often based on the recognition methods using the deviations between actual and expected thermodynamic performances. The problem is that the deviations generally ... -
Nonlinear Flame Transfer Function Characteristics in a Swirl-Stabilized Combustor
(The American Society of Mechanical Engineers (ASME), 2007)An understanding of the amplitude dependence of the flame response to acoustic excitation is required in order to predict and/or correlate combustion instability amplitudes. This paper describes ... -
Cycle Optimization and Combustion Analysis in a Low-NOx Micro-Gas Turbine
(The American Society of Mechanical Engineers (ASME), 2007)The authors discuss in this paper the potential of a method for NOx suppression from power plants based on microgas turbines. The method is based on the mild combustion concept but needs to ... -
Integrated in-Flight Fault Detection and Accommodation: A Model-Based Study
(The American Society of Mechanical Engineers (ASME), 2007)In-flight fault accommodation of safety-critical faults requires rapid detection and remediation. Indeed, for a class of safety-critical faults, detection within a millisecond range is imperative ... -
Integration of On-Line and Off-Line Diagnostic Algorithms for Aircraft Engine Health Management
(The American Society of Mechanical Engineers (ASME), 2007)This paper investigates the integration of on-line and off-line diagnostic algorithms for aircraft gas turbine engines. The on-line diagnostic algorithm is designed for in-flight fault detection. ... -
An Investigation Into the Application of Fuzzy Logic Control to Industrial Gas Turbines
(The American Society of Mechanical Engineers (ASME), 2007)This paper investigates the feasibility benefits of applying fuzzy logic control (FLC) strategies for use with industrial gas turbines. Our main objective is to investigate different designs ... -
Closure to “Discussion of ‘The Lomakin Effect in Annular Gas Seals Under Choked Flow Conditions’ ” (2007, ASME J. Eng. Gas Turbines Power, 129 , p. 1143)
(The American Society of Mechanical Engineers (ASME), 2007)The authors are grateful for this experimental validation of the negative direct static stiffness of choked annular seals. For performing our own calculations, the mentioned conditions were ... -
Discussion: “The Lomakin Effect in Annular Gas Seals Under Choked Flow Conditions” (Arghir, M., Defaye, C., and Frêne, F., 2007, ASME J. Eng. Gas Turbines Power, 129 , pp. 1028–1034)
(The American Society of Mechanical Engineers (ASME), 2007)The authors’ predictions that choked flow in an annular gas seal is likely to produce negative direct stiffness was recently borne out in tests conducted by the discussers. A smooth seal was ... -
Buoyancy-Induced Flow in Open Rotating Cavities
(The American Society of Mechanical Engineers (ASME), 2007)Buoyancy-induced flow can occur in the cavity between the co-rotating compressor disks in gas-turbine engines, where the Rayleigh numbers can be in excess of 1012. In most cases the cavity is ... -
Rotary Kiln Slow Pyrolysis for Syngas and Char Production From Biomass and Waste—Part I: Working Envelope of the Reactor
(The American Society of Mechanical Engineers (ASME), 2007)A microscale electrically heated rotary kiln for slow pyrolysis of biomass and waste was designed and built at the University of Perugia. The reactor is connected to a wet scrubbing section, ... -
The Advanced Injection Low Pilot Ignited Natural Gas Engine: A Combustion Analysis
(The American Society of Mechanical Engineers (ASME), 2006)The Advanced (injection) Low Pilot Ignited Natural Gas (ALPING) engine is proposed as an alternative to diesel and conventional dual fuel engines. Experimental results from full load operation ... -
The Development of a Dual-Injection Hydrogen-Fueled Engine With High Power and High Efficiency
(The American Society of Mechanical Engineers (ASME), 2006)To achieve high power and high efficiency in a hydrogen-fueled engine for all load conditions, the dual-injection hydrogen-fueled engine, which can derive the advantages of both high efficiency ... -
Performance Enhancement of Microturbine Engines Topped With Wave Rotors
(The American Society of Mechanical Engineers (ASME), 2006)Significant performance enhancement of microturbines is predicted by implementing various wave-rotor-topping cycles. Five different advantageous cases are considered for implementation of a four-port ...