Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 2141-2160 of 9564
-
Catalytic Influence of Water Vapor on Lean Blow-Off and NOx Reduction for Pressurized Swirling Syngas Flames
(The American Society of Mechanical Engineers (ASME), 2018)It has become increasingly cost-effective for the steel industry to invest in the capture of heavily carbonaceous basic oxygen furnace or converter gas, and use it to support the intensive energy demands of the integrated ... -
Modeling Strategies for Large Eddy Simulation of Lean Burn Spray Flames
(The American Society of Mechanical Engineers (ASME), 2018)Over the last years, aero-engines are progressively evolving toward design concepts that permit improvements in terms of engine safety, fuel economy, and pollutant emissions. With the aim of satisfying the strict NOx ... -
Strong Azimuthal Combustion Instabilities in a Spray Annular Chamber With Intermittent Partial Blow-Off
(The American Society of Mechanical Engineers (ASME), 2018)This article reports experiments carried out in the MICCA-spray combustor developed at EM2C laboratory. This system comprises 16 swirl spray injectors. Liquid n-heptane is injected by simplex atomizers. The combustion ... -
Real-Time Processing of Engine Acoustic Emission for Diesel Injectors Diagnostic and Recentering
(The American Society of Mechanical Engineers (ASME), 2018)Diesel engine control strategies use complex injection patterns which are designed to meet the increasing request for engine-out emissions and fuel consumption reduction. As a result of the large number of tuneable injection ... -
Turbulent Spray Combustion Modeling Using Various Kinetic Solvers and Turbulence Models
(The American Society of Mechanical Engineers (ASME), 2018)Turbulent spray combustion of n-dodecane was modeled at relevant engine conditions using two combustion models (direct integration of chemistry (DIC) and flamelet generated manifolds (FGM)) and multifidelity turbulence ... -
Optimization and Uncertainty Analysis of a Diesel Engine Operating Point Using Computational Fluid Dynamics
(The American Society of Mechanical Engineers (ASME), 2018)This study describes the use of an analytical model, constructed using sequential design of experiments (DOEs), to optimize and quantify the uncertainty of a diesel engine operating point. A genetic algorithm (GA) was also ... -
Use of the Glycerin By-Product From Biodiesel Production for Power Generation
(The American Society of Mechanical Engineers (ASME), 2018)Climate change is driving the world to investigate alternative sources of fuel. In order to address any potential economic shortfalls to biodiesel, one can look to its by-product, glycerin, as a potential revenue source. ... -
Frequency-Domain Sensitivity Analysis of Stability of Nonlinear Vibrations for High-Fidelity Models of Jointed Structures
(The American Society of Mechanical Engineers (ASME), 2018)For the analysis of essentially nonlinear vibrations, it is very important not only to determine whether the considered vibration regime is stable or unstable but also which design parameters need to be changed to make the ... -
Characterization of Limacon Gas Expanders With Consideration to the Dynamics of Apex Seals and Inlet Control Valve
(The American Society of Mechanical Engineers (ASME), 2018)Limaçon machine, of which the relative motion between the rotor and housing follows the limaçon curve, belongs to a class of rotary positive displacement machines. The profiles of rotors and housings of those machines can ... -
Design of a Wide-Range Centrifugal Compressor Stage for Supercritical CO2 Power Cycles
(The American Society of Mechanical Engineers (ASME), 2018)Supercritical carbon dioxide (sCO2) power cycles require high compressor efficiency at both the design point and over a wide operating range. Increasing the compressor efficiency and range helps maximize the power output ... -
Flow Field and Wall Temperature Measurements for Reacting Flow in a Lean Premixed Swirl Stabilized Can Combustor
(The American Society of Mechanical Engineers (ASME), 2018)In this study, we provide detailed wall heat flux measurements and flow details for reacting flow conditions in a model combustor. Heat transfer measurements inside a gas turbine combustor provide one of the most serious ... -
A Detailed Comparison on the Influence of Flow Unsteadiness Between the Vaned and Vaneless Mixed-Flow Turbocharger Turbine
(The American Society of Mechanical Engineers (ASME), 2018)A turbocharger is a key enabler for lowering CO2 emission of an internal combustion engine (ICE) through the reutilization of the exhaust gas energy that would otherwise have been released to the ambient. In its actual ... -
Impact of Adverse Environmental Conditions on Rotorcraft Operational Performance and Pollutant Emissions
(The American Society of Mechanical Engineers (ASME), 2018)It is anticipated that the contribution of rotorcraft activities to the environmental impact of civil aviation will increase in the future. Due to their versatility and robustness, helicopters are often operated in harsh ... -
Analysis for Combustion Instability and Stabilization Characteristics in a Swirled Premixed Combustor With a Slotted Plate
(The American Society of Mechanical Engineers (ASME), 2018)In this study, new methodologies are introduced to analyze combustion instability in a lab-scale swirled combustor. First, with the help of radial basis function neural network (RBFNN), the flame describing function (FDF) ... -
Fault Management System of LP-EGR Using In-Cylinder Pressure Information in Light-Duty Diesel Engines
(The American Society of Mechanical Engineers (ASME), 2018)Particulate matters (PM) accumulation through a low-pressure exhaust gas recirculation (LP-EGR) path may hinder to obtain the desired LP-EGR rate and thus causes an increase of nitrogen oxides (NOx). The degree of lack of ... -
Lateral Equilibrium Position Analysis Program With Applications to Electric Submersible Pumps
(The American Society of Mechanical Engineers (ASME), 2018) -
Considerations in Using Photometer Instruments for Measuring Total Particulate Matter Mass Concentration in Diesel Engine Exhaust
(The American Society of Mechanical Engineers (ASME), 2018)In this work, engine-out particulate matter (PM) mass emissions from an off-highway diesel engine measured using a low-cost photometer, scanning mobility particle sizer (SMPS), elemental versus organic carbon (EC/OC) ... -
Measuring Water Film Thickness in a Wet Gas Compressor Diffuser—Design, Calibration, and Testing of Electromagnetic Probes
(The American Society of Mechanical Engineers (ASME), 2018)The distribution of water in the diffuser of a wet gas compressor is not well understood. Measurements of water film thickness across the diffuser surface would improve the understanding of two-phase flow phenomena in wet ... -
Twin-Fluid Atomized Spray Combustion of Straight Vegetable Oil at Elevated Pressures
(The American Society of Mechanical Engineers (ASME), 2018)The effect of the chamber pressure on combustion of a twin-fluid-atomized spray of straight vegetable oil (VO) in a swirl stabilized combustion system is experimentally studied. A system with high pressure capabilities was ... -
Evaluation of Emissions Characteristics of Marine Diesel Engine Intake of Exhaust Gas of Lean Burn Gas Engine
(The American Society of Mechanical Engineers (ASME), 2018)The need for reductions of nitrogen oxides (NOx), sulfur oxides (SOx), and carbon dioxide (CO2) emissions has been acknowledged on the global level. However, it is difficult to meet the strengthened emissions regulations ...