Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 2241-2260 of 9564
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Experimental and Numerical Investigation of the Mechanical and Aerodynamic Particle Size Effect in High-Speed Erosive Flows
(The American Society of Mechanical Engineers (ASME), 2018)Aircraft engines are subject to deterioration due to solid particle erosion. The environmental particulates encountered in service often feature broad particle size distributions and a generally large scatter of particle ... -
High-Speed Shadowgraphy Measurements of an Erosive Particle-Laden Jet Under High-Pressure Compressor Conditions
(The American Society of Mechanical Engineers (ASME), 2018)Erosive damage done to jet engine compressor blading by solid particles has a negative influence on the compressor aerodynamic properties and hence decreases performance. The erosive change of shape has been investigated ... -
Dynamics Analysis of the Triangular Rotary Engine Structures
(The American Society of Mechanical Engineers (ASME), 2018)A triangular rotary engine includes several main components such as an eccentric shaft, a sun gear, a triangular rotor, a chamber, and apex seals. This study constructs the mathematical models for the chamber and triangular ... -
Budgets of Disturbances Energy for Nozzle Flows at Subsonic and Choked Regimes
(The American Society of Mechanical Engineers (ASME), 2018)The noise generated by the passage of acoustic and entropy perturbations through subsonic and choked nozzle flows is investigated numerically using an energetic approach. Low-order models are used to reproduce the experimental ... -
Nonuniform Jet Array Impingement on a Curved Surface
(The American Society of Mechanical Engineers (ASME), 2018)Experiments to investigate the effect of varying jet hole diameter and jet spacing on heat transfer and pressure loss from jet array impingement on a curved target surface are reported. The jet plate configurations studied ... -
Influence of the Position of Oil Drain Holes of a Piston on Lubricating Oil Consumption
(The American Society of Mechanical Engineers (ASME), 2018)An increase in lubricating oil consumption in a gasoline engine causes an increase in particulate matters in exhaust gases, poisoning the catalyst after treatment devices, abnormal combustion in a turbo-charged gasoline ... -
Analysis of Operational Strategies of a SOFC/Micro Gas Turbine Hybrid Power Plant
(The American Society of Mechanical Engineers (ASME), 2018)The present work deals with the analysis of operational concepts for a solid oxide fuel cell/micro gas turbine (SOFC/MGT) hybrid power plant based on a test rig at the DLR, Institute of Combustion Technology. Here, a Turbec ... -
Boundary Layer Flashback in Premixed Hydrogen–Air Flames With Acoustic Excitation
(The American Society of Mechanical Engineers (ASME), 2018)Lean premixed combustion is prevailing in gas turbines to minimize nitrogen oxide emissions. However, this technology bears the risk of flame flashback and thermoacoustic instabilities. Thermoacoustic instabilities induce ... -
Static Performance Characteristics and Rotordynamic Coefficients for a Four-Pad Ball-in-Socket Tilting Pad Journal Bearing
(The American Society of Mechanical Engineers (ASME), 2018)The following erratum has been written to alert readers to unreliable data contained in the referenced paper. -
The Effect of Stratification Ratio on the Macrostructure of Stratified Swirl Flames: Experimental and Numerical Study
(The American Society of Mechanical Engineers (ASME), 2018)The present paper reports experimental and numerical analyses of the macrostructures featured by a stratified swirling flame for varying stratification ratio (SR). The studies are performed with the Beihang Axial Swirler ... -
Predictive Compressor Wash Optimization for Economic Operation of Gas Turbine
(The American Society of Mechanical Engineers (ASME), 2018)Gas turbine engines (GTEs) are widely used for power generation, ranging from stationary power plants to airplane propulsion systems. Compressor fouling is the dominant degradation mode in gas turbines that leads to economic ... -
Experimental Investigation of NOx Formation in a Dual Fuel Engine
(The American Society of Mechanical Engineers (ASME), 2018)The North American oil and gas industry has experienced a market pull for dual fuel (DF) engines that can run on any ratio of fuels ranging from 100% diesel to a high proportion of field gas relative to diesel, while also ... -
Optimization of the Efficiency of Stall Control Using Air Injection for Centrifugal Compressors—Additional Findings
(The American Society of Mechanical Engineers (ASME), 2018)This study presents additional important findings to the results of the research paper; “Optimization of the efficiency of stall control using air injection for centrifugal compressors” published in the Journal of Engineering ... -
Combustion Performance and Unburned Hydrocarbon Emissions of a Natural Gas–Diesel Dual Fuel Engine at a Low Load Condition
(The American Society of Mechanical Engineers (ASME), 2018)The combustion of natural gas reduces fuel cost and generates less emissions of carbon dioxide and particulate matter (PM) than diesel and gasoline. Replacing diesel by natural gas in internal combustion engines is of great ... -
Turbomachine Design for Supercritical Carbon Dioxide Within the sCO2-HeRo.eu Project
(The American Society of Mechanical Engineers (ASME), 2018)The paper aims to give an overview over the keystones of design of the turbomachine for a supercritical CO2 (sCO2) Brayton cycle. The described turbomachine is developed as part of a demonstration cycle on a laboratory ... -
Damkohler Number Analysis in Lean Blow-Out of Toroidal Jet Stirred Reactor
(The American Society of Mechanical Engineers (ASME), 2018)Lean blowout (LBO) prediction based on the local parameters in the laboratory toroidal jet-stirred reactor (TJSR) is investigated. The reactor operated on methane is studied using three-dimensional computational fluid ... -
Complex Flow Generation and Development in a Full-Scale Turbofan Inlet
(The American Society of Mechanical Engineers (ASME), 2018)The future of aviation relies on the integration of airframe and propulsion systems to improve aerodynamic performance and efficiency of aircraft, bringing design challenges, such as the ingestion of nonuniform flows by ... -
Wet Steam Nonequilibrium Condensation Flow-Induced Vibrations of a Nuclear Turbine Blade
(The American Society of Mechanical Engineers (ASME), 2018)Condensing flow induced vibration (CFIV) of the rotor blade is a tough problem for designers of nuclear turbines because nonequilibrium condensing flow excitation (NECFE) is hard to be directly modeled. Generally, in design, ... -
Prediction of CO and NOx Pollutants in a Stratified Bluff Body Burner
(The American Society of Mechanical Engineers (ASME), 2018)The major exhaust gas pollutants from heavy duty gas turbine engines are CO and NOx. The difficulty of predicting the concentration of these combustion products originates from their wide range of chemical time scales. In ... -
Application of Cyclo-Nonstationary Indicators for Bearing Monitoring Under Varying Operating Conditions
(The American Society of Mechanical Engineers (ASME), 2018)Condition monitoring assesses the operational health of rotating machinery, in order to provide early and accurate warning of potential failures such that preventative maintenance actions may be taken. To achieve this ...