Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 1081-1100 of 9564
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Experimental Investigation on Spray Evaporation and Dispersion Characteristics of Impinged Biodiesel-Butanol Blends
(The American Society of Mechanical Engineers (ASME), 2022)The objective of the investigation is to explore the spray evaporation and dispersion characteristics of impinged biodiesel-butanol blends at various n-butanol ratios (0, 10%, 30%, 50%) and ambient conditions. A total of ... -
Large Eddy Simulation Based Computational Fluid Dynamics Investigation of the Ignition Process in Lean Spray Burner
(The American Society of Mechanical Engineers (ASME), 2022)During the last decades, several new technologies were investigated in order to reduce the pollutant emissions and increase the overall engine efficiency. Unluckily, some of them including the lean direct injection spray ... -
A Distributed Fuel Injection Approach to Suppress Lean Blow-Out and NOx Emissions in a Methane-Ammonia-Fueled Premixed Swirl Combustor
(The American Society of Mechanical Engineers (ASME), 2022)In an effort to reduce the harmful effects of greenhouse gas emissions, ammonia is being pursued as a fuel for power generation as it is a carbon-free energy source. However, the use of ammonia-air mixtures in premixed ... -
Experimental Investigation on the Mechanism of Impeller Synchronous and Nonsynchronous Vibrations in an Industrial Centrifugal Compressor
(The American Society of Mechanical Engineers (ASME), 2022)Understanding of the fluid–structure interaction phenomena in centrifugal compressors is essential for the impeller structural integrity design. To enhance the understanding of blade vibration in a realistic flow environment, ... -
Investigation of the Effect of Simulated Atmospheric Conditions at Different Altitudes on the Combustion Process in a Heavy-Duty Diesel Engine Based on Zero-Dimensional Modeling
(The American Society of Mechanical Engineers (ASME), 2022)Plateau diesel engines suffer from increased fuel consumption and deteriorating emissions. These problems were mainly caused by the combustion worsening inside the chamber. However, limited research has been done specifically ... -
Control Strategy Development for Optimized Operational Flexibility From Humidified Microgas Turbine: Saturation Tower Performance Assessment
(The American Society of Mechanical Engineers (ASME), 2022)Waste heat recovery through cycle humidification is considered as an effective tool to increase the operational flexibility of micro gas turbines (mGTs) in cogeneration in a decentralized energy system (DES) context. Indeed, ... -
Dynamic Strain Reconstruction of Rotating Blades Based on Tip Timing and Response Transmissibility
(The American Society of Mechanical Engineers (ASME), 2022)Dynamic strain of rotating blades is critical in turbomachinery health monitoring and residual life evaluation. Though the blade tip timing (BTT) technique is promising to replace traditional strain gages, the lack of ... -
Experimental Probe Into a Biogas Run Dual Fuel Diesel Engine Using Oxygenated Ternary Blends at Optimum Equivalence Ratio and Under the Effect of Intake Charge Preheating
(The American Society of Mechanical Engineers (ASME), 2022)The key challenge of dual fuel mode (DFM) of a compression ignition (CI) diesel engine is to improve the engine performance, and to reduce primarily the carbon monoxide (CO) and unburnt hydrocarbon (HC) emissions. The ... -
Numerical and Experimental Study on Rod-Fastened Rotor Dynamics Using Semi-Analytical Elastic-Plastic Model
(The American Society of Mechanical Engineers (ASME), 2022)Rod-fastened rotor is the core rotating section of the heavy-duty gas turbine. To accurately analyze its dynamic characteristics, the contact model for the disk contact interface needs to be defined and established. ... -
The Effect of Multiple Coexisting Convective Modes in Determining Thermoacoustic Behavior of a Partially Premixed Swirl Flame
(The American Society of Mechanical Engineers (ASME), 2022)This study focuses on the effect of multiple heat release mode interactions on the amplitude of unsteady pressure oscillation for a partially premixed radial swirl burner, which uses methane as fuel. A range of operating ... -
Student Research Projects With Industrial Impact
(The American Society of Mechanical Engineers (ASME), 2022)This paper describes six final year undergraduate research projects supported by a collaboration between the Whittle Laboratory at the University of Cambridge and Reaction Engines (RE), a UK aerospace company. The collaboration ... -
An Experimental Study on Friction Contact Between Chamfered Labyrinth Fin and High Speed Rotor
(The American Society of Mechanical Engineers (ASME), 2022)This study reports an experimental work on friction contact between the chamfered labyrinth fin and high speed rotor at different incursion rates, final incursion depths, and sliding velocities. The small (original design ... -
Experimental Investigations Into the Effect of Surface Roughness and Contact Force on Leakage Between Two Rigid Metallic Surfaces
(The American Society of Mechanical Engineers (ASME), 2022)Current research and development efforts in the field of heavy-duty gas turbines focus on increasing engine efficiencies, lowering combustor emissions, and extending inspection intervals. To achieve further improvements ... -
Influence of the Tool Wear on the Quality and Service Life of Gears for the Geared Turbofan Technology Machined by Five-Axis Milling
(The American Society of Mechanical Engineers (ASME), 2022)The geared turbofan technology is one essential way to reduce the fuel consumption, the environmental footprint, and the noise pollution of civil aircrafts. An added gearbox between the fan and the low-pressure compressor ... -
Three-Dimensional Computational Fluid Dynamics Simulation and Mesh Size Effect of the Conversion of a Heavy-Duty Diesel Engine to Spark-Ignition Natural Gas Engine
(The American Society of Mechanical Engineers (ASME), 2022)With developing in computer technology, three-dimensional (3D) computational fluid dynamics (CFD) internal combustion (IC) engine simulations, which generally use reduced chemical kinetic mechanisms and simplified combustion ... -
The Influence of Ambient Pressure on the Measured Load Capacity of Bump-Foil and Spiral-Groove Gas Thrust Bearings at Ambient Pressures up to 69 Bar on a Novel High-Pressure Gas Bearing Test Rig
(The American Society of Mechanical Engineers (ASME), 2022)This paper will show the influence of ambient pressure on the thrust capacity of bump-foil and spiral-groove gas thrust bearings. The bearings were operating in nitrogen at various pressures up to 69 bar and were tested ... -
Efficient Optimization Design of Vortex Generators in a Highly Loaded Compressor Stator
(The American Society of Mechanical Engineers (ASME), 2022)Secondary flow transfers the boundary layer from the endwall to suction side corner region, which deteriorates the performance of compressors. Vortex generators (VGs) can attenuate the secondary flow when implemented at ... -
Effect of Turbulence on Forced Ignition of Jet-A/Air Mixtures
(The American Society of Mechanical Engineers (ASME), 2022)Consistent ignition of reactive mixtures in turbulent conditions continues to be a challenge, particularly for large, multicomponent fuels. Prior work has shown that turbulence can affect ignition parameters such as flame ... -
Rotordynamic Characteristics of a Novel Labyrinth Seal With Swirl Brakes at Seal Entrance and Cavity
(The American Society of Mechanical Engineers (ASME), 2022)Annular gas seals used in turbomachinery are key elements to ensure a high machine efficiency, due to their effect on the leakage flow. As the most common type of annular gas seals, labyrinth seal is widely used as end and ... -
Online (Remote) Teaching for Laboratory Based Courses Using “Digital Twins” of the Experiments
(The American Society of Mechanical Engineers (ASME), 2022)Covid-19 pandemic has introduced radical changes to engineering education in the sense that most of the teaching moved to the off-campus setting of the online classes. However, conducting laboratory classes, a fundamental ...