Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 4201-4220 of 9564
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A Finite Element Method for Three-Dimensional Analysis of Thermo-acoustic Combustion Instability
(The American Society of Mechanical Engineers (ASME), 2011)A method for predicting the onset of acoustically driven combustion instabilities in gas turbine combustor is examined. The basic idea is that the governing equations of the acoustic waves can ... -
Application of Silicon Carbide Photodiode Flame Temperature Sensors in an Active Combustion Pattern Factor Control System
(The American Society of Mechanical Engineers (ASME), 2011)This paper describes the development and initial application studies for an active combustion pattern factor controller (APFC) for gas turbines. The system is based around the use of a novel ... -
Application of Fiber-Optical Microphone for Thermo-Acoustic Measurements
(The American Society of Mechanical Engineers (ASME), 2011)A high temperature resistant fiber-optical microphone (FOM) was developed and successfully applied in a combustion chamber at a thermal power of 8.4 kW to measure thermo-acoustic oscillations at ... -
High Temperature Fast Response Aerodynamic Probe
(The American Society of Mechanical Engineers (ASME), 2011)In order to advance the technology for measurements in higher temperature flows, a novel miniature (diameter 2.5 mm) fast response probe that can be applied in flows with temperatures of up ... -
Numerical and Experimental Characterization of a Natural Gas Engine With Partially Stratified Charge Spark Ignition
(The American Society of Mechanical Engineers (ASME), 2011)This paper outlines the development of a comprehensive numerical framework for the partially stratified charge (PSC) lean-burn natural gas engine. A 3D model of the engine was implemented to ... -
Ultralow-Emission Combustion and Control System Installation Into Mature Power Plant Gas Turbines
(The American Society of Mechanical Engineers (ASME), 2011)The search for power plant sustainability options continues as regulating agencies exert more stringent industrial gas turbine emission requirements on operators. Purchasing power for resale, ... -
Simulation of Instantaneous Heat Transfer in Spark Ignition Internal Combustion Engines: Unsteady Thermal Boundary Layer Modeling
(The American Society of Mechanical Engineers (ASME), 2011)Simulation of internal combustion engine heat transfer using low-dimensional thermodynamic modeling often relies on quasisteady heat transfer correlations. However, unsteady thermal boundary layer ... -
Vibration Analysis of a Nonlinear System With Cyclic Symmetry
(The American Society of Mechanical Engineers (ASME), 2011)This work is devoted to the study of nonlinear dynamics of structures with cyclic symmetry under geometrical nonlinearity using the harmonic balance method (HBM). In order to study the influence ... -
Prediction of Aeroacoustic Resonance in Cavities of Hole-Pattern Stator Seals
(The American Society of Mechanical Engineers (ASME), 2011)A Reynolds-averaged Navier–Stokes (RANS) solver developed in-house was used to simulate grazing channel flow past single and multiple cavities. The objective of this investigation was to predict ... -
Experiments on the Transient Performance of an Adaptive Multi-Objective Controller for Rotating Machinery
(The American Society of Mechanical Engineers (ASME), 2011)This paper describes an experimental assessment of the transient performance of a multi-objective adaptive approach to the control of flexible rotors. This is applicable to any arrangement of ... -
Thermal Aspects of Uranium Carbide and Uranium Dicarbide Fuels in Supercritical Water-Cooled Nuclear Reactors
(The American Society of Mechanical Engineers (ASME), 2011)Supercritical water-cooled nuclear reactors (SCWRs) are a Generation IV reactor concept. SCWRs will use a light-water coolant at operating parameters set above the critical point of water (22.1 ... -
Safety Evaluation of the HTTR-IS Nuclear Hydrogen Production System
(The American Society of Mechanical Engineers (ASME), 2011)The establishment of a safety evaluation method is one of the key issues for the nuclear hydrogen production demonstration since fundamental differences in the safety philosophy between nuclear ... -
A New Analysis Tool Assessment for Rotordynamic Modeling of Gas Foil Bearings
(The American Society of Mechanical Engineers (ASME), 2011)Gas foil bearings offer several advantages over traditional bearing types that make them attractive for use in high-speed turbomachinery. They can operate at very high temperatures, require no ... -
Derivation of Temperature-Estimation Equation Based on Microstructural Changes in Coatings of In-Service Blades of Gas Turbines
(The American Society of Mechanical Engineers (ASME), 2011)A CoNiCrAlY-coated blade of an in-service gas turbine is analyzed, and a diffusion layer is formed along the boundary between the coating and the substrate due to the interdiffusion in the ... -
Investigation of Auto-Ignition of a Pulsed Methane Jet in Vitiated Air Using High-Speed Imaging Techniques
(The American Society of Mechanical Engineers (ASME), 2011)An experimental arrangement for the investigation of auto-ignition of a pulsed CH4 jet in a coflow of hot exhaust gas from a laminar lean premixed H2/air flame at atmospheric pressure is ... -
Modeling and Performance Analysis of the Rolls-Royce Fuel Cell Systems Limited: 1 MW Plant
(The American Society of Mechanical Engineers (ASME), 2011)This paper is focused on the performance of the 1 MW plant designed and developed by Rolls-Royce Fuel Cell Systems Limited. The system consists of a two stage turbogenerator coupled with ... -
Vibration Diagnosis Featuring Blade-Shaft Coupling Effect of Turbine Rotor Models
(The American Society of Mechanical Engineers (ASME), 2011)As is well known, zero and one nodal diameter (k=0 and k=1) modes of a blade system interact with the shaft system. The former couples with torsional and/or axial shaft vibrations, and the ... -
Numerical Study of Aerodynamic Losses of Effusion Cooling Holes in Aero-Engine Combustor Liners
(The American Society of Mechanical Engineers (ASME), 2011)Due to the stringent cooling requirements of novel aero-engines combustor liners, a comprehensive understanding of the phenomena concerning the interaction of hot gases with typical coolant jets ... -
Computational Modeling of Turbulent Mixing of a Transverse Jet
(The American Society of Mechanical Engineers (ASME), 2011)This paper presents numerical simulations of turbulent mixing of a jet in crossflow. The test case is chosen to resemble scalar mixing processes in the premixing zones of gas turbine combustion ... -
Numerical and Experimental Analysis of the Temperature Distribution in a Hydrogen Fuelled Combustor for a 10 MW Gas Turbine
(The American Society of Mechanical Engineers (ASME), 2011)Proper cooling of the hot components and an optimal temperature distribution at the turbine inlet are fundamental targets for gas turbine combustors. In particular, the temperature distribution ...