Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 4881-4900 of 9564
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Controlling n-Heptane HCCI Combustion With Partial Reforming: Experimental Results and Modeling Analysis
(The American Society of Mechanical Engineers (ASME), 2009)One potential method for controlling the combustion phasing of a homogeneous charge compression ignition (HCCI) engine is to vary the fuel chemistry using two fuels with different auto-ignition ... -
Modeling of Compressed Air Hybrid Operation for a Heavy Duty Diesel Engine
(The American Society of Mechanical Engineers (ASME), 2009)This paper presents the analysis and modeling of a 10.8 l heavy-duty diesel engine modified for operating compressed air hybrid engine cycles. A lumped parameter model is developed to first ... -
A Stochastic Model for Piping Failure Frequency Analysis Using OPDE Data
(The American Society of Mechanical Engineers (ASME), 2009)The accurate estimation of piping failure frequency is an important task to support the probabilistic risk assessment and risk-informed in-service inspection of nuclear power plants. Although ... -
Flow Visualization in the Scaled Up Pebble Bed of High Temperature Gas-Cooled Reactor Using Particle Image Velocimetry Method
(The American Society of Mechanical Engineers (ASME), 2009)The flow visualization in the complicated flow geometry of the pebble bed of the high temperature gas-cooled reactor is investigated to identify the stagnation points at which internal hot spots ... -
Passive Control of the Inlet Acoustic Boundary of a Swirled Burner at High Amplitude Combustion Instabilities
(The American Society of Mechanical Engineers (ASME), 2009)Perforated panels placed upstream of the premixing tube of a turbulent swirled burner are investigated as a passive control solution for combustion instabilities. Perforated panels backed by a ... -
Enhanced Fault Localization Using Probabilistic Fusion With Gas Path Analysis Algorithms
(The American Society of Mechanical Engineers (ASME), 2009)A method for gas turbine fault identification from gas path data, in situations with a limited number of measurements, is presented. The method consists of a two stage process: (a) localization ... -
Design and Technology Development Status and Design Considerations for Innovative Small and Medium Sized Reactors
(The American Society of Mechanical Engineers (ASME), 2009)There is continuing interest in Member States in the development and application of small and medium sized reactors (SMRs), i.e., the reactors with an equivalent electric power of less than ... -
Characteristics of Flow and Flame Behavior Behind Rifled/Unrifled Nozzles
(The American Society of Mechanical Engineers (ASME), 2009)A novel rifled nozzle was installed behind a conventional combustion exhauster to improve combustion efficiency. The rifled nozzles improve the momentum transmission, turbulent strength, and mixing ... -
Real-Time Transient Three Spool Turbofan Engine Simulation: A Hybrid Approach
(The American Society of Mechanical Engineers (ASME), 2009)This paper presents a transient three-spool turbofan engine simulation model that uses a combination of intercomponent volume and iterative techniques. The engine model runs in real time and has ... -
Combustion Simulation of an Exhaust Gas Recirculation Operated Micro-gas Turbine
(The American Society of Mechanical Engineers (ASME), 2009)Following their recent experiences in the search of methods for reducing the nitric oxide emissions from a micro-gas turbine, the authors discuss in this paper the results of the combustion ... -
High-Temperature Properties of Nuclear Graphite
(The American Society of Mechanical Engineers (ASME), 2009)The unique combination of physical properties inherent to graphite makes it an attractive material for use as a moderator in high-temperature nuclear reactors. High-temperature physical properties ... -
Mixing Conditions in the Lower Plenum and Core Inlet of a Boiling Water Reactor
(The American Society of Mechanical Engineers (ASME), 2009)A thermal mixing analysis of the downcomer, main recirculation pumps (MRPs) and lower plenum of Forsmark’s Unit 3 has been carried out with three separate computational fluid dynamics models. ... -
Evaluation of the Phase Composition, Crystallinity, and Trace Isotope Variation of SiC in Experimental TRISO Coated Particles
(The American Society of Mechanical Engineers (ASME), 2009)The SiC layers in experimental tristructural-isotropic (TRISO) coated particles with zirconia kernels were evaluated for their phase composition, impurity levels, crystal perfection, and twinning ... -
Investigation of High-Temperature Printed Circuit Heat Exchangers for Very High Temperature Reactors
(The American Society of Mechanical Engineers (ASME), 2009)Very high-temperature reactors require high-temperature (900–950°C) and high-integrity heat exchangers with high effectiveness during normal and off-normal conditions. A class of compact heat ... -
Corrosion Issues of High Temperature Reactor Structural Metallic Materials
(The American Society of Mechanical Engineers (ASME), 2009)Cooling helium of high temperature reactors (HTRs) is expected to contain a low level of impurities: oxidizing gases and carbon-bearing species. Reference structural materials for pipes and heat ... -
Low-Temperature Combustion Within a HSDI Diesel Engine Using Multiple-Injection Strategies
(The American Society of Mechanical Engineers (ASME), 2009)Low-temperature compression ignition combustion employing multiple-injection strategies in an optical high-speed direct injection diesel engine was investigated. Heat release characteristics were ... -
Measurement of Biodiesel Blend and Conventional Diesel Spray Structure Using X-Ray Radiography
(The American Society of Mechanical Engineers (ASME), 2009)The near-nozzle structure of several nonevaporating biodiesel-blend sprays has been studied using X-ray radiography. Radiography allows quantitative measurements of the fuel distribution in sprays ... -
Chromium Activity Measurements in Nickel Based Alloys for Very High Temperature Reactors: Inconel 617, Haynes 230, and Model Alloys
(The American Society of Mechanical Engineers (ASME), 2009)The alloys Haynes 230 and Inconel 617 are potential candidates for the intermediate heat exchangers (IHXs) of (very) high temperature reactors ((V)-HTRs). The behavior under corrosion of these ... -
A Viscoplastic Modeling Approach for MCrAlY Protective Coatings for Gas Turbine Applications
(The American Society of Mechanical Engineers (ASME), 2009)MCrAlY coatings are applied in industrial gas turbines and aircraft engines to protect surfaces of hot gas exposed components from oxidation and corrosion at elevated temperature. Apart from ... -
Experimental Study of Oblong Exhaust Ejectors With Multiring Oblong Entraining Diffusers
(The American Society of Mechanical Engineers (ASME), 2009)This paper presents experimental data for the performance of two oblong, straight, air-air ejectors with four-ring oblong entraining diffusers. The effects of inlet swirl angle, nozzle diameter, ...