Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 4181-4200 of 9564
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Impact of Swirl Flow on the Cooling Performance of an Effusion Cooled Combustor Liner
(The American Society of Mechanical Engineers (ASME), 2012)An experimental study on combustor liner cooling of modern direct lean injection combustion chambers using coolant ejection from both effusion cooling holes and a starter film has been conducted. ... -
Combustion Assessment of a 50% Algae-Based HRD76 Fuel and 50% Conventional F76 Military Diesel Fuel Blend
(The American Society of Mechanical Engineers (ASME), 2012)As part of the United States Navy green energy initiative, engineers at Rolls-Royce and NAVSEA conducted a combustion assessment for a blend of 50% algae-derived HRD76 biofuel and 50% conventional ... -
Operation and Simulation of Hybrid Wind and Gas Turbine Power System Employing Wind Power Forecasting
(The American Society of Mechanical Engineers (ASME), 2012)Due to the intermittence and fluctuation of wind resource, the integration of large wind farms in a power grid always brings challenges to maintain the stability of a power system. Integrating ... -
Large Eddy Simulations of Supersonic Impinging Jets
(The American Society of Mechanical Engineers (ASME), 2012)Supersonic impinging jet flow fields contain self-sustaining acoustic feedback features that create high levels of tonal noise. These types of flow fields are typically found with short takeoff ... -
The Impact of Probabilistic Modeling in Life-Cycle Management of Nuclear Piping Systems
(The American Society of Mechanical Engineers (ASME), 2011)Flow accelerated corrosion (FAC) is a serious form of degradation in primary heat transport piping system (PHTS) of the nuclear reactor. Pipes transporting hot coolant from the reactor to steam ... -
A Simple Parametric Model for the Analysis of Cooled Gas Turbines
(The American Society of Mechanical Engineers (ASME), 2011)A natural gas fired gas turbine combined cycle power plant is the most efficient option for fossil fuel based electric power generation that is commercially available. Trade publications report ... -
A Novel Approach of Retrofitting a Combined Cycle With Post Combustion CO2 Capture
(The American Society of Mechanical Engineers (ASME), 2011)Most state-of-the-art natural gas-fired combined cycle (NGCC) plants are triple-pressure reheat cycles with efficiencies close to 60%. However, with carbon capture and storage, the efficiency will ... -
The Effects of Diesel Injector Needle Motion on Spray Structure
(The American Society of Mechanical Engineers (ASME), 2011)The internal structure of diesel fuel injectors is known to have a significant impact on the steady-state fuel distribution within the spray. However, little experimental or computational work ... -
Flow and Mass Transfer in Bends Under Flow-Accelerated Corrosion Wall Thinning Conditions
(The American Society of Mechanical Engineers (ASME), 2011)The three groups of parameters that affect flow-accelerated corrosion (FAC) are the flow conditions, water chemistry, and materials. Nuclear power plant (NPP) data and laboratory tests confirm ... -
Three-Dimensional Modeling for Wet Compression in a Single Stage Compressor Including Liquid Particle Erosion Analysis
(The American Society of Mechanical Engineers (ASME), 2011)Gas turbine inlet fog/overspray cooling is considered as a simple and effective method to increase power output. To help understand the water mist transport in the compressor flow passage, this ... -
Evolutionary Optimization of Micro-Thrust Bearings With Periodic Partial Trapezoidal Surface Texturing
(The American Society of Mechanical Engineers (ASME), 2011)An optimization study of trapezoidal surface texturing in slider micro-bearings, via computational fluid dynamics (CFD), is presented. The bearings are modeled as micro-channels, consisting of a ... -
The Effects of Intake Plenum Volume on the Performance of a Small Naturally Aspirated Restricted Engine
(The American Society of Mechanical Engineers (ASME), 2011)Intake tuning is a widely recognized method for optimizing the performance of a naturally aspirated engine for motorsports applications. Wave resonance and Helmholtz theories are useful for ... -
Torsional Vibrations Caused by Geared Coupling in a Shaft Train Driven by a Steam Turbine
(The American Society of Mechanical Engineers (ASME), 2011)Rotating machines that include geared shaft-trains can be affected by a dynamic behavior that is influenced by coupling effects between lateral and torsional vibrations. These latter vibrations ... -
Influence of the Primary Jets and Fuel Injection on the Aerodynamics of a Prototype Annular Gas Turbine Combustor Sector
(The American Society of Mechanical Engineers (ASME), 2011)Transverse dilution jets are widely used in combustion systems. The current research provides a detailed study of the primary jets of a realistic annular combustion chamber sector. The combustor ... -
A Methodology for On the Fly Acoustic Characterization of the Feeding Line Impedances in a Turbulent Swirled Combustor
(The American Society of Mechanical Engineers (ASME), 2011)A methodology is proposed to determine on the fly the acoustic impedances at the boundaries of a combustor under operation and without the need for an external forcing device. The methodology ... -
Characterization of a Superheated Fuel Jet in a Crossflow
(The American Society of Mechanical Engineers (ASME), 2011)An experiment was conducted to characterize a superheated fuel jet (Jet-A) injected into an unheated crossflow of air. The liquid phase of the fuel jet was characterized with high speed imaging ... -
An Experimental Ignition Delay Study of Alkane Mixtures in Turbulent Flows at Elevated Pressures and Intermediate Temperatures
(The American Society of Mechanical Engineers (ASME), 2011)Autoignition delay times of mixtures of alkanes and natural gas were studied experimentally in a high pressure and intermediate temperature turbulent flow reactor. Measurements were made at ... -
Assessment of Future Aero-engine Designs With Intercooled and Intercooled Recuperated Cores
(The American Society of Mechanical Engineers (ASME), 2011)Reduction in CO2 emissions is strongly linked with the improvement of engine specific fuel consumption, as well as the reduction in engine nacelle drag and weight. Conventional turbofan designs, ... -
Experiments on Flame Flashback in a Quasi-2D Turbulent Wall Boundary Layer for Premixed Methane-Hydrogen-Air Mixtures
(The American Society of Mechanical Engineers (ASME), 2011)Premixed combustion of hydrogen-rich mixtures involves the risk of flame flashback through wall boundary layers. For laminar flow conditions, the flashback mechanism is well understood and is ... -
HRSG Design for Integrated Reforming Combined Cycle With CO2 Capture
(The American Society of Mechanical Engineers (ASME), 2011)This article illustrates aspects of heat recovery steam generator (HRSG) design when employing process integration in an integrated reforming combined cycle (IRCC) with precombustion CO2 capture. ...