Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 3401-3420 of 9564
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Large Eddy Simulation of Vaporizing Sprays Considering Multi Injection Averaging and Grid Convergent Mesh Resolution
(The American Society of Mechanical Engineers (ASME), 2014)A stateoftheart spray modeling methodology, recently presented by Senecal et al. (2012, “Grid Convergent Spray Models for Internal Combustion Engine CFD Simulations,†Proceedings of the ASME 2012 Internal Combustion ... -
Multisensing Fuel Injector in Turbocharged Gasoline Direct Injection Engines
(The American Society of Mechanical Engineers (ASME), 2014)With the increasingly stringent emissions and fuel economy standards, there is a need to develop new advanced incylinder sensing techniques to optimize the operation of the internal combustion engine. In addition, reducing ... -
Predictions of Transient Flame Lift off Length With Comparison to Single Cylinder Optical Engine Experiments
(The American Society of Mechanical Engineers (ASME), 2014)A stateoftheart, gridconvergent simulation methodology was applied to threedimensional calculations of a singlecylinder optical engine. A mesh resolution study on a sectorbased version of the engine geometry further verified ... -
Analysis of Nonlinear Dynamic Response of Wind Turbine Blade Under Fluid–Structure Interaction and Turbulence Effect
(The American Society of Mechanical Engineers (ASME), 2014)In this paper, the entity model of a 1.5 MW offshore wind turbine blade was built by Pro/Engineer software. Fluid flow control equations described by arbitrary Lagrange–Euler (ALE) were established, and the theoretical ... -
Effect of Volatiles on Soot Based Deposit Layers
(The American Society of Mechanical Engineers (ASME), 2014)The implementation of exhaust gas recirculation (EGR) coolers has recently been a widespread methodology for engine incylinder NOx reduction. A common problem with the use of EGR coolers is the tendency for a deposit, or ... -
Numerical Investigation on Aerodynamic and Combustion Performance of Chevron Mixer Inside an Afterburner
(The American Society of Mechanical Engineers (ASME), 2014)To improve the performance of the afterburner for the turbofan engine, an innovative type of mixer, namely, the chevron mixer, was considered to enhance the mixture between the core flow and the bypass flow. Computational ... -
Some Investigations Into Transonic Axial-Flow Compressors With High Stage Load Coefficients and Low Degrees of Reaction
(The American Society of Mechanical Engineers (ASME), 1961)A design for a transonic axial-flow compressor is described, in which a rotor wheel with a low degree of reaction operates in subsonic flow and the stator operates in supersonic flow. A ... -
Experimental Evaluation of Service Exposed Nozzle Guide Vane Damage in a Rolls Royce A 250 Gas Turbine
(The American Society of Mechanical Engineers (ASME), 2014)A unique methodology and test rig was designed to evaluate the degradation of damaged nozzle guide vanes (NGVs) in a transonic annular cascade in the short duration facility at the Royal Military College. A custom test ... -
Stable and Efficient Operation of Gas Compressor With Improving of Surge Detection System
(The American Society of Mechanical Engineers (ASME), 2014)This paper investigates the application of fault diagnosis (FD) approach for improving performance of compressors within exact operating point determination. Detecting of sensor fault or failure status is more important ... -
Phenomena of Foreign Object Damage by Spherical Projectiles in EB PVD Thermal Barrier Coatings of Turbine Airfoils
(The American Society of Mechanical Engineers (ASME), 2014)Thermal barrier coatings (TBCs), attributed to their inherent brittleness, are vulnerable to damage by impacting foreign objects when kinetic energy of the objects surpasses certain limits. The damage is termed foreign ... -
Investigation on Material's Fatigue Property Variation Among Different Regions of Directional Solidification Turbine Blades—Part I: Fatigue Tests on Full Scale Blades
(The American Society of Mechanical Engineers (ASME), 2014)At present, directional solidification (DS) made blades are commonly used in high performance turbine for their better high temperature mechanical, especially in creep properties compared with the equiaxed grain (EG) blades ... -
Investigation on Material's Fatigue Property Variation Among Different Regions of Directional Solidification Turbine Blades—Part II: Fatigue Tests on Bladelike Specimens
(The American Society of Mechanical Engineers (ASME), 2014)Part I of this investigation is mainly focused on fatigue tests of full scale turbine blades, based on the observation of the phenomena that some directional solidification (DS) blades do not fracture at their maximum ... -
Hole Pattern Seals Performance Evaluation Using Computational Fluid Dynamics and Design of Experiment Techniques
(The American Society of Mechanical Engineers (ASME), 2014)A main goal of noncontacting mechanical seals is to provide minimal leakage during operation. This may be achieved by specifying a small clearance between the mating faces that is just enough to avoid rubbing contact while ... -
Design Considerations for Supercritical Carbon Dioxide Brayton Cycles With Recompression
(The American Society of Mechanical Engineers (ASME), 2014)Supercritical carbon dioxide (SCO2) Brayton cycles have the potential to offer improved thermaltoelectric conversion efficiency for utility scale electricity production. These cycles have generated considerable interest ... -
Energy and Reserve Co optimization of a Combined Cycle Plant Using Mixed Integer Linear Programming
(The American Society of Mechanical Engineers (ASME), 2014)The growth in the importance of interruptible sources of energy is increasing the concerns of many electricity market regulators with respect to the reliability and stability of electricity supply. Decisions such as that ... -
Integrated HCCI Engine Control Based on a Performance Index
(The American Society of Mechanical Engineers (ASME), 2014)The integrated control of a homogenous charge compression ignition (HCCI) combustion phasing, load, and exhaust aftertreatment system is essential for realizing highefficient HCCI engines, while maintaining low hydrocarbon ... -
Analysis and Modeling of the Transient Thermal Behavior of Automotive Turbochargers
(The American Society of Mechanical Engineers (ASME), 2014)Turbochargers are a key technology to deliver fuel consumption reductions on future internal combustion engines. However, the current industry standard modeling approaches assume the turbine and compressor operate under ... -
Concept for a Combustion System in Oxyfuel Gas Turbine Combined Cycles
(The American Society of Mechanical Engineers (ASME), 2014)A promising candidate for CO2 neutral power production is semiclosed oxyfuel combustion combined cycles (SCOCCC). Two alternative SCOCCCs have been investigated both with recirculation of the working fluid (WF) (CO2 and ... -
Thermodynamic Considerations for Advanced, High Efficiency IC Engines
(The American Society of Mechanical Engineers (ASME), 2014)Thermodynamics is the key discipline for determining and quantifying the elements of advanced engine designs, which lead to high efficiency. In spite of its importance, thermodynamics is often not given full consideration ... -
High Load (21 Bar IMEP) Dual Fuel RCCI Combustion Using Dual Direct Injection
(The American Society of Mechanical Engineers (ASME), 2014)Dualfuel reactivity controlled compression ignition (RCCI) combustion has shown high thermal efficiency and superior controllability with low NOx and soot emissions. However, as in other low temperature combustion (LTC) ...