Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 4461-4480 of 9564
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Spray in Crossflow: Dependence on Weber Number
(The American Society of Mechanical Engineers (ASME), 2010)This paper describes an experimental investigation of the spray created by Jet A fuel injection from a plate containing sharp edged orifice 0.018in.(457μm) in diameter and L∕D ratio of 10 into ... -
Design Option of Heat Exchanger for the Next Generation Nuclear Plant
(The American Society of Mechanical Engineers (ASME), 2010)The next generation nuclear plant (NGNP), a very high temperature gas-cooled reactor (VHTR) concept, will provide the first demonstration of a closed-loop Brayton cycle at a commercial scale, ... -
Kinetic Study of the Thermo-Oxidative Degradation of Squalane (C30H62) Modeling the Base Oil of Engine Lubricants
(The American Society of Mechanical Engineers (ASME), 2010)On the basis of ongoing research conducted on the clarification of processes responsible for lubricant degradation in the environment of piston grooves in exhaust gas recirculation (EGR) diesel ... -
Flame Transfer Functions for Liquid-Fueled Swirl-Stabilized Turbulent Lean Direct Fuel Injection Combustion
(The American Society of Mechanical Engineers (ASME), 2010)Heat release rate responses to inlet fuel modulations, i.e., the flame transfer function (FTF), are measured for a turbulent, liquid-fueled, swirl-stabilized lean direct fuel injection combustor. ... -
Turbocharger Nonlinear Response With Engine-Induced Excitations: Predictions and Test Data
(The American Society of Mechanical Engineers (ASME), 2010)Turbochargers (TCs) aid to produce smaller and more fuel-efficient passenger vehicle engines with power outputs comparable to those of large displacement engines. This paper presents further ... -
An Analytical Approach for the Evaluation of the Optimal Combustion Phase in Spark Ignition Engines
(The American Society of Mechanical Engineers (ASME), 2010)It is well known that the spark advance is one of the most important parameters influencing the efficiency of a spark ignition engine. A change in this parameter causes a shift in the ... -
An Experimental and Numerical Investigation of Spark Ignition Engine Operation on H2, CO, CH4, and Their Mixtures
(The American Society of Mechanical Engineers (ASME), 2010)The knock and combustion characteristics of CO, H2, CH4, and their mixtures were determined experimentally in a variable compression ratio spark ignition (SI) cooperative fuel research (CFR) ... -
A Comparison of the Different Methods of Using Jatropha Oil as Fuel in a Compression Ignition Engine
(The American Society of Mechanical Engineers (ASME), 2010)Different methods to improve the performance of a jatropha oil based compression ignition engine were tried and compared. A single cylinder water-cooled, direct injection diesel engine was used. ... -
Measurement of Structural Stiffness and Damping Coefficients in a Metal Mesh Foil Bearing
(The American Society of Mechanical Engineers (ASME), 2010)Engineered metal mesh foil bearings (MMFBs) are a promising low cost bearing technology for oil-free microturbomachinery. In a MMFB, a ring shaped metal mesh provides a soft elastic support to ... -
Computational Studies of the Unbalance Response of a Whole Aero-Engine Model With Squeeze-Film Bearings
(The American Society of Mechanical Engineers (ASME), 2010)The computation of the unbalance vibration response of aero-engine assemblies fitted with nonlinear bearings requires the retention of a very large number of modes for reliable results. This ... -
Synchronous Response to Rotor Imbalance Using a Damped Gas Bearing
(The American Society of Mechanical Engineers (ASME), 2010)One type of test performed for evaluating bearings for application into turbomachinery is the synchronous bearing response to rotor imbalance. This paper presents rotordynamic tests on a rotor ... -
Simulating the Concentration Equations and the Gas-Wall Interface for One-Dimensional Based Diesel Particulate Filter Models
(The American Society of Mechanical Engineers (ASME), 2010)This paper enhances an earlier publication by including the concentration equations of motion into the area-conserved one-dimensional based diesel particulate filter model. A brief historical review ... -
A Novel Coal-Based Hydrogen Production System With Low CO2 Emissions
(The American Society of Mechanical Engineers (ASME), 2010)In this paper, we have proposed a novel coal-based hydrogen production system with low CO2 emission. In this novel system, a pressure swing adsorption H2 production process and a CO2 cryogenic ... -
Advanced Braze Alloys for Fast Epitaxial High-Temperature Brazing of Single-Crystalline Nickel-Base Superalloys
(The American Society of Mechanical Engineers (ASME), 2010)High-temperature diffusion brazing is a very important technology for filling cracks in components from single-crystalline nickel-base superalloys as used in aircraft engines and stationary gas ... -
Mapping the Density Fluctuations in a Pulsed Air-Methane Flame Using Laser-Vibrometry
(The American Society of Mechanical Engineers (ASME), 2010)Laser vibrometry (LV) is originally a laser-based, line-of-sight measurement technique dedicated to the analysis of surface vibrations. It was lately adapted at TU Graz for monitoring the stability ... -
Aerodynamic Design and Numerical Investigation on Overall Performance of a Microradial Turbine With Millimeter-Scale
(The American Society of Mechanical Engineers (ASME), 2010)For millimeter-scale microturbines, the principal challenge is to achieve a design scheme to meet the aerothermodynamics, geometry restriction, structural strength, and component functionality ... -
Influence of Blade Deterioration on Compressor and Turbine Performance
(The American Society of Mechanical Engineers (ASME), 2010)Gas turbine operating state determination consists of the assessment of the modification due to deterioration and fault of performance and geometric data characterizing machine components. One of ... -
Application of Bayesian Forecasting to Change Detection and Prognosis of Gas Turbine Performance
(The American Society of Mechanical Engineers (ASME), 2010)The performance of gas turbines degrades over time due to deterioration mechanisms and single fault events. While deterioration mechanisms occur gradually, single fault events are characterized ... -
Investigation of Nozzle Flow and Cavitation Characteristics in a Diesel Injector
(The American Society of Mechanical Engineers (ASME), 2010)Cavitation and turbulence inside a diesel injector play a critical role in primary spray breakup and development processes. The study of cavitation in realistic injectors is challenging, both ... -
Postirradiation Testing of High Temperature Reactor Spherical Fuel Elements Under Accident Conditions
(The American Society of Mechanical Engineers (ASME), 2010)A new furnace for accident condition testing of spherical high temperature reactor fuel elements has been installed and now operates in the hot cells of the Institute for Transuranium Elements ...