Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 2801-2820 of 9564
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Numerical Investigations on the Sealing Effectiveness of Turbine Honeycomb Radial Rim Seal
(The American Society of Mechanical Engineers (ASME), 2016)This paper presented a numerical comparison of the sealing performance between conventional radial rim seal and newdesigned honeycomb radial rim seal with three sealing flow rates. Threedimensional unsteady Reynoldsaveraged ... -
Startup and Steady State Performance of a New Renewable Hydroprocessed Depolymerized Cellulosic Diesel Fuel in Multiple Diesel Engines
(The American Society of Mechanical Engineers (ASME), 2016)A new hydroprocessed depolymerized cellulosic diesel (HDCD) fuel has been developed using a process which takes biomass feedstock (principally cellulosic wood) to produce a synthetic fuel that has nominally آ½ cycloparaffins ... -
Experimental Analysis of Sudden Pressure Increase Phenomenon by Real Time Internal Observation of Diesel Particulate Filter
(The American Society of Mechanical Engineers (ASME), 2016)As a way of reducing the amount of particulate matter (PM) contained in the exhaust gas, diesel particulate filter (DPF) is widely used. To keep the condition of DPF normal and effective, estimation of the amount of PM ... -
Factors Determining Antiknocking Properties of Gaseous Fuels in Spark Ignition Gas Engines
(The American Society of Mechanical Engineers (ASME), 2016)The factors affecting knock resistance of fuels, including hydrogen (H2), ethane (C2H6), propane (C3H8), normal butane (nC4H10), and isobutane (iC4H10), were determined using modeling and engine operation tests with ... -
Harmonic Convergence Estimation Through Strain Energy Superconvergence
(The American Society of Mechanical Engineers (ASME), 2016)Grid convergence in finite element analysis (FEA), despite a wide variety of tools available to date, remains an elusive and challenging task. Due to the complex and timeconsuming process of remeshing and solving the finite ... -
An Evaluation of Combustion and Emissions Performance With Low Cetane Naphtha Fuels in a Multicylinder Heavy Duty Diesel Engine
(The American Society of Mechanical Engineers (ASME), 2016)Future projections in global transportation fuel use show a demand shift toward diesel and away from gasoline. At the same time, greenhouse gas regulations will drive higher vehicle fuel efficiency and lower welltowheel ... -
Analysis of Bifurcations in Multiharmonic Analysis of Nonlinear Forced Vibrations of Gas Turbine Engine Structures With Friction and Gaps
(The American Society of Mechanical Engineers (ASME), 2016)An efficient frequencydomain method has been developed to analyze the forced response of largescale nonlinear gas turbine structures with bifurcations. The method allows detection and localization of the design and operating ... -
Late Fuel Simulation Near Nozzle Outlet of Fuel Injector During Closing Valve
(The American Society of Mechanical Engineers (ASME), 2016)Late fuel during closing of the valve of a fuel injector and fuel films stuck on the wall around the nozzle outlets are sources of particulate matters (PM). In this study, we focused on the effects of the valve motions on ... -
High Pressure Electronic Fuel Injection for Small Displacement Single Cylinder Diesel Engines
(The American Society of Mechanical Engineers (ASME), 2016)Smalldisplacement singlecylinder diesel engines employ mechanically actuated fuel injection systems. These mechanically governed systems, while robust and low cost, lack the ability to fully vary injection parameters, such ... -
A Numerical Study of the Benefits of Electrically Assisted Boosting Systems
(The American Society of Mechanical Engineers (ASME), 2016)An electric compressor and an electrically assisted turbocharger have been applied to a 2.0 L gasoline and a 2.2 L diesel engine 1D wave dynamic model. A novel approach is presented for evaluating transient response ... -
Use of Adaptive Injection Strategies to Increase the Full Load Limit of RCCI Operation
(The American Society of Mechanical Engineers (ASME), 2016)Dualfuel combustion using portinjection of low reactivity fuel combined with direct injection (DI) of a higher reactivity fuel, otherwise known as reactivity controlled compression ignition (RCCI), has been shown as a ... -
On the Reduction of Combustion Noise by a Close Coupled Pilot Injection in a Small Bore Direct Injection Diesel Engine
(The American Society of Mechanical Engineers (ASME), 2016)For a pilot–main injection strategy in a singlecylinder lightduty diesel engine, the dwell between the pilotand maininjection events can significantly impact combustion noise. As the solenoid energizing dwell decreases ... -
Large Eddy Simulation of an Enclosed Turbulent Reacting Methane Jet With the Tabulated Premixed Conditional Moment Closure Method
(The American Society of Mechanical Engineers (ASME), 2016)The tabulated premixed conditional moment closure (TPCMC) method has been shown to provide the capability to model turbulent, premixed methane flames with detailed chemistry and reasonable runtimes in Reynoldsaveraged ... -
Development of a Computational Tool to Simulate Foil Bearings for Supercritical CO2 Cycles
(The American Society of Mechanical Engineers (ASME), 2016)The foil bearing is an enabling technology for turbomachinery systems, which has the potential to enable cost efficient supercritical CO2 cycles. The direct use of the cycle's working fluid within the bearings results in ... -
Multi objective Numerical Investigation of a Generic Airblast Injector Design
(The American Society of Mechanical Engineers (ASME), 2016)In combustor design for aeroengines, engineers face multiple opposing objectives with strict constraints. The trend toward lean direct injection (LDI) combustors suggests a growing emphasis on injector design to balance ... -
A Method to Reduce the Energy Localization in Mistuned Bladed Disks by Application Specific Blade Pattern Arrangement
(The American Society of Mechanical Engineers (ASME), 2016)The focus of the paper is the analysis of mistuning, which are small deviations of the blade properties, e.g., due to manufacturing tolerances. The resonant amplitudes of turbine blades are very sensitive to these deviations ... -
An Experimental Investigation of the Performance Impact of Swirl on a Turbine Exhaust Diffuser/Collector for a Series of Diffuser Strut Geometries
(The American Society of Mechanical Engineers (ASME), 2016)A comprehensive experimental investigation was initiated to evaluate the aerodynamic performance of a gas turbine exhaust diffuser/collector for various strut geometries over a range of inlet angle. The test was conducted ... -
An Enhanced Primary Reference Fuel Mechanism Considering Conventional Fuel Chemistry in Engine Simulation
(The American Society of Mechanical Engineers (ASME), 2016)A compact and accurate primary reference fuel (PRF) mechanism which consists of 46 species and 144 reactions was developed and validated to consider the fuel chemistry in combustion simulation based on a homogeneous charged ... -
Application of Dynamic د•â€“T Map: Analysis on a Natural Gas/Diesel Fueled RCCI Engine
(The American Society of Mechanical Engineers (ASME), 2016)In this study, dynamic د•â€“T map analysis was applied to a reactivity controlled compression ignition (RCCI) engine fueled with natural gas (NG) and diesel. The combustion process of the engine was simulated by coupled ... -
Investigation of Cold Starting and Combustion Mode Switching as Methods to Improve Low Load RCCI Operation
(The American Society of Mechanical Engineers (ASME), 2016)Reactivity controlled compression ignition (RCCI) is an engine combustion strategy that utilizes incylinder fuel blending to produce low NOx and particulate matter (PM) emissions while maintaining high thermal efficiency. ...