Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 4101-4120 of 9564
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Nonlinear Control of Aircraft Engines Using a Generalized Gronwall-Bellman Lemma Approach
(The American Society of Mechanical Engineers (ASME), 2012)Model-based design has attracted much attention in the field of aircraft engine control in recent years. As an aircraft engine is a complicated thermomechanical system, it can only be represented ... -
Prediction of Axial and Circumferential Flow Conditions in a High Temperature Foil Bearing With Axial Cooling Flow
(The American Society of Mechanical Engineers (ASME), 2012)A successful implementation of gas foil bearings (GFBs) into high temperature turbomachinery requires adequate thermal management to maintain system reliability and stability. The most common ... -
Effect of Pressure and Oil Mist on Windage Power Loss of a Shrouded Spiral Bevel Gear
(The American Society of Mechanical Engineers (ASME), 2012)In many aeroengines the accessory power offtake is achieved using a spiral bevel gear set running off one of the main shafts. The crown and bevel gears are housed in an internal gearbox and ... -
Particle Number Emissions of Nonroad Diesel Engines of Various Ages
(The American Society of Mechanical Engineers (ASME), 2012)Over the last two decades, gaseous and particle mass emissions of new diesel engines have been reduced effectively and progressively in response to the emissions legislation and due to the ... -
Oxidative Stability of Algae Derived Methyl Esters
(The American Society of Mechanical Engineers (ASME), 2012)Microalgae are currently receiving strong consideration as a potential biofuel feedstock to help meet the advanced biofuels mandate of the 2007 Energy Independence and Security Act because of ... -
End-of-Injection Behavior of Diesel Sprays Measured With X-Ray Radiography
(The American Society of Mechanical Engineers (ASME), 2012)The behavior of diesel fuel sprays at the end of injection is poorly understood, yet has important implications regarding diesel engine emissions. Recent research has shown that at the end of ... -
Real-Time Transient Soot and NOx Virtual Sensors for Diesel Engine Using Neuro-Fuzzy Model Tree and Orthogonal Least Squares
(The American Society of Mechanical Engineers (ASME), 2012)Diesel engine combustion and emission formation is highly nonlinear and thus creates a challenge related to engine diagnostics and engine control with emission feedback. This paper presents a ... -
Transient Behavior of Glow Plugs in Direct-Injection Natural Gas Engines
(The American Society of Mechanical Engineers (ASME), 2012)Glow plugs are a possible ignition source for direct injected natural gas engines. This ignition assistance application is much different than the cold start assist function for which most glow ... -
Soot Evolution With Cyclic Crank-Angle-Resolved Two-Color Thermometry in an Optical Diesel Engine Fueled With Biodiesel Blend and ULSD
(The American Society of Mechanical Engineers (ASME), 2012)Biodiesel is a desirable alternative fuel for the diesel engine due to its low engine-out soot emission tendency. When blended with petroleum-based diesel fuels, soot emissions generally decrease ... -
The Effect of Intake Valve Deactivation on Lean Stratified Charge Combustion at an Idling Condition of a Spark Ignition Direct Injection Engine
(The American Society of Mechanical Engineers (ASME), 2012)A combined experimental and analytical study was carried out to understand the improvement in combustion performance of a four-valve spark ignition direct injection (SIDI) wall-guided engine ... -
Rotor Model Validation for an Active Magnetic Bearing Machining Spindle Using Mu-Synthesis Approach
(The American Society of Mechanical Engineers (ASME), 2012)Model-based identification and μ-synthesis are employed for model updating of the rotor for a high-speed machining spindle supported on active magnetic bearings. The experimentally validated model ... -
Controlled Deflection Approach for Rotor Crack Detection
(The American Society of Mechanical Engineers (ASME), 2012)A transverse shaft crack is a serious malfunction that can occur due to cyclic loading, creep, stress corrosion, and other mechanisms to which rotating machines are subjected. Though studied ... -
Influence of In-Plane Dynamics of Thin Compression Rings on Friction in Internal Combustion Engines
(The American Society of Mechanical Engineers (ASME), 2012)The compression ring-bore conjunction accounts for significant frictional parasitic losses relative to its size. The prerequisite to improving the tribological performance of this contact is a ... -
An Integrated Particle-Tracking Impact/Adhesion Model for the Prediction of Fouling in a Subsonic Compressor
(The American Society of Mechanical Engineers (ASME), 2012)The present paper reports on the analysis of the motion of adhesive particles and deposit formation in a 3D linear compressor cascade in order to investigate the fouling in turbomachinery ... -
Optimal Gas-Turbine Design for Hybrid Solar Power Plant Operation
(The American Society of Mechanical Engineers (ASME), 2012)A dynamic simulation model of a hybrid solar gas-turbine power plant has been developed, allowing determination of its thermodynamic and economic performance. In order to examine optimum gas-turbine ... -
Measurement of Flame Frequency Response Functions Under Exhaust Gas Recirculation Conditions
(The American Society of Mechanical Engineers (ASME), 2012)Exhaust gas recirculation has been proposed as a potential strategy for reducing the cost and efficiency penalty associated with postcombustion carbon capture. However, this approach may cause ... -
Passive Effusion Cooling in a Rectangular S-Bend Diffuser
(The American Society of Mechanical Engineers (ASME), 2012)The experimental study considered passive effusion cooling in an S-bend diffusing passage in which ambient cool air was drawn naturally into the S-bend passage with subatmospheric flow distributions. ... -
An Integrated Approach for the Multidisciplinary Design of Optimum Rotorcraft Operations
(The American Society of Mechanical Engineers (ASME), 2012)This work focuses on the development and application of a generic methodology targeting the design of optimum rotorcraft operations in terms of fuel burn, gaseous emissions, and ground noise ... -
The Effects of Wet Compression and Blade Tip Water Injection on the Stability of a Transonic Compressor Rotor
(The American Society of Mechanical Engineers (ASME), 2012)The rotor blade tip leakage flow and associated formation of the tip leakage vortex and interaction of the tip leakage vortex with the shockwave, particularly in the case of a transonic ... -
Integrated Combustor Turbine Design for Improved Aerothermal Performance: Effect of Dilution Air Control
(The American Society of Mechanical Engineers (ASME), 2012)The effect of dilution air control in a combustor on the heat load distribution of an axial turbine with nonaxisymmetric endwall profiling is examined. Endwall profiling is a more common design ...