Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 4661-4680 of 9564
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Effects of the Re-Entrant Bowl Geometry on a DI Turbocharged Diesel Engine Performance and Emissions—A CFD Approach
(The American Society of Mechanical Engineers (ASME), 2010)The purpose of this study is to investigate the influence of re-entrant bowl geometry on both engine performance and combustion efficiency in a direct injection (DI), turbocharged diesel engine ... -
Prediction of Performance From PRB Coal Fired in Utility Boilers With Various Furnace and Firing System Arrangements
(The American Society of Mechanical Engineers (ASME), 2010)The present regulatory requirements enforce the modification of the firing modes of existing coal-fired utility boilers and the use of coals different from those originally designed for these ... -
Erratum: “Influence of Blade Deterioration on Compressor and Turbine Performance” [Journal of Engineering for Gas Turbines and Power, 2010, 132(3), p. 032401]
(The American Society of Mechanical Engineers (ASME), 2010)The correct form of the equation which defines ηC (reported on p. 10, first column, line 2 of the printed version) is the following:ηC=h(T0(n+1)s)−h(T01)h(T0(n+1))−h(T01) -
Fouling Formation in 575 MV Tangential-Fired Pulverized-Coal Boiler
(The American Society of Mechanical Engineers (ASME), 2010)Due to the liberalization of the energy markets and the globalization of coal procurement, fuel management became of substantial importance to power plant operators, which are faced with new ... -
On Model Design of a Surrogate Fuel Formulation
(The American Society of Mechanical Engineers (ASME), 2010)Calculations of evaporation characteristics (distillation curve, two-phase diagram, and critical points) of surrogates are described in detail. The efficiency of some surrogate blends, represented ... -
Effect of CO2 Dilution on Flame Structure and Soot and NO Formations in CH4-Air Nonpremixed Flames
(The American Society of Mechanical Engineers (ASME), 2010)In the present work, a numerical analysis has been presented to show the variations in flame structure, flame radiation, and formations of soot and NO in methane-air laminar nonpremixed flames ... -
Effects of Inlet Preswirl and Cell Diameter and Depth on Honeycomb Seal Characteristics
(The American Society of Mechanical Engineers (ASME), 2010)Three-dimensional Reynolds-averaged Navier–Stokes solutions are employed to investigate the discharge and total temperature increase characteristics of the stepped labyrinth seal with honeycomb land. ... -
Precombustion Chamber Design for Emissions Reduction From Large Bore NG Engines
(The American Society of Mechanical Engineers (ASME), 2010)Precombustion chambers (PCCs) are an ignition technology for large bore, natural gas engines, which can extend the lean operating limit through improved combustion stability. Previous research ... -
Biodiesel Effects on Influencing Parameters of Brake Fuel Conversion Efficiency in a Medium Duty Diesel Engine
(The American Society of Mechanical Engineers (ASME), 2010)Biodiesel remains an alternative fuel of interest for use in diesel engines. A common characteristic of biodiesel, relative to petroleum diesel, is a lowered heating value (or per mass energy ... -
Measurement Selection for Engine Transients by Parameter Signatures
(The American Society of Mechanical Engineers (ASME), 2010)A method of measurement selection is introduced that relies on parameter signatures to assess the identifiability of dynamic model parameters by different outputs. A parameter signature is a ... -
The Cumulative Effects of Forcing Function, Damping, and Mistuning on Blade Forced Response in a High Speed Centrifugal Compressor With Inlet Distortion
(The American Society of Mechanical Engineers (ASME), 2010)The vibratory response amplitude of a blade under forced response conditions depends primarily on the aerodynamic excitation amplitude, on damping, and on the effects of mistuning. The work ... -
Time Averaged Net Heat Flux Reduction for Unsteady Film Cooling
(The American Society of Mechanical Engineers (ASME), 2010)Film cooling flow for reduction in heat flux to a gas turbine engine hot gas path component is generally assumed to be steady. However, unsteady film cooling may occur due to naturally ... -
Design of Three-Pad Hybrid Air Foil Bearing and Experimental Investigation on Static Performance at Zero Running Speed
(The American Society of Mechanical Engineers (ASME), 2010)Air foil bearings (AFBs) have been explored for various micro- to midsized turbomachinery for decades, and many successful applications of the AFBs to small turbomachinery were also reported. ... -
Assessment of Tesla Turbine Performance for Small Scale Rankine Combined Heat and Power Systems
(The American Society of Mechanical Engineers (ASME), 2010)For solar Rankine cycle combined heat and power systems for residential buildings and other small-scale applications (producing 1–10 kWe), a low manufacturing cost, robust, and durable expander ... -
Mistuning Forced Response Characteristics Analysis of Mistuned Bladed Disks
(The American Society of Mechanical Engineers (ASME), 2010)The problem of determining the worst-case mistuning pattern and robust maximum mistuning forced response of a mistuned bladed rotor is formulated and solved as an optimization problem. This ... -
Constrained Design Optimization of Rotor-Tilting Pad Bearing Systems
(The American Society of Mechanical Engineers (ASME), 2010)Design of a rotor-bearing system is a challenging task due to various conflicting design requirements, which should be fulfilled. This study considers an automatic optimization approach for the ... -
A Multiobjective Adaptive Controller for Magnetic Bearing Systems
(The American Society of Mechanical Engineers (ASME), 2010)The paper considers three issues in flexible rotor and magnetic bearing systems, namely, the control of rotor vibration, control of transmitted forces, and prevention of rotor contact with ... -
On the Performance of Porous Sound Absorbent Material in High Temperature Applications
(The American Society of Mechanical Engineers (ASME), 2010)This paper discusses the use of novel porous sound absorbent ceramic tiles as heat shields in combustion chambers with respect to their sound absorption. For this purpose, a theory describing ... -
Effects of Acoustic Excitation on a Swirling Diffusion Flame
(The American Society of Mechanical Engineers (ASME), 2010)A swirling double concentric jet is commonly used for nonpremixed gas burner application for safety reasons and to improve the combustion performance. Fuel is generally spurted at the central ... -
Comparison of Linear Stability Analysis With Experiments by Actively Tuning the Acoustic Boundary Conditions of a Premixed Combustor
(The American Society of Mechanical Engineers (ASME), 2010)Linear stability analysis by means of low-order network models is widely spread in industry and academia to predict the thermoacoustic characteristics of combustion systems. Even though a vast ...