Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 3961-3980 of 9564
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Rotordynamic Force Coefficients of Bubbly Mixture Annular Pressure Seals
(The American Society of Mechanical Engineers (ASME), 2012)As oil fields deplete, in particular in deep sea reservoirs, pump and compression systems work under more strenuous conditions with gas in liquid and liquid in gas mixtures, mostly inhomogeneous. ... -
Investigation of Cooling Effectiveness of Gas Turbine Inlet Fogging Location Relative to the Silencer
(The American Society of Mechanical Engineers (ASME), 2012)The output and efficiency of gas turbines are reduced significantly during the summer, especially in areas where the daytime temperature reaches as high as 50°C. Gas turbine inlet fogging ... -
Air Flow Modulation for Refined Control of the Combustion Dynamics Using a Novel Actuator
(The American Society of Mechanical Engineers (ASME), 2012)A specific actuator able to modulate the air feed of a gas a burner at a given frequency and amplitude is presented. The Combustion Department at the Institute for Thermal Turbomachinery and ... -
The Influence of Inlet Fogging for the Stable Range in a Transonic Compressor Stage
(The American Society of Mechanical Engineers (ASME), 2012)The inlet fogging effects on the stable range of a NASA transonic compressor stage, Stage 35, are numerically simulated and analyzed in this paper. The 3D two-phase flow fields in the compressor ... -
Development of a Statistical Methodology for Gas Turbine Prognostics
(The American Society of Mechanical Engineers (ASME), 2012)To optimize both production and maintenance, from both a technical and an economical point of view, it would be advisable to predict the future health condition of a system and of its ... -
Highly Efficient IGFC Hybrid Power Systems Employing Bottoming Organic Rankine Cycles With Optional Carbon Capture
(The American Society of Mechanical Engineers (ASME), 2012)This study examines the performance of a solid oxide fuel cell- (SOFC-) based integrated gasification power plant concept at the utility scale (>100 MW). The primary system concept evaluated ... -
Integrating Systems Engineering Into the USAF Academy Capstone Gas Turbine Engine Course
(The American Society of Mechanical Engineers (ASME), 2012)This paper is intended to serve as a template for incorporating technical management majors into a traditional engineering design course. In 2002, the Secretary of the Air Force encouraged the ... -
An Improved Core Reaction Mechanism for Saturated C0 -C4 Fuels
(The American Society of Mechanical Engineers (ASME), 2012)Accurate chemistry models are required to predict the combustion behavior of different fuels, such as synthetic gaseous fuels and liquid jet fuels. A detailed reaction mechanism contains chemistry ... -
Comparative Validation Study on Identification of Premixed Flame Transfer Function
(The American Society of Mechanical Engineers (ASME), 2012)The flame transfer function (FTF) of a premixed swirl burner was identified from a time series generated with computational fluid dynamics simulations of compressible, turbulent, reacting flow ... -
Parametric Simulation of Turbulent Reacting Flow and Emissions in a Lean Premixed Reverse Flow Type Gas Turbine Combustor
(The American Society of Mechanical Engineers (ASME), 2012)This paper describes simulation of a small stationary gas turbine combustor of a reverse flow, semi-silo type for power generation. The premixed coherent flame model (PCFM) is applied for ... -
Experimental Characterization of Fuel-Air Mixing in a Multihole Tube
(The American Society of Mechanical Engineers (ASME), 2012)The multihole tube is an important component used for lean premixed prevaporized low-emission combustion in micro gas turbines, as it plays a key role in establishing uniform fuel-air mixture ... -
Increasing the Passive Scalar Mixing Quality of Jets in Crossflow With Fluidics Actuators
(The American Society of Mechanical Engineers (ASME), 2012)Jets in crossflow are widely used in the industry for homogenization or cooling tasks. Recently, pulsating jets have been investigated as a mean to increase the scalar mixing efficiency of ... -
Detection and Identification of Faults in NPP Instruments Using Kernel Principal Component Analysis
(The American Society of Mechanical Engineers (ASME), 2012)In this paper, kernel principal component analysis (KPCA) is studied for fault detection and identification of the instruments in nuclear power plants. A KPCA model for fault isolation and ... -
Oxygen Enhanced Exhaust Gas Recirculation for Compression Ignition Engines
(The American Society of Mechanical Engineers (ASME), 2012)The benefits of oxygen enhancement in conjunction with EGR on emissions were investigated in a single-cylinder direct injection diesel engine. Cylinder pressure, NOx , and particulate were measured ... -
Effects of Contact Interface Parameters on Vibration of Turbine Bladed Disks With Underplatform Dampers
(The American Society of Mechanical Engineers (ASME), 2012)The design of high cycle fatigue resistant bladed disks requires the ability to predict the expected damping of the structure in order to evaluate the dynamic behavior and ensure structural ... -
Development and Performance Measurement of Oil-Free Turbocharger Supported on Gas Foil Bearings
(The American Society of Mechanical Engineers (ASME), 2012)This paper present the development of an oil-free turbocharger (TC) supported on gas foil bearings (GFBs) and its performance evaluation in a test rig driven by a diesel vehicle engine (EG). ... -
Rotordynamic Evaluation of Centrifugal Compressor Using Electromagnetic Exciter
(The American Society of Mechanical Engineers (ASME), 2012)Since heavier gases exert larger effects on rotordynamic stability, stability evaluation is important in developing or designing high-pressure compressors. To evaluate the rotor stability during ... -
Modeling Shear Heating in Piston Skirts EHL Considering Different Viscosity Oils in Initial Engine Start Up
(The American Society of Mechanical Engineers (ASME), 2012)A fully established elastohydrodynamic lubricating (EHL) film between the piston and the liner surfaces during normal engine operation minimizes piston slap and prevents adhesive wear. Wear cannot ... -
A Short Method to Compute Nusselt Numbers in Rectangular and Annular Channels With Any Ratio of Constant Heat Rate
(The American Society of Mechanical Engineers (ASME), 2012)An analytic investigation of the thermal exchanges in channels is conducted with the prospect of building a simple method to determine the Nusselt number in steady, laminar or turbulent and ... -
Dual Time Stepping Algorithms With the High Order Harmonic Balance Method for Contact Interfaces With Fretting-Wear
(The American Society of Mechanical Engineers (ASME), 2012)Contact interfaces with dry friction are frequently used in turbomachinery. Dry friction damping produced by the sliding surfaces of these interfaces reduces the amplitude of bladed-disk vibration. ...