Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 3501-3520 of 9564
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The Effects of Piston Skirt Profiles on Secondary Motion and Friction
(The American Society of Mechanical Engineers (ASME), 2014)Piston skirt form deviating from a perfect cylinder is investigated numerically for an improved frictional performance. Three features defining the barrel and oval form of the skirt are compared in the search for lower ... -
An Investigation of Flow, Mechanical, and Thermal Performance of Conventional and Pressure Balanced Brush Seals
(The American Society of Mechanical Engineers (ASME), 2014)Compliant contacting filament seals such as brush seals are well known to give improved leakage performance and hence specific fuel consumption benefit compared to labyrinth seals. The design of the brush seal must be ... -
New Methods for Automated Fatigue Crack Growth and Reliability Analysis
(The American Society of Mechanical Engineers (ASME), 2014)A new methodology has been developed for automated fatigue crack growth (FCG) life and reliability analysis of components based on finite element (FE) stress and temperature models, weight function stress intensity factor ... -
Coupled Torsional Vibration and Fatigue Damage of Turbine Generator Due to Grid Disturbance
(The American Society of Mechanical Engineers (ASME), 2014)Crack failures continually occur in shafts of turbine generator, where grid disturbance is an important cause. To estimate influences of grid disturbance, coupled torsional vibration and fatigue damage of turbine generator ... -
Modeling and Simulation of the Transient Behavior of an Industrial Power Plant Gas Turbine
(The American Society of Mechanical Engineers (ASME), 2014)This study deals with modeling and simulation of the transient behavior of an Industrial Power Plant Gas Turbine (IPGT). The data used for model setup and validation were taken experimentally during the startup procedure ... -
Reheat Air Brayton Combined Cycle Power Conversion Design and Performance Under Nominal Ambient Conditions
(The American Society of Mechanical Engineers (ASME), 2014)Modern large air Brayton gas turbines have compression ratios ranging from 15 to 40 resulting in compressor outlet temperatures ranging from 350 آ°C to 580 آ°C. Fluoridesaltcooled, hightemperature reactors, molten salt ... -
Résumé of Compressor Research at the NACA Langley Laboratory
(The American Society of Mechanical Engineers (ASME), 1961)This paper describes the compressor research program conducted at the NACA Langley Laboratory and highlights the significant developments obtained prior to the discontinuance of this program in ... -
Experimental Investigation of Liquid Jet Breakup in a Cross Flow of a Swirling Air Stream
(The American Society of Mechanical Engineers (ASME), 2014)This paper presents the results of an experimental investigation of liquid jet breakup in a cross flow of air under the influence of swirl (swirl numbers 0 and 0.2) at a fixed air flow Mach number 0.12 (typical gas turbine ... -
Study of the Variations in Cylinder Exhaust Gas Temperature Over Inlet Air and Operation Input Parameters of Compression Ignition Engines
(The American Society of Mechanical Engineers (ASME), 2014)Cylinderexhaustgas temperature (Texh) of a turbocharged compressionignition engine indicates the levels of engine thermal loading on cylinder and exhaust components, thermal efficiency performance, and engine exhaust ... -
Parametric Effects on Internal Aerodynamics of Lobed Mixer Ejector With Curved Mixing Duct
(The American Society of Mechanical Engineers (ASME), 2014)The internal flow characteristics inside lobed mixerejector with curved mixing duct and the parametric effects on the lobed mixerejector performance are investigated numerically and validated by experimental test. The ... -
Prediction of the NOx Emissions of a Swirl Burner in Partially and Fully Premixed Mode on the Basis of Water Channel Laser Induced Fluorescence and Particle Image Velocimetry Measurements
(The American Society of Mechanical Engineers (ASME), 2014)The paper describes the development and validation of an efficient and cost effective method for the prediction of the NOx emissions of turbulent gas turbine burners in the early burner design phases, which are usually ... -
Effects of Fuel Side N2, CO2, H2O Dilution on Combustion Characteristics and NOx Formation of Syngas Turbulent Nonpremixed Jet Flames
(The American Society of Mechanical Engineers (ASME), 2014)The effects of the three fuelside diluents N2, CO2, and H2O on the accurate flame structure and NOx formation characteristics of the turbulent syngas nonpremixed flames are investigated using the onedimensionalturbulence ... -
Comparison of Mixture and Multifluid Models for In Nozzle Cavitation Prediction
(The American Society of Mechanical Engineers (ASME), 2014)Fuel injectors often feature cavitation because of large pressure gradients, which in some regions lead to extremely low pressures. The main objective of this work is to compare the prediction capabilities of two multiphase ... -
The Development of a Model for the Assessment of Biofouling in Gas Turbine System
(The American Society of Mechanical Engineers (ASME), 2014)A significant problem encountered in the gas turbine industry with fuel products is the degradation of fuel and fuel systems by microorganisms, which are largely bacteria, embedded in biofilms. These microorganisms cause ... -
Effect of Variable Properties Within a Boundary Layer With Large Freestream to Wall Temperature Differences
(The American Society of Mechanical Engineers (ASME), 2014)Modern gasturbine engines are characterized by high coreflow temperatures and significantly lower turbinesurface temperatures. This can lead to large property variations within the boundary layers on the turbine surfaces. ... -
Impact of Wall Temperature on Turbine Blade Tip Aerothermal Performance
(The American Society of Mechanical Engineers (ASME), 2014)Currently the aerodynamics and heat transfer over a turbine blade tip tend to be analyzed separately with the assumption that the wall thermal boundary conditions do not affect the overtipleakage (OTL) flow field. There ... -
Modeling and Estimation of Unmeasured Variables in a Wastegate Operated Turbocharger
(The American Society of Mechanical Engineers (ASME), 2014)Estimation of relevant turbocharger variables is crucial for proper operation and monitoring of turbocharged (TC) engines, which are important in improving fuel economy of vehicles. This paper presents meanvalue models ... -
Effects of Inlet Turbulence and End Wall Boundary Layer on Aerothermal Performance of a Transonic Turbine Blade Tip
(The American Society of Mechanical Engineers (ASME), 2014)Most of the previous researches of inlet turbulence effects on blade tip have been carried out for low speed situations. Recent work has indicated that for a transonic turbine tip, turbulent diffusion tends to have a ... -
Extension of the Combustion Stability Range in Dry Low NOx Lean Premixed Gas Turbine Combustor Using a Fuel Rich Annular Pilot Burner
(The American Society of Mechanical Engineers (ASME), 2014)The present work is concerned with improving combustion stability in lean premixed (LP) gas turbine combustors by injecting free radicals into the combustion zone. The work is a joint experimental and numerical effort aimed ... -
Measurements Versus Predictions for the Static and Dynamic Characteristics of a Four Pad, Rocker Pivot, Tilting Pad Journal Bearing
(The American Society of Mechanical Engineers (ASME), 2014)Measured and predicted static and dynamic characteristics are provided for a fourpad, rockerpivot, tiltingpad journal bearing (TPJB) in the loadonpad (LOP) and loadbetweenpad (LBP) orientations. The bearing has the following ...