Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 3281-3300 of 9564
-
Mechanical Behavior of Dissimilar Welds for Steam Turbine Rotors With High Application Temperature
(The American Society of Mechanical Engineers (ASME), 2015)Fossil fired steam power plants of the latest generation require the elevation of steam parameters pressure and temperature to increase efficiency as well as to reduce greenhouse gas emissions. In order to achieve these ... -
Application of an Advanced Creep–Fatigue Procedure for Flexible Design of Steam Turbine Rotors Based on Fracture Mechanics Methods
(The American Society of Mechanical Engineers (ASME), 2015)The demand for steam turbine components is driven not only by high efficiency but also by high plant operational flexibility. Steam turbine rotors are therefore exposed to increased temperatures and increased number of ... -
Numerical Investigations on the Leakage and Rotordynamic Characteristics of Pocket Damper Seals—Part II: Effects of Partition Wall Type, Partition Wall Number, and Cavity Depth
(The American Society of Mechanical Engineers (ASME), 2015)Effects of partition wall type, partition wall number and cavity depth on the leakage and rotordynamic characteristics of the pocket damper seal (PDS) were numerically investigated using a presented 3D transient computational ... -
Slow Crack Growth of a Pyroceram Glass Ceramic Under Static Fatigue Loading—Commonality of Slow Crack Growth in Advanced Ceramics
(The American Society of Mechanical Engineers (ASME), 2015)An extensive experimental work for Pyroceram™ 9606 glass–ceramic was conducted to determine static fatigue at ambient temperature in distilled water. This work was an extension and companion of the previous work conducted ... -
Numerical Investigations on the Leakage and Rotordynamic Characteristics of Pocket Damper Seals—Part I: Effects of Pressure Ratio, Rotational Speed, and Inlet Preswirl
(The American Society of Mechanical Engineers (ASME), 2015)Effects of pressure ratio, rotational speed and inlet preswirl on the leakage and rotordynamic characteristics of a eightbladed fully partitioned pocket damper seal (FPDS) were numerically investigated using proposed ... -
Prediction of Gas Thrust Foil Bearing Performance for Oil Free Automotive Turbochargers
(The American Society of Mechanical Engineers (ASME), 2015)Green technologies are a mandate in a world concerned with saving resources and protecting the environment. Oilfree turbocharger (TC) systems for passenger and commercial vehicles dispense with the lubricant in the internal ... -
Pressurized SOFC Hybrid Systems: Control System Study and Experimental Verification
(The American Society of Mechanical Engineers (ASME), 2015)In this paper, two different advanced control approaches for a pressurized solid oxide fuel cell (SOFC) hybrid system are investigated and compared against traditional proportional integral derivative (PID). Both advanced ... -
Thermo Economic Evaluation of Solar Thermal and Photovoltaic Hybridization Options for Combined Cycle Power Plants
(The American Society of Mechanical Engineers (ASME), 2015)The hybridization of combinedcycle power plants with solar energy is an attractive means of reducing carbon dioxide (CO2) emissions from gasbased power generation. However, the construction of the first generation of ... -
Erosion Testing of Thermal Barrier Coatings in a High Enthalpy Wind Tunnel
(The American Society of Mechanical Engineers (ASME), 2015)One of the major problems facing the users of aircraft engines and stationary gas turbines in dusty and dirty environments is erosion, causing engine performance deterioration. Thermal barrier coatings (TBCs) are often ... -
Design of Experiments to Investigate Geometric Effects on Fluid Leakage Rate in a Balance Drum Seal
(The American Society of Mechanical Engineers (ASME), 2015)Annular labyrinth seals are designed as tortuous paths that force a working fluid to expand and contract repeatedly through small clearances between high and low pressure stages of turbomachinery. The resulting expansion ... -
Investigation of Hydrogen Enriched Natural Gas Flames in a SGT 700/800 Burner Using OH PLIF and Chemiluminescence Imaging
(The American Society of Mechanical Engineers (ASME), 2015)The effect of hydrogen enrichment to natural gas flames was experimentally investigated at atmospheric pressure conditions using flame chemiluminescence imaging, planar laserinduced fluorescence of hydroxyl radicals (OH ... -
Modeling the Gas Turbine Engine Under Its Dynamic Heating Conditions
(The American Society of Mechanical Engineers (ASME), 2015)A modern gas turbine engine (GTE) is a complex nonlinear dynamic system with the mutual effect of gasdynamic and thermal processes in its components. The engine development requires the precise realtime simulation of all ... -
Development and Experimental Investigation of a Tubular Combustor for Pyrolysis Oil Burning
(The American Society of Mechanical Engineers (ASME), 2015)The growing demand for more economical and environmentally friendly power generation forces the industry to search for fuels that can replace the conventional fossil fuels. This has led to significant developments in the ... -
Visualization of Different Flashback Mechanisms for H2/CH4 Mixtures in a Variable Swirl Burner
(The American Society of Mechanical Engineers (ASME), 2015)Flame flashback from the combustion chamber to the premixing section is a major operability issue when using high H2 content fuels in lean premixed combustors. Depending on the flowfield in the combustor, flashback can be ... -
Modeling and Simulation of the Dynamic Operating Behavior of a High Solar Share Gas Turbine System
(The American Society of Mechanical Engineers (ASME), 2015)Solar gas turbine (GT) systems provide the opportunity to utilize solar heat at a much higher temperature than solar thermal power plants based on steam turbine cycles. Therefore, GT technology has the potential to improve ... -
Laminar Burning Velocities and Emissions of Hydrogen–Methane–Air–Steam Mixtures
(The American Society of Mechanical Engineers (ASME), 2015)Humidified gas turbines using steam generated from excess heat feature increased cycle efficiencies. Injecting the steam into the combustor reduces NOx emissions, flame temperatures, and burning velocities, promising a ... -
A Comprehensive Investigation of Preswirled Flow Through Rotating Radial Holes
(The American Society of Mechanical Engineers (ASME), 2015)This paper reports on the flow (centrifugal = radially outward, centripetal = radially inward) through rotating radial orifices with and without preswirl in the flow approaching the orifice in the outer annulus. ... -
Probabilistic Analysis of the Secondary Air System of a Low Pressure Turbine
(The American Society of Mechanical Engineers (ASME), 2015)The present investigation aims at performing a probabilistic analysis of the secondary air system (SAS) of a threestage lowpressure turbine rotor in a jet engine. Geometrical engine to engine variations due to the tolerance ... -
Analysis Versus Synthesis for Trending of Gas Path Measurement Time Series
(The American Society of Mechanical Engineers (ASME), 2015)Gaspath measurements used to assess the health condition of an engine are corrupted by noise. Generally, a data cleaning step occurs before proceeding with fault detection and isolation. Classical linear filters such as ... -
An Algebraic Approach to Fault Detection for Surge Avoidance in Turbo Compressor
(The American Society of Mechanical Engineers (ASME), 2015)This paper presents an innovative algebraic sensor fault detection approach for surge avoidance in turbo compressors (TC) in the natural gas compressor stations (GCS). The main objective is surge avoidance in the presence ...