Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 6181-6200 of 9564
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Preface: Special ICE Section
(The American Society of Mechanical Engineers (ASME), 2000)In recent years, the ever-increasing socioeconomic pressures for developing cleaner and more efficient means for converting chemical fuel energy into useful mechanical work have resulted in a ... -
A Test Facility for the Measurement of Torques at the Shaft to Seal Interface in Brush Seals
(The American Society of Mechanical Engineers (ASME), 1999)An important factor in the performance of brush seals for a wide range of gas turbine applications is the rate of wear at the seal to shaft interface, which is dependent on the contact ... -
A Quasi-Two-Dimensional Method for the Rotordynamic Analysis of Centered Labyrinth Liquid Seals
(The American Society of Mechanical Engineers (ASME), 1999)The work presents a method for analyzing the dynamic regime of labyrinth liquid seals. By using the traditional simplifying assumptions for the centered seal (sinusoidal, harmonically varying, ... -
Improved Performance Rhenium Containing Single Crystal Alloy Turbine Blades Utilizing PPM Levels of the Highly Reactive Elements Lanthanum and Yttrium
(The American Society of Mechanical Engineers (ASME), 1999)Turbine inlet temperatures have now approached 1650°C (3000°F) at maximum power for the latest large commercial turbofan engines, resulting in high fuel efficiency and thrust levels ... -
High Temperature Proximity Measurement in Aero and Industrial Turbomachinery
(The American Society of Mechanical Engineers (ASME), 1999)The measurement of disc and shaft displacement has been performed for many years as part of the development, commissioning and monitoring of all classes of turbomachinery. This measurement has ... -
Experimental Rotordynamic Coefficient Results for (a) a Labyrinth Seal With and Without Shunt Injection and (b) a Honeycomb Seal
(The American Society of Mechanical Engineers (ASME), 1999)Centrifugal compressors are increasingly required to operate at higher pressures, speeds, and fluid density. In these conditions, compressors are susceptible to rotordynamic instabilities. To remedy ... -
The Effect of Time of Exposure to Elevated Temperatures on the Flammability Limits of Some Common Gaseous Fuels in Air
(The American Society of Mechanical Engineers (ASME), 1999)The flammability limits of methane, ethylene, propane, and hydrogen were experimentally determined at elevated initial mixture temperatures up to 350°C at atmospheric pressure for upward flame ... -
The Development of a Computer Code for the Estimation of Combustor Exhaust Temperature Using Simple Gas Analysis Measurements
(The American Society of Mechanical Engineers (ASME), 1999)Advances in gas turbine technology have led to levels of turbine inlet temperature that preclude the use of thermocouple and simple gas analysis techniques for gas temperature determination. ... -
Conceptual Design of the Cooling System for 1700°C-Class, Hydrogen-Fueled Combustion Gas Turbines
(The American Society of Mechanical Engineers (ASME), 1999)The effects of three types of cooling systems on the calculated operating performances of a hydrogen-fueled thermal power plant with a 1,700°C-class gas turbine were studied with the goal ... -
Distributed Control System for Turbine Engines
(The American Society of Mechanical Engineers (ASME), 1999)A distributed control system (DCS) for a turbine engine has been demonstrated and tested, consisting of prototype electronic interface units (EIUs) connected to data and power busses. In the ... -
Application of Stress Relaxation Testing in Metallurgical Life Assessment Evaluations of GTD111 Alloy Turbine Buckets
(The American Society of Mechanical Engineers (ASME), 1999)Stress relaxation and constant displacement rate tensile tests were performed on polycrystalline GTD111 alloy material removed from General Electric MS6001B first stage combustion turbine buckets. ... -
CFD Modeling of a Gas Turbine Combustor From Compressor Exit to Turbine Inlet
(The American Society of Mechanical Engineers (ASME), 1999)Gas turbine combustor CFD modeling has become an important combustor design tool in the past few years, but CFD models are generally limited to the flow field inside the combustor liner or ... -
Distributed Flight Control and Propulsion Control Implementation Issues and Lessons Learned
(The American Society of Mechanical Engineers (ASME), 1999)This paper addresses the motivations for using a distributed control system architecture, technical challenges, typical functions which are off-loaded to remote terminals, sensor/effector interface ... -
A Numerical Investigation of the Cooling Effect of Compressed Natural Gas Throttling on Engine Delivery Ratio
(The American Society of Mechanical Engineers (ASME), 1999)A theoretical study was conducted to investigate the cooling effect of throttling compressed natural gas during the pressure regulation process. The concept of using this effect in cooling down ... -
Zero-Emission MATIANT Cycle
(The American Society of Mechanical Engineers (ASME), 1999)In this paper, a novel technology based on the zero CO2 emission MATIANT (contraction of the names of the two designers MAThieu and IANTovski) cycle is presented. This latter is basically a ... -
Co-Pyrolysis of Coal/Biomass and Coal/Sewage Sludge Mixtures
(The American Society of Mechanical Engineers (ASME), 1999)Biomass and sewage sludge are attracting increasing interest in power plant technology as a source of carbon-dioxide-neutral fuels. A new way to reduce the consumption of fossil fuels could be ... -
An Investigation of the Formation and Venting of Flammable Mixtures Formed Within Liquid Fuel Vessels
(The American Society of Mechanical Engineers (ASME), 1999)The paper describes results of a parametric study obtained while using an analytical model described earlier (Bunama and Karim, 1997b) investigating the combined effects of mass, energy, and ... -
Cycle Analyses of 5 and 20 MWe Biomass Gasifier-Based Electric Power Stations in Hawaii
(The American Society of Mechanical Engineers (ASME), 1999)Thermodynamic cycle analyses of biomass gasifier-based electric power stations at two scales, nominally 5 and 20 MWe (net electric power output), were performed to assess process performance and ... -
A Numerical Analysis of the Emissions Characteristics of Biodiesel Blended Fuels
(The American Society of Mechanical Engineers (ASME), 1999)Computer simulations were conducted to study the combined effects of methyl soyate (biodiesel) blends with no. 2 diesel fuel on diesel engine (D.I.) performance. Diesel engine emissions and heat ... -
Effect of Air Extraction for Cooling and/or Gasification on Combustor Flow Uniformity
(The American Society of Mechanical Engineers (ASME), 1999)Reducing emissions is an important issue facing gas turbine manufacturers. Almost all of the previous and current research and development for reducing emissions has focused, however, on flow, ...