Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 4281-4300 of 9564
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Reactivity Accident in a High Temperature Gas-Cooled Reactor Due to Inadvertent Withdrawal of Control Rod
(The American Society of Mechanical Engineers (ASME), 2011)Reactivity accident due to inadvertent withdrawal of the control rod is one kind of the design basis accident for high temperature gas-cooled reactors, which should be analyzed carefully in ... -
The Study on Abrasive Water Jet for Predicting the Cutting Performance and Monitoring the Cutting Situation in the Water
(The American Society of Mechanical Engineers (ASME), 2011)The abrasive water jet (AWJ), is to shoot the abrasive mixed with high-pressure water to the material for cutting, can cut most materials, such as metals and concretes in water with long ... -
HTR-TN Achievements and Prospects for Future Developments
(The American Society of Mechanical Engineers (ASME), 2011)It is already 10 years since the (European) High Temperature Reactor Technology Network (HTR-TN) launched a program for development of HTR technology, which expanded through three successive ... -
Direct Outer Ring Cooling of a High Speed Jet Engine Mainshaft Ball Bearing: Experimental Investigation Results
(The American Society of Mechanical Engineers (ASME), 2011)Operating conditions in high speed mainshaft ball bearings applied in new aircraft propulsion systems require enhanced bearing designs and materials. Rotational speeds, loads, demands on higher ... -
Real-Time IMEP Estimation and Control Using an In-Cylinder Pressure Sensor for a Common-Rail Direct Injection Diesel Engine
(The American Society of Mechanical Engineers (ASME), 2011)An in-cylinder pressure-based control method is capable of improving engine performance, as well as reducing harmful emissions. However, this method is difficult to be implemented in a conventional ... -
Thermal Management and Rotordynamic Performance of a Hot Rotor-Gas Foil Bearings System—Part I: Measurements
(The American Society of Mechanical Engineers (ASME), 2011)Implementation of gas foil bearings (GFBs) into micro gas turbines requires careful thermal management with accurate measurements verifying model predictions. This two-part paper presents test data ... -
Study of a Two-Phase Flow Pump and Separator System
(The American Society of Mechanical Engineers (ASME), 2011)The Aero-Thermo-Mechanics (ATM) Department of ULB (Université Libre de Bruxelles) is developing an original system to pump and separate a two-phase flow. Many applications need to extract a ... -
Thermal Management and Rotordynamic Performance of a Hot Rotor-Gas Foil Bearings System—Part II: Predictions Versus Test Data
(The American Society of Mechanical Engineers (ASME), 2011)Implementation of gas foil bearings (GFBs) in microgas turbines relies on physics based computational models anchored to test data. This two-part paper presents test data and analytical results ... -
Vapor Phase Deposition Using a Plasma Spray Process
(The American Society of Mechanical Engineers (ASME), 2011)Plasma spray-physical vapor deposition (PS-PVD) is a low pressure plasma spray technology recently developed by Sulzer Metco AG (Switzerland) to deposit coatings out of the vapor phase. PS-PVD ... -
Hot Streak Migration in a Turbine Stage: Integrated Design to Improve Aerothermal Performance
(The American Society of Mechanical Engineers (ASME), 2011)Hot streaks can cause localized hot spots on the blade surfaces in a high pressure turbine, increasing the heat load locally and even leading to material loss in regions such as the rotor ... -
Methane Oxycombustion for Low CO2 Cycles: Blowoff Measurements and Analysis
(The American Society of Mechanical Engineers (ASME), 2011)Increasing concerns about climate change have encouraged interest in zero-CO2 emission hydrocarbon combustion techniques. In one approach, nitrogen is removed from the combustion air and replaced ... -
Describing Function Analysis of Limit Cycles in a Multiple Flame Combustor
(The American Society of Mechanical Engineers (ASME), 2011)A recently developed nonlinear flame describing function (FDF) is used to analyze combustion instabilities in a system where the feeding manifold has a variable size and where the flame is ... -
Measurement and Simulation of Turbulent Mixing in a Jet in Crossflow
(The American Society of Mechanical Engineers (ASME), 2011)Computational fluid dynamics (CFD) has an important role in current research. While large eddy simulations (LES) are now common practice in academia, Reynolds-averaged Navier–Stokes (RANS) simulations ... -
A Computational Parametric Analysis of the Vibration of a Three-Spool Aero-Engine Under Multifrequency Unbalance Excitation
(The American Society of Mechanical Engineers (ASME), 2011)The integration of squeeze-film dampers (SFDs) in aero-engine assemblies is a highly cost-effective means of introducing damping in an otherwise lightly damped structure. However, their deployment ... -
The Impact of Density Ratio on the Liquid Core Dynamics of a Turbulent Liquid Jet Injected Into a Crossflow
(The American Society of Mechanical Engineers (ASME), 2011)Atomizing liquids by injecting them into crossflows is a common approach in gas turbines and augmentors. Much of our current understanding of the processes resulting in atomization of the jets, ... -
Numerical Analysis of the Effects of Nonuniform Surface Roughness on Compressor Stage Performance
(The American Society of Mechanical Engineers (ASME), 2011)Gas turbine performance degradation over time is mainly due to the deterioration of compressor and turbine blades, which, in turn, causes a modification of the compressor and turbine performance ... -
Metallurgical Evaluation and Condition Assessment of FSX 414 Nozzle Segments in Gas Turbines by Metallographic Methods
(The American Society of Mechanical Engineers (ASME), 2011)Gas turbine components such as nozzle segments, buckets, transition pieces, and combustion liners experience damages such as creep, fatigue, high temperature oxidation, and corrosion. The reliability, ... -
Improving the Design of a High Pressure Casing With the Help of Finite Element Analysis to Ensure the Rotor Dynamic Stability of a High Pressure Centrifugal Compressor Equipped With a Hole Pattern Seal
(The American Society of Mechanical Engineers (ASME), 2011)This paper focuses on the casing geometry of high pressure compressors. It is common practice to use damper seals, typically the hole pattern type, at the balance piston to ensure the stability ... -
Development of a 125 kW AMB Expander/Generator for Waste Heat Recovery
(The American Society of Mechanical Engineers (ASME), 2011)The development and testing of an integrated power module (IPM) for a waste heat recovery system is described. The IPM is part of a waste heat recovery system based on the organic Rankine ... -
Centrifugal Compressors During Fast Transients
(The American Society of Mechanical Engineers (ASME), 2011)Transient studies for compressor systems allow the prediction of the compressor system behavior during fast transients such as they occur during emergency shutdowns. For the system simulations, ...