Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 4001-4020 of 9564
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Numerical Investigation of a Centrifugal Compressor With Holed Casing Treatment
(The American Society of Mechanical Engineers (ASME), 2012)The holed casing treatment is a new type of casing treatment that has self-adaptability for a centrifugal compressor with unshrouded impeller. It was demonstrated experimentally and numerically ... -
Eddy Current Damper for Turbine Blading: Electromagnetic Finite Element Analysis and Measurement Results
(The American Society of Mechanical Engineers (ASME), 2012)In the dynamics of turbomachinery, the mechanical damping of the blading has been the focus of research for the last decades to improve the dynamic performance in terms of high cycle fatigue ... -
Predicting Blade Leading Edge Erosion in an Axial Induced Draft Fan
(The American Society of Mechanical Engineers (ASME), 2012)Induced draft fans extract coal fired boiler combustion products, including particles of un-burnt coal and ash. As a consequence of the particles, the axial fan blades’ leading edges are subject ... -
Stall Inception, Evolution and Control in a Low Speed Axial Fan With Variable Pitch in Motion
(The American Society of Mechanical Engineers (ASME), 2012)Obtaining the right pitch in turbomachinery blading is crucial to efficient and successful operations. Engineers adjust the rotor’s pitch angle to control the production or absorption of power. ... -
Effects of Wind Turbine Starting Capability on Energy Yield
(The American Society of Mechanical Engineers (ASME), 2012)The purpose of this study was to investigate the effect of turbine starting capability on overall energy-production capacity. The investigation was performed through the development and validation ... -
Application of an Optimal Tuner Selection Approach for On-Board Self-Tuning Engine Models
(The American Society of Mechanical Engineers (ASME), 2012)An enhanced design methodology for minimizing the error in on-line Kalman filter-based aircraft engine performance estimation applications is presented in this paper. It specifically addresses the ... -
Selection of Climatic Design Points for Gas Turbine Power Augmentation
(The American Society of Mechanical Engineers (ASME), 2012)There is a widespread interest in the application of gas turbine power augmentation technologies such as evaporative cooling and mechanical chilling in the mechanical drive and power generation ... -
Wind Turbine Gearbox Fault Detection Using Multiple Sensors With Features Level Data Fusion
(The American Society of Mechanical Engineers (ASME), 2012)Fault detection in complex mechanical systems such as wind turbine gearboxes remains challenging, even with the recently significant advancement of sensing and signal processing technologies. As ... -
The Deduction of the Integral and the Estimation of the Local Core Rotation Ratio by Telemetric Pressure Measurements in a Two Cavity Test Rig
(The American Society of Mechanical Engineers (ASME), 2012)The heat transfer in rotating cavities, as found in the internal air system of gas turbines, is mainly governed by the flow passing through these specific machine structures. The core rotation ... -
Rotordynamic Force Coefficients for Three Types of Annular Gas Seals With Inlet Preswirl and High Differential Pressure Ratio
(The American Society of Mechanical Engineers (ASME), 2012)The following paper presents and compares rotordynamic force coefficients for three types of non-contact annular gas seals, which include a labyrinth (LABY), honeycomb (HC), and a fully partitioned ... -
Numerical Simulations of Turbulent Mixing and Autoignition of Hydrogen Fuel at Reheat Combustor Operating Conditions
(The American Society of Mechanical Engineers (ASME), 2012)Turbulent mixing and autoignition of H2-rich fuels at relevant reheat combustor operating conditions are investigated in the present numerical study. The flow configuration under consideration is ... -
Experimental Investigation on the Effects of a Large Recirculating Area on the Performance of an Effusion Cooled Combustor Liner
(The American Society of Mechanical Engineers (ASME), 2012)An experimental analysis of a realistic engine cooling scheme was performed on a test article replicating a slot injection and an effusion array with a central large dilution hole. A test ... -
Experimental Analysis of Confined Jet Flames by Laser Measurement Techniques
(The American Society of Mechanical Engineers (ASME), 2012)An experimental analysis of confined premixed turbulent methane/air and hydrogen/air jet flames is presented. A generic lab scale burner for high-velocity preheated jets equipped with an optical ... -
An Experimental Study of Lean Blowout With Hydrogen-Enriched Fuels
(The American Society of Mechanical Engineers (ASME), 2012)Lean premixed combustion is widely used to achieve a better compromise between nitric oxide (NOx ) emissions and combustion efficiency (related to CO levels). However, combustor operation near ... -
Autoignition Limits of Hydrogen at Relevant Reheat Combustor Operating Conditions
(The American Society of Mechanical Engineers (ASME), 2012)The use of highly reactive fuels in the lean premixed combustion systems employed in stationary gas turbines can lead to many practical problems, such as unwanted autoignition in regions not ... -
A Comparative Study of Flamelet and Finite Rate Chemistry LES for a Swirl Stabilized Flame
(The American Society of Mechanical Engineers (ASME), 2012)Present-day demands on combustion equipment are increasing the need for improved understanding and prediction of turbulent combustion. Large eddy simulation (LES), in which the large-scale flow ... -
Detection of Combustion Resonance Using an Ion Current Sensor in Diesel Engines
(The American Society of Mechanical Engineers (ASME), 2012)This paper discusses the use of an ion current sensor to detect combustion resonance in a heavy duty direct injection diesel engine. A modified glow plug is used to measure the ion current ... -
Real-Time Execution of a High Fidelity Aero-Thermodynamic Turbofan Engine Simulation
(The American Society of Mechanical Engineers (ASME), 2012)In the past, a typical way of executing simulations in a real-time environment had been to use transfer function models, state-variable models, or reduced-order aero-thermodynamic models. These ... -
Experimental and Modeling Studies of the Oxidation of Surrogate Bio-Aviation Fuels
(The American Society of Mechanical Engineers (ASME), 2012)Jet fuels currently in use in the aviation industry are exclusively kerosene-based. However, potential problems regarding security of supply, climate change, and increasing cost are becoming more ... -
A Novel Bulk-Flow Model for Improved Predictions of Force Coefficients in Grooved Oil Seals Operating Eccentrically
(The American Society of Mechanical Engineers (ASME), 2012)Oil seals in centrifugal compressors reduce leakage of the process gas into the support bearings and ambient. Under certain operating conditions of speed and pressure, oil seals lock, becoming ...