Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 6521-6540 of 9564
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Receptance Method for the Sensitivity Analysis of Critical Speeds to Rotor Support Stiffness
(The American Society of Mechanical Engineers (ASME), 1997)A rotor system can be studied via various approaches, e.g., FEM, the transfer matrix method, etc. The receptance method has been one of the methods used for frequency analysis of rotors. The ... -
Dynamic Fatigue Testing of Candidate Ceramic Materials for Turbine Engines to Determine Slow-Crack-Growth Parameters
(The American Society of Mechanical Engineers (ASME), 1997)The purpose of this study was to evaluate the mechanical strength and slow-crack-growth parameter values for two commercially available silicon nitrides, SN-88 and NT164, at three high-temperature ... -
Techniques Used in Achieving a High Specific Airflow for High-Output, Medium-Speed Diesel Engines
(The American Society of Mechanical Engineers (ASME), 1967)This paper discusses the factors which influence the airflow through the cylinder heads, and valves, on high-output, medium-speed diesel engines and the techniques used to achieve a high specific ... -
Thermal Cycling Effects on Dynamic Mechanical Properties and Crystallographic Structures of Silicon Nitride-Based Structural Ceramics
(The American Society of Mechanical Engineers (ASME), 1997)Thermal cycling effects on dynamic mechanical properties of hot pressed silicon nitride (HPSN) based structural ceramics were investigated in a simulated thermal cycling environment from room ... -
Nonlinear Valve Train Dynamics Simulation With a Distributed Parameter Model of Valve Springs
(The American Society of Mechanical Engineers (ASME), 1997)A simulation model of valve train dynamics was developed in order to investigate the vibrational behavior of a valve train under heavy normal load, especially for heavy-duty diesel engines. The ... -
A Numerical Investigation of the Startup Transient in a Wave Rotor
(The American Society of Mechanical Engineers (ASME), 1997)The startup process is investigated for a hypothetical four-port wave rotor, envisioned as a topping cycle for a small gas turbine engine. The investigation is conducted numerically using a ... -
Multidimensional Modeling of Combustion for a Six-Mode Emissions Test Cycle on a DI Diesel Engine
(The American Society of Mechanical Engineers (ASME), 1997)Numerical simulations of direct injection (DI) heavy-duty diesel engine combustion over the entire engine operating range were conducted using the KIVA code, with modifications to the spray, ... -
PI Control of HSFDs for Active Control of Rotor-Bearing Systems
(The American Society of Mechanical Engineers (ASME), 1997)This paper describes the proportional integral (PI) control of hybrid squeeze film dampers (HSFDS) for active control of rotor vibrations. Recently it was shown that the automatically controlled ... -
Indicators of Fuel Maldistribution in Spark-Ignition Engines
(The American Society of Mechanical Engineers (ASME), 1997)Several exhaust-emissions-based parameters were experimentally found to be good indicators for fuel maldistribution (both in-cylinder and cylinder-to-cylinder) in spark-ignition engines. The quality ... -
A Numerical Investigation of Premixed Combustion in Wave Rotors
(The American Society of Mechanical Engineers (ASME), 1997)Wave rotor cycles that utilize premixed combustion processes within the passages are examined numerically using a one-dimensional CFD-based simulation. Internal-combustion wave rotors are envisioned ... -
Methods of Turbocharging With Special Reference to Large Two-Stroke Diesel Engines
(The American Society of Mechanical Engineers (ASME), 1967)In view of the steady increase in the mean pressures, the systems employed for turbo-charging diesel engines have been progressively developed. A number of methods have been applied, both to ... -
Investigation of Wedge Probe Wall Proximity Effects: Part 2—Numerical and Analytical Modeling
(The American Society of Mechanical Engineers (ASME), 1997)An experimental study of wedge probe wall proximity effects is described in Part 1 of this paper. Actual size and large-scale model probes were tested to understand the mechanisms responsible ... -
The Advanced Cooling Technology for the 1500°C Class Gas Turbines: Steam-Cooled Vanes and Air-Cooled Blades
(The American Society of Mechanical Engineers (ASME), 1997)It is very essential to raise the thermal efficiency of combined cycle plants from the viewpoint of energy saving and environmental protection. Tohoku Electric Power Co., Inc., and Toshiba ... -
A Semiclosed-Cycle Gas Turbine With Carbon Dioxide–Argon as Working Fluid
(The American Society of Mechanical Engineers (ASME), 1997)This paper describes the performance analysis of a semiclosed-cycle gas turbine. The working fluid is carbon dioxide and the fuel is low heating value gas synthesized from coal. The objective ... -
Final Report of the Key Technology Development Program for a Next-Generation High-Temperature Gas Turbine
(The American Society of Mechanical Engineers (ASME), 1997)There is a strong demand for efficient and clean power-generating systems to meet recent energy-saving requirements and environmental regulations. A combined cycle power plant is one of the best ... -
An Improved Epicyclic Gearbox for Reduced and Controllable Subsynchronous Vibrations in Gas Turbogenerator Applications
(The American Society of Mechanical Engineers (ASME), 1997)An improvement is made to the design of an epicyclic gearbox that limits the dynamic eccentricities of gearbox components. Gearboxes were manufactured to the new design and tested, showed reduced ... -
A Pump Instability Theory Using an Acoustic Feedback Mechanism
(The American Society of Mechanical Engineers (ASME), 1997)A subsynchronous vibration problem with a large water injection pump was solved in 1974 by modifying the discharge piping transition to a long taper configuration. This paper describes a ... -
Design and Test of a New Axial Compressor for the Nuovo Pignone Heavy-Duty Gas Turbines
(The American Society of Mechanical Engineers (ASME), 1997)This axial compressor design was primarily focused to increase the power rating of the current Nuovo Pignone PGT10 Heavy-Duty gas turbine by 10 percent. In addition, the new 11-stage design ... -
The Telemetering of Information From a Working Internal-Combustion Engine
(The American Society of Mechanical Engineers (ASME), 1967)This paper describes the problems implicit in obtaining information on movement, temperature, and strain from the reciprocating parts of internal-combustion engines, and considers the various methods ... -
A Normalized Modal Eigenvalue Approach for Resolving Modal Interaction
(The American Society of Mechanical Engineers (ASME), 1997)Modal interaction refers to the way that the modes of a structure interact when its geometry and material properties are perturbed. The amount of interaction between the neighboring modes depends ...