Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 3101-3120 of 9564
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Part Load Performance and Operating Strategies of a Natural Gas—Biomass Dual Fueled Microturbine for Combined Heat and Power Generation
(The American Society of Mechanical Engineers (ASME), 2015)The focus of this paper is on the part load performance of a small scale (100 kWe) combined heat and power (CHP) plant fired by natural gas (NG) and solid biomass to serve a residential energy demand. The plant is based ... -
Effect of Temperature on Microparticle Rebound Characteristics at Constant Impact Velocity—Part I
(The American Society of Mechanical Engineers (ASME), 2015)Many gas turbine engines operate in harsh environments where the engines ingest solid particles. Ingested particles accelerate the deterioration of engine components and reduce the engine's service life. Understanding ... -
Correlation Analysis of Multiple Sensors for Industrial Gas Turbine Compressor Blade Health Monitoring
(The American Society of Mechanical Engineers (ASME), 2015)This paper summarizes an analysis of data obtained from an instrumented compressor of an operational, heavy duty industrial gas turbine; the goal of the aforementioned analysis is to understand some of the fundamental ... -
Aerodynamics of Centrifugal Turbine Cascades
(The American Society of Mechanical Engineers (ASME), 2015)The centrifugal turbine architecture is a promising solution for smalltomedium organic Rankine cycle (ORC) power systems. The inherent compactness of the multistage arrangement makes this configuration very attractive for ... -
Natural Cooling and Startup of Steam Turbines: Validity of the Over Conductivity Function
(The American Society of Mechanical Engineers (ASME), 2015)The temperature drop during natural cooling and the way in which the steam turbine restarts have a major impact on the cyclic lifetime of critical parts and on the cyclic life of the whole machine. In order to ensure the ... -
Design, Modeling, Fabrication, Back to Back Test of a Magnetic Bearing System for High Speed BLDCM Application
(The American Society of Mechanical Engineers (ASME), 2015)This paper describes in detail the design, construction, and testing of an active magnetic bearing (AMB) system for highspeed permanent magnet (PM) brushless DC motor (BLDCM) application. A backtoback (BTB) test setup which ... -
Transient Amplitude Amplification of Mistuned Blisks
(The American Society of Mechanical Engineers (ASME), 2015)This article discusses the problem of exceeding amplitudes of mistuned structures caused by accelerated traveling waves type excitation, i.e., traveling waves with time variant frequencies. These waves cause resonance ... -
A Robust Design Optimization Framework for Systematic Model Based Calibration of Engine Control Systems
(The American Society of Mechanical Engineers (ASME), 2015)In this paper, a systematic modelbased calibration framework basing on robust design optimization technique is developed for engine control system. In this framework, the control system is calibrated in an optimization ... -
Investigation of Lean Premixed Swirl Stabilized Hydrogen Burner With Axial Air Injection Using OH PLIF Imaging
(The American Society of Mechanical Engineers (ASME), 2015)In the context of lean premixed combustion, the prevention of upstream flame propagation in the premixing zone, referred to as flashback (FB), is a crucial challenge related to the application of hydrogen as a fuel for gas ... -
Active Vibration Control of the Flexible Rotor to Pass the First Bending Critical Speed in High Energy Density Magnetically Suspended Motor
(The American Society of Mechanical Engineers (ASME), 2015)In order to minimizing the rotor displacement and the amplifier current mainly caused by the unbalance forces when the flexible rotor passes the first bending critical speed, the optimal controller is presented in this ... -
Fault Analysis and Optimal Balancing of Bowing of Steam Turbine Rotor Under Long Term Service
(The American Society of Mechanical Engineers (ASME), 2015)In recent years, bowing of steam turbine rotor under long time service occurs in several highparameter units. Collected data show that the bending of the haywire rotor is increasing continuously, which results in excessive ... -
Improving the Efficiency of Low Temperature Combustion Engines Using a Chamfered Ring Land
(The American Society of Mechanical Engineers (ASME), 2015)In the present study, a chamfered piston crown design was used in order to reduce unburned hydrocarbon (UHC) emissions from the ringpack crevice. Compared to the conventional piston design, the chamfered piston showed ... -
Fuel Sensitive Ignition Delay Models for a Local and Global Description of Direct Injection Internal Combustion Engines
(The American Society of Mechanical Engineers (ASME), 2015)Models for ignition delay are investigated and fuelspecific properties are included to predict the effects of different fuels on the ignition delay. These models follow the Arrhenius type expression for the ignition delay ... -
A Computational Study of the Mixture Preparation in a Direct–Injection Hydrogen Engine
(The American Society of Mechanical Engineers (ASME), 2015)This paper reports the validation of a threedimensional numerical simulation of the mixture preparation in a directinjection (DI) hydrogenfueled engine. Computational results from the commercial code CONVERGE are compared ... -
Combustion Characteristics of Lean Burn and Stoichiometric With Exhaust Gas Recirculation Spark Ignited Natural Gas Engines
(The American Society of Mechanical Engineers (ASME), 2015)Natural gas (NG) has been widely used in reciprocating engines for various applications such as automobile, electricity generation, and gas compression. It is in the public interest to burn fuels more efficiently and at ... -
Predictions of Flow Separation at the Valve Seat for Steady State Port Flow Simulation
(The American Society of Mechanical Engineers (ASME), 2015)Steadystate portflow simulations with static valve lift are often utilized to optimize the performance of intake system of an internal combustion engine. Generally, increase in valve lift results in higher mass flow rate ... -
Piston Ring and Groove Side Wear Analysis for Diesel Engines
(The American Society of Mechanical Engineers (ASME), 2015)Piston ring wear is a major factor determining a diesel engine's life. A ring is subjected to wear between its front face and the cylinder wall as well as at the interfaces between the ring and groove top and bottom flanks. ... -
The Dynamics of Second Ring Flutter and Collapse in Modern Diesel Engines
(The American Society of Mechanical Engineers (ASME), 2015)Second ring fluttering and radial ring collapse are recognized as having significant influences on engine blowby and oil consumption. As the gas flow is coupled with the piston ring motion, understanding the ring dynamics ... -
Effect of Premixed Fuel Preparation for Partially Premixed Combustion With a Low Octane Gasoline on a Light Duty Multicylinder Compression Ignition Engine
(The American Society of Mechanical Engineers (ASME), 2015)Gasoline compression ignition (GCI) concepts with the majority of the fuel being introduced early in the cycle are known as partially premixed combustion (PPC). Previous research on singleand multicylinder engines has shown ... -
Three Dimensional Piston Ring–Cylinder Bore Contact Modeling
(The American Society of Mechanical Engineers (ASME), 2015)Increasing durability, preventing knocking combustion, improving fuel efficiency, and reducing pollutant emission characterize the needs for modern internal combustion engine design. These factors are highly influenced by ...