Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 3141-3160 of 9564
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Investigating Fuel Condensation Processes in Low Temperature Combustion Engines
(The American Society of Mechanical Engineers (ASME), 2015)Condensation of gaseous fuel is investigated in a low temperature combustion (LTC) engine fueled with double directinjected diesel and premixed gasoline at two load conditions. Possible condensation is examined by considering ... -
Fundamental Explorations of Spring Varied, Free Piston Linear Engine Devices
(The American Society of Mechanical Engineers (ASME), 2015)The conventional crankbased internal combustion engine faces many challenges to remain a viable option for electric power generation. Limitations in mechanical, thermal, and combustion efficiencies must be overcome by ... -
Parametric Study of Injection Rates With Solenoid Injectors in an Injection Quantity and Rate Measuring Device
(The American Society of Mechanical Engineers (ASME), 2015)A Moehwald HDA (HDA is a German acronym: Hydraulischer Druckanstieg: hydraulic pressure increase) injection quantity and rate measuring unit is used to investigate injection rates obtained with a fastacting, preproduction ... -
Organic Rankine Cycle Power Systems: From the Concept to Current Technology, Applications, and an Outlook to the Future
(The American Society of Mechanical Engineers (ASME), 2015)The cumulative global capacity of organic Rankine cycle (ORC) power systems for the conversion of renewable and waste thermal energy is undergoing a rapid growth and is estimated to be approx. 2000 MWe considering only ... -
The Effects of Fuel Injection Pressure and Fuel Type on the Combustion Characteristics of a Diesel Engine
(The American Society of Mechanical Engineers (ASME), 2015)In an effort to understand the effects of injection system pressure on alternative fuel performance, a singlecylinder diesel engine was outfit with a modern common rail fuel injection system and piezoelectric injector. As ... -
A Generalized Prediction Method for Rotordynamic Coefficients of Annular Gas Seals
(The American Society of Mechanical Engineers (ASME), 2015)The improvement in rotordynamic performance of the annular gas seal requires efficient and accurate prediction methods of rotordynamic coefficients. Although the existed transient computational fluid dynamics (CFD) methods ... -
Multi Objective Aerodynamic Optimization Design and Data Mining of a High Pressure Ratio Centrifugal Impeller
(The American Society of Mechanical Engineers (ASME), 2015)An automated threedimensional multiobjective optimization and data mining method is presented by integrating a selfadaptive multiobjective differential evolution algorithm (SMODE), 3D parameterization method for blade ... -
Investigation of Tabs in Short Annular Diffusers With Swirling Flow
(The American Society of Mechanical Engineers (ASME), 2015)Square tabs were placed on the base of an ellipsoidal centerbody (CB) in short annular diffusers. Tests were conducted in subsonic swirling flow with an inlet Reynolds number of 1 أ— 105. The tabs, with a projected ... -
Rotordynamic Behavior of 225 kW (300 HP) Class PMS Motor–Generator System Supported by Gas Foil Bearings
(The American Society of Mechanical Engineers (ASME), 2015)This paper presents the dynamic behavior of a 225 kW class (300 HP), 60,000 rpm, permanent magnet synchronous (PMS) motor–generator system supported on gas foil bearings (GFBs). The rotor of a 225 kW PMS motor is supported ... -
Nonlinear Analysis of Rub Impact in a Three Disk Rotor and Correction Via Bearing and Lubricant Adjustment
(The American Society of Mechanical Engineers (ASME), 2015)Rubbing between rotating and stationary surfaces in turbomachinery can result in catastrophic failures if not caught quickly. Removing the rub impact can then often require time consuming and expensive solutions including ... -
Thermal and Flow Phenomena Associated With the Behavior of Brush Seals in Aero Engine Bearing Chambers
(The American Society of Mechanical Engineers (ASME), 2015)Due to the increasing fuel cost and environmental targets, the demand for more efficient gas turbines has risen considerably in the last decade. One of the most important systems in a gas turbine is the secondary air system, ... -
Dynamic Leakage Analysis of Noncontacting Finger Seals Based on Dynamic Model
(The American Society of Mechanical Engineers (ASME), 2015)Noncontacting finger seals are new compliant seal in gas turbine engine sealing technology. Their potential hydrodynamic and hydrostatic lifting capabilities make them preferable to brush seals and contacting finger seals. ... -
A Simplified and Consistent Nonlinear Transient Analysis Method for Gas Bearing: Extension to Flexible Rotors
(The American Society of Mechanical Engineers (ASME), 2015)A simplified, new method for evaluating the nonlinear fluid forces in air bearings was recently proposed (Hassini, M. A., and Arghir, M., 2012, “Simplified Nonlinear Transient Analysis Method for Gas Bearings,†ASME ... -
Real Time Control of Maximum Heat Release Rate and Its Influence on Emission Dispersions in Diesel Engines
(The American Society of Mechanical Engineers (ASME), 2015)Unexpected combustions dispersion due to variations in fuel quality, production tolerance, and aging of components results in the deterioration of engine performance and increases harmful emissions. Many researchers have ... -
Misfire Detection of Spark Ignition Engines Using a New Technique Based on Mean Output Power
(The American Society of Mechanical Engineers (ASME), 2015)Control and detection of misfire are an essential part of onboard diagnosis (OBD) of modern spark ignition (SI) engines. This study proposes a novel modelbased technique for misfire detection for a multicylinder SI engine. ... -
Large Eddy Simulation of Turbulent Mixing of a Jet in Cross Flow
(The American Society of Mechanical Engineers (ASME), 2015)An Eulerian–Lagrangian mathematical/computational methodology is employed for largeeddy simulation (LES) and detailed study of turbulent mixing in jet in crossflow (JICF) configuration. Accurate prediction of mixing in ... -
Helical Flow Disturbances in a Multinozzle Combustor
(The American Society of Mechanical Engineers (ASME), 2015)This paper describes an experimental investigation of a transversely forced, swirl stabilized combustor. Its objective is to compare the unsteady flow structures in single and triple nozzle combustors and determine how ... -
An Investigation on Sensitivity of Ignition Delay and Activation Energy in Diesel Combustion
(The American Society of Mechanical Engineers (ASME), 2015)The autoignition process plays a major role in the combustion, performance, fuel economy, and emission in diesel engines. The autoignition quality of different fuels has been rated by its cetane number (CN) determined in ... -
Improving the Performance of a Biogas Powered Dual Fuel Diesel Engine Using Emulsified Rice Bran Biodiesel as Pilot Fuel Through Adjustment of Compression Ratio and Injection Timing
(The American Society of Mechanical Engineers (ASME), 2015)Emulsification is one of the proven techniques to control the pollutants of the diesel engines. The present work attempts to explore the effect of injection timing (IT) of pilot fuel and compression ratio (CR) for an ... -
Performance of Multiple Injection Dry Low NOx Combustors on Hydrogen Rich Syngas Fuel in an IGCC Pilot Plant
(The American Society of Mechanical Engineers (ASME), 2015)The successful development of coalbased integrated gasification combined cycle (IGCC) technology requires gas turbines capable of achieving the dry low nitrogen oxides (NOx) combustion of hydrogenrich syngas fuels for low ...