Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 2101-2120 of 9564
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Discussion on “Beyond Brayton Cycle: It is Time to Change the Paradigm” (S. Can Gülen, ASME J. Eng. Gas Turbine Power, 140(11), p. 111703)
(The American Society of Mechanical Engineers (ASME), 2018) -
A Sensitivity Study of Gas Turbine Exhaust Diffuser-Collector Performance at Various Inlet Swirl Angles and Strut Stagger Angles
(The American Society of Mechanical Engineers (ASME), 2018)This paper describes studies completed using a quarter-scaled rig to assess the impact of turbine exit swirl angle and strut stagger on a turbine exhaust system consisting of an integral diffuser-collector. Advanced testing ... -
Influence of Variable Geometry Compressor on Transient Performance of Counter-Rotating Open Rotor Engines
(The American Society of Mechanical Engineers (ASME), 2018)This work describes a methodology used for counter-rotating (CR) propellers performance estimation. The method is implemented in an in-house program for gas turbine performance prediction, making possible the simulation ... -
Estimation of Forcing Functions on a Mistuned Bladed Rotor From Harmonic Response
(The American Society of Mechanical Engineers (ASME), 2018)This paper deals with the estimation of forcing functions on a mistuned bladed rotor from measurements of harmonic response via Kalman filter (KF) in time domain. An unique feature of this approach is that the number of ... -
Experimental Investigation of Cycle Properties, Noise, and Air Pollutant Emissions of an APS3200 Auxiliary Power Unit
(The American Society of Mechanical Engineers (ASME), 2018)Auxiliary power unit (APU) operators face increasingly stricter airport requirements concerning exhaust gas and noise emission levels. To simultaneously reduce exhaust gas and noise emissions and to satisfy the increasing ... -
A Propeller Model for Steady-State and Transient Performance Prediction of Turboprop and Counter-Rotating Open Rotor Engines
(The American Society of Mechanical Engineers (ASME), 2018)This paper describes a methodology used for propeller performance estimation, which was implemented in an in-house modular program for gas turbine performance prediction. A model based on subsonic generic propeller maps ... -
Transient Thermal Modeling of Ball Bearing Using Finite Element Method
(The American Society of Mechanical Engineers (ASME), 2018)Gas turbines are fitted with rolling element bearings, which transfer loads and supports the shafts. The interaction between the rotating and stationary parts in the bearing causes a conversion of some of the power into ... -
Strongly Coupled Fluid–Structure Interaction in a Three-Dimensional Model Combustor During Limit Cycle Oscillations
(The American Society of Mechanical Engineers (ASME), 2018)Due to the high temperature of the flue gas flowing at high velocity and pressure, the wall cooling is extremely important for the liner of a gas turbine engine combustor. The liner material is heat-resistant steel with ... -
Performance Analysis of a Centrifugal Compressor Based on Circumferential Flow Distortion Induced by Volute
(The American Society of Mechanical Engineers (ASME), 2018)A volute is one of the key components in a centrifugal compressor. The aerodynamic stability of the compressor deteriorates remarkably when a volute is employed. This paper investigates the influence of volute-induced ... -
Rotordynamic Energy Expressions for General Anisotropic Finite Element Systems
(The American Society of Mechanical Engineers (ASME), 2018)It is often desirable to identify the critical components that are active in a particular mode shape or an operational deflected shape (ODS) in a complex rotordynamic system with multiple rotating groups and bearings. The ... -
Influence of Charge Motion and Compression Ratio on the Performance of a Combustion Concept Employing In-Cylinder Gasoline and Natural Gas Blending
(The American Society of Mechanical Engineers (ASME), 2018)The present paper represents a small piece of an extensive experimental effort investigating the dual-fuel operation of a light-duty spark ignited engine. Natural gas (NG) was directly injected into the cylinder and gasoline ... -
High Momentum Jet Flames at Elevated Pressure: Detailed Investigation of Flame Stabilization With Simultaneous Particle Image Velocimetry and OH-LIF
(The American Society of Mechanical Engineers (ASME), 2018)A model FLOX® combustor, featuring a single high momentum premixed jet flame, has been investigated using laser diagnostics in an optically accessible combustion chamber at a pressure of 8 bar. The model combustor was ... -
Investigation of Energy Loss on Fractional Deposition in Last Stages of Condensing Steam Turbine Due to Blade Shape and Moisture Droplet Size
(The American Society of Mechanical Engineers (ASME), 2018)The steam consumption in a turbine within an operating pressure range determines the effectiveness of thermal energy conversion to electric power generation in a turbo-alternator. The low pressure (LP) stage of the steam ... -
Re-Ingestion of Upstream Egress in a 1.5-Stage Gas Turbine Rig
(The American Society of Mechanical Engineers (ASME), 2018)In gas turbines, rim seals are fitted at the periphery of stator and rotor discs to minimize the purge flow required to seal the wheel-space between the discs. Ingestion (or ingress) of hot mainstream gases through rim ... -
Egress Interaction Through Turbine Rim Seals
(The American Society of Mechanical Engineers (ASME), 2018)Engine designers require accurate predictions of ingestion (or ingress) principally caused by circumferential pressure asymmetry in the mainstream annulus. Cooling air systems provide purge flow designed to limit metal ... -
Correcting Turbocharger Performance Measurements for Heat Transfer and Friction
(The American Society of Mechanical Engineers (ASME), 2018)The measured performance maps of turbochargers (TCs), which are commonly used for the matching process with a combustion engine, are influenced by heat transfer and friction phenomena. Internal heat transfer from the hot ... -
Comparison of Experimental and Numerically Predicted Three-Dimensional Wake Behavior of Vertical Axis Wind Turbines
(The American Society of Mechanical Engineers (ASME), 2018)The evolution of the wake of a wind turbine contributes significantly to its operation and performance, as well as to those of machines installed in the vicinity. The inherent unsteady and three-dimensional (3D) aerodynamics ... -
The Influence of Carrier Air Preheating on Autoignition of Inline-Injected Hydrogen–Nitrogen Mixtures in Vitiated Air of High Temperature
(The American Society of Mechanical Engineers (ASME), 2018)The use of highly reactive hydrogen-rich fuels in lean premixed combustion systems strongly affects the operability of stationary gas turbines (GT) resulting in higher autoignition and flashback risks. The present study ... -
Detailed Examination of a Modified Two-Stage Micro Gas Turbine Combustor
(The American Society of Mechanical Engineers (ASME), 2018)Jet-stabilized combustion is a promising technology for fuel flexible, reliable, highly efficient combustion systems. The aim of this work is a reduction of NOx emissions of a previously published two-stage micro gas turbine ... -
Effects of Compressor Fouling and Compressor Turbine Degradation on Engine Creep Life Consumption
(The American Society of Mechanical Engineers (ASME), 2018)The effect of engine degradation in the form of compressor fouling and compressor turbine degradation on the creep life consumption of the high-pressure (HP) turbine blades of an LM2500+ industrial gas turbine engine is ...