Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 3761-3780 of 9564
-
Impact of Refinery Stream Gasoline Property Variation on Load Sensitivity of the HCCI Combustion
(The American Society of Mechanical Engineers (ASME), 2013)The homogeneous charge compression ignition (HCCI) combustion process is highly reliant upon a favorable incylinder thermal environment in an engine, for a given fuel. Commercial fuels can differ considerably in composition ... -
Dynamic Heat Exchanger Model for Any Combination of Water and Steam States
(The American Society of Mechanical Engineers (ASME), 2013)The purpose of this study is to propose a dynamic heat transfer model for predicting transient heat recovery steam generator (HRSG) behaviors involving phase changes in heat exchanger tubes. The model deals with any ... -
Investigation of Physical and Chemical Delay Periods of Different Fuels in the Ignition Quality Tester
(The American Society of Mechanical Engineers (ASME), 2013)This paper investigates the physical and chemical ignition delay (ID) periods in the constant volume combustion chamber of the Ignition Quality Tester (IQT). IQT was used to determine the derived cetane number (DCN) according ... -
Aircraft Propulsion System Flight Test—Analysis and Evaluation Challenges and Integrated Solutions
(The American Society of Mechanical Engineers (ASME), 2013)The paper describes the challenges and solution methodologies associated with the flight test and evaluation of the propulsion system for a twinengine military legacy aircraft. Recent flighttest programs evaluated the ... -
Discussion: “The Application of the Deviation Concept of Turbine Cycle Monitoring” (Hoffman, H. T., and Welch, C. P., 1961, ASME J. Eng. Power, 83, pp. 423–430)
(The American Society of Mechanical Engineers (ASME), 1961) -
Integration of a Dual Mode SI HCCI Engine Into Various Vehicle Architectures
(The American Society of Mechanical Engineers (ASME), 2013)A simulation study was performed to evaluate the potential fuel economy benefits of integrating a dualmode SIHCCI engine into various vehicle architectures. The vehicle configurations that were considered include a ... -
Feasibility Study of an Oil Free Turbocharger Supported on Gas Foil Bearings Via On Road Tests of a Two Liter Class Diesel Vehicle
(The American Society of Mechanical Engineers (ASME), 2013)This paper presents the feasibility study of an oilfree turbocharger (TC) supported on gas foil bearings (GFBs) via onroad tests of a 2liter class diesel vehicle. The oilfree TC is constructed using a hollow rotor with a ... -
Numerical Study of the Implementation of an Active Control Turbocharger on Automotive Diesel Engines
(The American Society of Mechanical Engineers (ASME), 2013)Active control turbocharger (ACT) has been proposed as a way to improve turbocharger performance under highly pulsating exhaust flows. This technique implies that the variable geometry mechanism in the turbine is used to ... -
The Influence of Reynolds Number and Roughness on the Efficiency of Axial and Centrifugal Fans—A Physically Based Scaling Method
(The American Society of Mechanical Engineers (ASME), 2013)There is a technical and economical need for a correction method to scale model test data, which fulfills five tasks: It should be (i) physically based, (ii) understandable and easy to apply, and (iii) universal, i.e., ... -
Reduced Order Modeling of a Bladed Rotor With Geometric Mistuning Via Estimated Deviations in Mass and Stiffness Matrices
(The American Society of Mechanical Engineers (ASME), 2013)This paper deals with further development of modified modal domain analysis (MMDA), which is a breakthrough method in the reduced order modeling of a bladed rotor with geometric mistuning. The main focus of this paper is ... -
Load Rejection Tests and Their Dynamic Simulations With a 150 kW Class Microsteam Turbine
(The American Society of Mechanical Engineers (ASME), 2013)A simulation method for load rejection with a 150 kW class radial inflow steam turbine system was proposed to determine over rotational speed at load rejection. Simulations were carried out for several parameters of ... -
Reconditioning Technologies for Film Cooled Single Crystal Turbine Blading
(The American Society of Mechanical Engineers (ASME), 2013)Increased availability, reliability, and performance combined with reduced maintenance costs are key factors for the success of gas turbine users. This paper focuses on the reconditioning of film cooled single crystal (SX) ... -
A Methodology to Improve the Robustness of Gas Turbine Engine Performance Monitoring Against Sensor Faults
(The American Society of Mechanical Engineers (ASME), 2013)For turbine engine performance monitoring purposes, system identification techniques are often used to adapt a turbine engine simulation model to some measurements performed while the engine is in service. Doing so, the ... -
Analysis of Flow Migration in an Ultra Compact Combustor
(The American Society of Mechanical Engineers (ASME), 2013)The ultracompact combustor (UCC) has the potential to offer improved thrusttoweight and overall efficiency in a turbojet engine. The thrusttoweight improvement is due to a reduction in engine weight by shortening the ... -
Evaluation of Computational Fluid Dynamics and Coupled Fluid Solid Modeling for a Direct Transfer Preswirl System
(The American Society of Mechanical Engineers (ASME), 2013)The prediction of the preswirl cooling air delivery and disk metal temperature are important for the cooling system performance and the rotor disk thermal stresses and life assessment. In this paper, standalone 3D steady ... -
Durability of Oxide/Oxide Ceramic Matrix Composites in Gas Turbine Combustors
(The American Society of Mechanical Engineers (ASME), 2013)An integrated creep rupture strength degradation and water vapor degradation model for gas turbine oxidebased ceramic matrix composite (CMC) combustor liners was expanded with heat transfer computations to establish the ... -
Advanced Combustor Concepts for Low Emissions Supersonic Propulsion
(The American Society of Mechanical Engineers (ASME), 2013)Novel leanburn combustor concepts were designed and evaluated for supersonic aircraft propulsion, with a focus on cruise NOx emissions. Premixing to lean conditions is especially challenging at supersonic cruise because ... -
Study of Gas/Liquid Behavior Within an Aeroengine Bearing Chamber
(The American Society of Mechanical Engineers (ASME), 2013)Aeroengine bearing chambers typically contain bearings, seals, shafts and static parts. Oil is introduced for lubrication and cooling and this creates a two phase flow environment that may contain droplets, mist, film, ... -
Steady State and Transient Behavior of Gas/Liquid Phase Boundaries in Impulse Pipes
(The American Society of Mechanical Engineers (ASME), 2013)For boiling water reactors (BWR) and steam generators, the water level is a safetyrelevant process variable. The most commonly applied measuring method is based on the calculation of the liquid level from geodetic pressure ... -
Crackle Noise in Heated Supersonic Jets
(The American Society of Mechanical Engineers (ASME), 2013)Crackle noise from heated supersonic jets is characterized by the presence of strong positive pressure impulses resulting in a strongly skewed farfield pressure signal. These strong positive pressure impulses are associated ...