Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 3361-3380 of 9564
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The J83 Seven-Stage Transonic Compressor
(The American Society of Mechanical Engineers (ASME), 1961)The J83 turbojet engine was a high-performance, lightweight engine with a maximum thrust of 2450 lb, a diameter of 18 in., and a weight of approximately 300 lb. The compressor for this engine ... -
Investigations on the Effects of Inflow Condition and Tip Clearance Size to the Performance of a Compressor Rotor
(The American Society of Mechanical Engineers (ASME), 2014)To clearly clarify the effects of different upstream boundary layer thickness and tip clearance size to the detailed tip flow field and flow mechanism, numerical simulations are performed on a subsonic compressor rotor, ... -
Erratum: “Low Speed Model Testing Studies for an Exit Stage of High Pressure Compressor†[ASME Journal of Engineering for Gas Turbines and Power, 2014, 136(11), p. 112603, DOI: 10.1115/1.4027637]
(The American Society of Mechanical Engineers (ASME), 2014)Figures 12 and 13 on page 6 of the original manuscript contain some errors. The correct figures are as follows: -
Erratum: “Lateral Vibration Attenuation of Shafts Supported by Tilting Pad Journal Bearing With Embedded Electromagnetic Actuators†[ASME Journal of Engineering for Gas Turbines and Power, 2014, 136(4), p. 042503 DOI: 10.1115/1.4026038]
(The American Society of Mechanical Engineers (ASME), 2014)Reference [13] should appear as follows: -
Parametric Studies of Pipe Diffuser on Performance of a Highly Loaded Centrifugal Compressor
(The American Society of Mechanical Engineers (ASME), 2014)Pipe diffusers with several different geometries were designed for a highly loaded centrifugal compressor originally using a wedge diffuser. Parametric studies on the effect of pipe diffuser performance of a highly loaded ... -
Aerodynamic Design of S Shaped Diffusers Using Ball–Spine Inverse Design Method
(The American Society of Mechanical Engineers (ASME), 2014)Recently, an inverse design algorithm called ball–spine algorithm (BSA) was introduced for the design of 2D ducts. In this approach, the walls are considered as a set of virtual balls that can move freely along the ... -
Experimental Study on the Cavitation Characteristics of an Oil Jet Pump With Multiple Nozzles for the Lubrication System in a Steam Turbine
(The American Society of Mechanical Engineers (ASME), 2014)Cavitation characteristics of oil jet pumps with multiple nozzles were studied using high frequency response pressure transducers with Mobile DTE Light Oil in experiment, which has an environment the same as that in the ... -
Centrifugal Turbines for Mini Organic Rankine Cycle Power Systems
(The American Society of Mechanical Engineers (ASME), 2014)Organic Rankine cycle (ORC) power systems are rapidly diffusing as a technology for the conversion of thermal energy sources in the smalltomedium power range, e.g., from 150 kWe up to several MWe. The most critical component ... -
A Numerical Study on the Effect of Bleed System on Starting Ability and Flow Performance of Rampressor Inlet
(The American Society of Mechanical Engineers (ASME), 2014)A unique supersonic compressor rotor with high pressure ratio, termed the Rampressor, is presented by Ramgen Power Systems, Inc., (RPS). Based on the models of Rampressor inlet, the inlet flow field with bleed system is ... -
Simulating Bluff Body Flameholders: On the Use of Proper Orthogonal Decomposition for Wake Dynamics Validation
(The American Society of Mechanical Engineers (ASME), 2014)In this article, we describe a novel use of proper orthogonal decomposition (POD) for validation of the structure of dominant flow features in the wake of a bluffbody flameholder. Largeeddy simulations (LES) using both ... -
On the Design and Matching of Turbocharger Single Scroll Turbines for Pass Car Gasoline Engines
(The American Society of Mechanical Engineers (ASME), 2014)With emission legislation becoming more stringent within the next years, almost all future internal combustion gasoline engines need to reduce specific fuel consumption, most of them by using turbochargers. Additionally, ... -
Modular Bearing Designs to Cope With the New Engine Designs Demanding High Performance, Lead Free Solutions, and Robustness
(The American Society of Mechanical Engineers (ASME), 2014)Engine development, driven by environmental considerations outlined in the different emission regulations, fuel economy, and fuel availability in combination with economical boundary conditions, needs new approaches in ... -
Geometric Mistuning Identification of Integrally Bladed Rotors Using Modified Modal Domain Analysis
(The American Society of Mechanical Engineers (ASME), 2014)Modified modal domain analysis (MMDA) is a novel method for the development of a reduced order model of a bladed rotor with geometric mistuning. This method utilizes proper orthogonal decomposition (POD) of coordinate ... -
Experimental Study of Gas Turbine Combustion With Elevated Fuel Temperatures
(The American Society of Mechanical Engineers (ASME), 2014)The effects of elevated fuel temperatures on the performance and emissions of a Rolls–Royce 501K combustor with a modified fuel injector designed to handle twophase flow is investigated in this study. A series of tests ... -
Aeroengine Multivariable Nonlinear Tracking Control Based on Uncertainty and Disturbance Estimator
(The American Society of Mechanical Engineers (ASME), 2014)The multivariable robust tracking control problem for aeroengine is considered in this paper. On the basis of the aeroengine nonlinear affine uncertain dynamic model, and according to uncertainty and disturbance estimator ... -
Method for Predicting Unsteady Vibration of Gas Turbine Compressor Blades Under Subsonic Near Stall Conditions
(The American Society of Mechanical Engineers (ASME), 2014)Wind tunnel tests and numerical calculations using computational fluid dynamics (CFD) analysis and structural finite element analysis were conducted to clarify the vibration characteristics of gas turbine compressor blades ... -
Traveling Wave Excitation: A Method to Produce Consistent Experimental Results
(The American Society of Mechanical Engineers (ASME), 2014)This paper describes the experimental framework to establish consistent, repeatable results associated with a traveling wave excitation system. The experiment is employed to ascertain the forced response and mistuning ... -
Effects of Mechanical Preloads on the Rotordynamic Performance of a Rotor Supported on Three Pad Gas Foil Journal Bearings
(The American Society of Mechanical Engineers (ASME), 2014)This paper presents the rotordynamic performance measurements and model predictions of a rotor supported on threepad gas foil journal bearings (GFJBs) with various mechanical preloads. The rotor with its length of 240 mm, ... -
Experimental Determination of Liquefied Petroleum Gas–Gasoline Mixtures Knock Resistance
(The American Society of Mechanical Engineers (ASME), 2014)The results of previous experimental researches showed that great advantages can be achieved, both in terms of fuel consumption and pollutant emissions, in bifuel vehicles by means of the doublefuel combustion, i.e., the ... -
Simulating Bluff Body Flameholders: On the Use of Proper Orthogonal Decomposition for Combustion Dynamics Validation
(The American Society of Mechanical Engineers (ASME), 2014)Contemporary tools for experimentation and computational modeling of unsteady and reacting flow open new opportunities for engineering insight into dynamic phenomena. In this article, we describe a novel use of proper ...