Journal of Engineering for Gas Turbines and Power: Recent submissions
Now showing items 3841-3860 of 9564
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Numerical Modeling of Fluid Induced Rotordynamic Forces in Seals With Large Aspect Ratios
(The American Society of Mechanical Engineers (ASME), 2013)Traditional annular seal models are based on bulk flow theory. While these methods are computationally efficient and can predict dynamic properties fairly well for short seals, they lack accuracy in cases of seals with ... -
Nuclear Power Plants With Closed-Cycle Helium Turbine for Industrial Energy Supply
(The American Society of Mechanical Engineers (ASME), 1971)All the possible arrangements of closed-cycle helium turbines for combined power and steam generation can be reduced to three variations of one single arrangement. A method for the optimum ... -
Simple Parametric Model for Quick Assessment of IGCC Performance
(The American Society of Mechanical Engineers (ASME), 2013)Even though almost all components of an integrated gasification combined cycle (IGCC) power plant are proven and mature technologies, the sheer number of them, the wide variety of competing technologies (e.g., gasifiers, ... -
An Expanded Cost of Electricity Model for Highly Flexible Power Plants
(The American Society of Mechanical Engineers (ASME), 2013)Cost of electricity (COE) is the most widely used metric to quantify the costperformance tradeoff involved in comparative analysis of competing electric power generation technologies. Unfortunately, the currently accepted ... -
Analysis of Direct Carbon Fuel Cell Based Coal Fired Power Cycles With CO2 Capture
(The American Society of Mechanical Engineers (ASME), 2013)This work presents an analysis of the application of direct carbon fuel cells (DCFC) to large scale, coal fueled power cycles. DCFCs are a type of high temperature fuel cell featuring the possibility of being fed directly ... -
Performance Measurements of a Unique Louver Particle Separator for Gas Turbine Engines
(The American Society of Mechanical Engineers (ASME), 2013)Solid particles, such as sand, ingested into gas turbine engines, reduce the coolant flow in the turbine by blocking cooling channels in the secondary flow path. One method to remove solid particles from the secondary flow ... -
Active Piezoelectric Vibration Control of Subscale Composite Fan Blades
(The American Society of Mechanical Engineers (ASME), 2013)As part of the Fundamental Aeronautics program, researchers at NASA Glenn Research Center (GRC) are investigating new technologies supporting the development of lighter, quieter, and more efficient fans for turbomachinery ... -
Modeling Spray Formation in Gas Turbines—A New Meshless Approach
(The American Society of Mechanical Engineers (ASME), 2013)A new meshless Lagrangian particle code has been developed to tackle the challenging numerical modeling of primary atomization. In doing so the correct treatment and representation of the interfacial physics are crucial ... -
A Numerical Study on the Turbulent Schmidt Numbers in a Jet in Crossflow
(The American Society of Mechanical Engineers (ASME), 2013)This work presents a numerical study on the turbulent Schmidt numbers in jets in crossflow. This study contains two main parts. In the first part, the problem of the proper choice of the turbulent Schmidt number in the ... -
Study of Fuel Composition Effects on Flashback Using a Confined Jet Flame Burner
(The American Society of Mechanical Engineers (ASME), 2013)Flashback is the main operability issue associated with converting lean, premixed combustion systems from operation on natural gas to operation on high hydrogen content fuels. Most syngas fuels contain some amount of ... -
Boundary Layer Optimization for the Design of High Turning Axial Flow Compressor Blades
(The American Society of Mechanical Engineers (ASME), 1971)An optimization method, based on Le Foll’s boundary layer theory and on Goldstein’s conformal mapping method is described. The parameters of optimization are circulation per blade and absolute ... -
Prediction of Blow Offs of Bluff Body Stabilized Flames Utilizing Close Coupled Injection of Liquid Fuels
(The American Society of Mechanical Engineers (ASME), 2013)This paper describes the development of an empirical approach that attempts to predict blowout of bluff body stabilized flames using global flow parameters in systems where liquid fuel injectors are located a short distance ... -
Numerical Investigation of the Parameter Governing the Ignitability of a Spray Flame
(The American Society of Mechanical Engineers (ASME), 2013)This paper contains a numerical examination concerning the ignition behavior of a spray nozzle mounted in a rectangular channel under atmospheric conditions, which is run with Jet A1. On the basis of a comprehensive data ... -
A Unified Procedure for the Calculation of Off-Design Performance of Radial Turbomachinery
(The American Society of Mechanical Engineers (ASME), 1971)An analytical technique is presented which permits calculating the off-design performance of radial, or mixed, flow centrifugal compressers and pumps. The method is based on the variation of ... -
In Memoriam
(The American Society of Mechanical Engineers (ASME), 2013)Joseph Katz Chair, Board of ASME Transactions' EditorsWilliam F. Ward Sr. Professor Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD -
Performance of a Multiple Injection Dry Low NOx Combustor With Hydrogen Rich Syngas Fuels
(The American Society of Mechanical Engineers (ASME), 2013)An oxygenblown integrated coal gasification combined cycle (IGCC) plant with precombustion carbon dioxide capture and storage (CCS) is one of the most promising means of zeroemission generation of power from coal. In an ... -
Discussion: “Power-Plant Performance Monitoring” (Salisbury, J. Kenneth, 1961, ASME J. Eng. Power, 83, pp. 409–421)
(The American Society of Mechanical Engineers (ASME), 1961) -
Measured and Predicted Secondary Flows in a Centrifugal Impeller
(The American Society of Mechanical Engineers (ASME), 1971)The complete velocity distribution, including both primary and secondary velocities, has been measured in passages of centrifugal impellers of simple shape. Comparison is made with theoretically ... -
A Method for Predicting Compressor Cascade Total Pressure Losses When the Inlet Relative Mach Number Is Greater Than Unity
(The American Society of Mechanical Engineers (ASME), 1971)During the last few years, considerable progress has been made in predicting the total pressure losses from viscous effects for axial-flow compressor cascades. With the advent of the transonic ... -
Laminar Incompressible Flow in the Entrance Region of Ducts of Arbitrary Cross Section
(The American Society of Mechanical Engineers (ASME), 1971)A combination of the numerical technique of Chorin for the solution of the Navier-Stokes equations and a transformation of the initial value problem to a boundary value problem is shown to ...