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A Nonlinear Model for Fuel Atomization in Spray CombustionMost gas turbine combustion codes rely on ad-hoc statistical assumptions regarding the outcome of fuel atomization processes. The modeling effort proposed in this project is aimed at developing a realistic model to produce accurate predictions of fuel atomization parameters. The model involves application of the nonlinear stability theory to analyze the instability and subsequent disintegration of the liquid fuel sheet that is produced by fuel injection nozzles in gas turbine combustors. The fuel sheet is atomized into a multiplicity of small drops of large surface area to volume ratio to enhance the evaporation rate and combustion performance. The proposed model will effect predictions of fuel sheet atomization parameters such as drop size, velocity, and orientation as well as sheet penetration depth, breakup time and thickness. These parameters are essential for combustion simulation codes to perform a controlled and optimized design of gas turbine fuel injectors. Optimizing fuel injection processes is crucial to improving combustion efficiency and hence reducing fuel consumption and pollutants emissions.
Document ID
20030063093
Acquisition Source
Glenn Research Center
Document Type
Abstract
Authors
Liu, Nan-Suey
(NASA Glenn Research Center Cleveland, OH, United States)
Ibrahim, Essam A.
(Tuskegee Inst. AL, United States)
Sree, Dave
(Tuskegee Inst. AL, United States)
Date Acquired
August 21, 2013
Publication Date
February 1, 2003
Publication Information
Publication: HBCUs/OMUs Research Conference Agenda and Abstracts
Subject Category
Numerical Analysis
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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