Numerical Analyses of Gas Recirculation Effects in Flameless Combustion

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Dehghannezhad Ghahfarokhi, Saeed | 2012

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 43515 (45)
University: Sharif University of Technology
Department: Aerospace Engineering
Advisor(s): Farshchi, Mohammad
Abstract:
Flameless combustion in combustion technology is an innovative method with low nox production that few years provided it passes. In this paper the effects of various parameters on flameless combustion chamber with separate fuel and air jets, has been modeled numerically with the help of Fluent 6.3 software. Differences between traditional combustion and flameless combustion were determined and the flame structure has been studied in different scenarios. In numerical modeling, approach were used to modeling turbulence and eddy dissipation concept (EDC) approach use to modeling combustion and turbulence interaction effects. A global Two-step reaction mechanism for propane and a global one-step reaction mechanism for Bhutan were used to modeling reaction. Finally with the help of this model, the effects of various parameters on flameless combustion were investigated
Keywords:
Flamless Combustion ; Numerical Modeling ; Emission Reduction ; Exhaust Gases Recirculation ; Nox Generating Model

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