The effect of oxidant flow rate on a coaxial oxy-fuel flame

The effect of oxidant flow rate on temperature, heat transfer, and NO x formation of an oxy-fuel flame is investigated using numerical simulation. The finite volume approach is used to solve the governing equations. The realizable k-ε turbulence model and β-PDF model are adopted to simulate the turb...

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Bibliographic Details
Published in:Heat and mass transfer 2012-09, Vol.48 (9), p.1615-1626
Main Authors: Hashemi, S. A., Fattahi, A., Sheikhzadeh, G. A., Mehrabian, M. A.
Format: Article
Language:English
Subjects:
Engineering
Engineering Thermodynamics
Heat and Mass Transfer
Industrial Chemistry/Chemical Engineering
Original
Thermodynamics
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Summary:The effect of oxidant flow rate on temperature, heat transfer, and NO x formation of an oxy-fuel flame is investigated using numerical simulation. The finite volume approach is used to solve the governing equations. The realizable k-ε turbulence model and β-PDF model are adopted to simulate the turbulence-combustion interaction. There is a good agreement between the present numerical results and the reference experimental data. The exhaust temperature is decreased with decreasing the oxidant inlet flow rate. As an important result, the adiabatic flame temperature can be considered a key parameter in the oxy-fuel flame applications. Also, it is observed that increasing oxygen inlet angle causes a decrease in NO formation.
ISSN:0947-7411
1432-1181
DOI:10.1007/s00231-012-1008-8