Combustion characteristics of H2/N2 and H2/CO syngas nonpremixed flames

Ranga Dinesh, K.K.J. and Jiang, Xi and Kirkpatrick, M.P. and Malalasekera, W. (2012) Combustion characteristics of H2/N2 and H2/CO syngas nonpremixed flames. International Journal of Hydrogen Energy, 37 (21). pp. 16186-16200. ISSN 0360-3199

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Abstract

Turbulent nonpremixed H2/N2 and H2/CO syngas flames were simulated using 3D large eddy simulations coupled with a laminar flamelet combustion model. Four different syngas fuel mixtures varying from H2-rich to CO-rich including N2 have been modelled. The computations solved the Large Eddy Simulation governing equations on a structured non-uniform Cartesian grid using the finite volume method, where the Smagorinsky eddy viscosity model with the localised dynamic procedure is used to model the sub-grid scale turbulence. Non-premixed combustion has been incorporated using the steady laminar flamelet model. Both instantaneous and time-averaged quantities are analysed and data were also compared to experimental data for one of the four H2-rich flames. Results show significant differences in both unsteady and steady flame temperature and major combustion products depending on the ratio of H2/N2 and H2/CO in syngas fuel mixture.

Item Type:
Journal Article
Journal or Publication Title:
International Journal of Hydrogen Energy
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2100/2105
Subjects:
ID Code:
60750
Deposited By:
Deposited On:
17 Dec 2012 08:50
Refereed?:
Yes
Published?:
Published
Last Modified:
01 Jan 2020 08:15