VERIFICATION OF REDUCED METHANE KINETIC MECHANISM UNDER LAMINAR CONDITIONS USING A LOW DIMENSIONAL MODELING APPROACH
Naveen Punati
USG Corporate Innovation Center, Libertyville, IL, USA, 60048
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Reduced/Skeletal kinetic mechanisms are of great interest to the research community, as these mechanism reduce the computational cost significantly. The study presented here considered a reduced kinetic mechanism under laminar flow conditions and resolves the full range length and time scales by solving governing equations for mass, momentum and energy. The reduced mechanism published in the literature is derived from the original GRI mechanism of methane gas and the simulations are performed with both original and reduced order mechanisms. The combustion of H2 gas at elevated temperature is considered and the spatial and temporal resolutions are identified to be 1e-6 m and 2e-7 seconds respectively. Spatial profiles of reactants, product and temperature, from both simulations, are compared and quantitatively the profiles are in good agreement indicating the mechanism can be employed in the place of original GRI mechanism for some problems, reducing the computational cost significantly.
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