Effects of CO₂ Dilution on the Premixed Combustion of CH₄ in Microcombustor

Abstract:

A numerical study on premixed combustion of CH₄ + CO₂ + Air in two dimensional is done. Parameters of inlet velocity and temperature of fuel and combustor geometry and size are considers the same but the CO₂ dilution rate changes. Results of this simulation shows that while the CO₂ dilution rate increases, flame temperature and velocity decrease. There is a limitation for increasing of CO₂ in the mixture. If amount of CO₂ in the mixture goes beyond the 47.7%, the fuel will lose its ability to be ignited and thus there will be no flame in the combustor. In addition, knowing the maximum temperature of flame may help to analyze the combustion process and choose suitable material in manufacturing the micro combustor.

• Periodical: Applied Mechanics and Materials (Volume 388)
• Pages: 251-256
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.388.251
• Online since: August 2013
• Authors: Ghobad Bagheri, Ehsan Hamidi, Mazlan A. Wahid, Aminuddin Saat, Mohsin M. Sies
• Keywords: Carbon Dioxide, Flame Temperature, Methane, Microcombustor, Numerical Simulation

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