Reduced Mechanism for Combustion of Hydrogen and Methane with Nitrogen Chemistry

Abstract

A reduced chemical kinetic reaction mechanism that could be used in computational fluid dynamics (CFD) software wasdeveloped to describe the formation of nitrogen oxides and their subsequent destruction in hydrogen and/or hydrocarbonflames with or without seeding of nitrogen compounds. The research work presented here will describe the numericalwork done with the application "CHEMKIN" in order to verify the quality of the reduced mechanism. The mechanismwas validated through comparisons between computational data from a variety of different sources. In addition, numerical experiments were carried out to examine features of methane combustion in which the detailed mechanisms canbe used to compare their response. The proposed reduced mechanism provides reasonable agreement with the studieddetailed mechanisms, mainly in the species produced from the hydrocarbon oxidation process. Regarding the producednitrogen species, the proposed reduced mechanism showed the same tendencies as the detailed mechanisms, but there isa need for a better agreement regarding the quantities.