A Reduced Reaction Mechanism of Polycyclic Aromatic Hydrocarbon Formation in Diesel Partially Premixed Combustion

摘要

AbstractThe present study reported an updated reduced chemical kinetic model for PAHs formation in the nheptane combustion. The detailed reaction mechanism (including 101 species and 544 reactions) of the ethane combustion in modeling polycyclic aromatic hydrocarbon (PAHs) formation is reduced by adopting net reaction rate analysis and sensitivity analysis, and a reduced mechanism (including 52 species and 83 reactions) is developed. The formation of PAHs in the ethane premixed combustion is simulated using this reduced mechanism. The computational results for the species mole fractions distributions of the main reactants and main products using this reduced mechanism agree with experimental data. Furthermore, incorporating the reaction mechanism of n-heptane destruction and oxidation (including 27 species and 36 reactions) into this reduced mechanism, a reduced mechanism of PAHs formation in n-heptane flame (including 62 species and 119 reactions) is developed. The formation of PAHs in n-heptane partiall...