A WIDE-RANGE MODELING STUDY OF N-HEPTANE OXIDATION

This paper presents a semi-detailed kinetic scheme for n-heptane oxida tion. Both the low and high temperature primary mechanisms are conveni ently reduced to a lumped kinetic model involving only a limited numbe r of intermediate steps. This primary reaction scheme, similar to the Shell model, is flexible enough to predict accurately the intermediate components, the heat release and also ignition delay times. General c riteria for the reduction of intermediate species allows efficient cou pling of the scheme with a detailed kinetic model of C-1-C-4 oxidation . Several comparisons with experimental data, obtained under very diff erent operating conditions, from pure pyrolysis to fuel-lean condition s, including shock tube, flow and jet stirred reactors support the app licability of this kinetic model of n-heptane oxidation over a wide ra nge of pressures, both in the low and high temperature regions.