A global combustion model for simulation of n-heptane and iso-octane self ignition

作者：Voglsam S^*; Winter F

来源：Chemical Engineering Journal, 2012, 203: 357-369.

DOI：10.1016/j.cej.2012.06.086

• Global combustion model
• Gasoline
• Iso-octane
• n-Heptane
• Self ignition

For CFD-simulations, superposed with combustion phenomena, simplified reaction models are needed to reduce calculation times. In the present study, a global kinetic model for gasoline fuels was developed, whereby the focus was on the simulation of self ignition and estimation of main off-gas components (CO2, H2O, CO and H-2). The developed reaction system, consisting of 18 species (8 molecules. 10 species classes) and 19 mostly global reactions was validated for T = 600-1250 K and for p = 13-40 bars for equivalence ratios of Phi = 0.5 to Phi = 2 for combustion simulation of iso-octane, n-heptane and mixtures of both. Simulated ignition delay times were compared to shock-tube data and validated by a detailed combustion mechanism; these were then compared to approved reduced mechanisms. Species histories of different ideal reactor simulations were compared to literature data and detailed simulation results.

• 出版日期2012-9-1