Analysis of influence factors on ignition delay characteristic under O2/CO2 atmosphere
Detailed chemical kinetics method was used to study the ignition delay characteristics of three hydrocarbon fuels （n-pentane, n-hexane, n heptane） under high O2/CO2 concentration and air atmosphere. The influences of various parameters such as atmosphere, CO2 concentration, temperature, pressure, and equivalence ratio were also investigated in the temperature range of 1 000-1 350 K, in the pressure range of 1.6-4.0 MPa, and in the equivalence ratio range of 0.7-1.3. It can be concluded that at the same 02 initial concentration condition, the ignition delay time under high CO2 concentration atmosphere are markedly longer than that under ordinary air atmosphere. Increasing the initial CO2 concentration can further increase the ignition delay time, and the ignition delay phenomenon during O2/CO2 combustion not only relates to the CO2 ＇s physical thermal effect, but also relates to the chemical kinetic effect of high CO2 concentration atmosphere.
国家科技期刊平台
NSTL
万方数据
维普
