![]() The primary particle size was underpredicted by only about 30% compared with the measurements, without any model adjustments. Soot mass concentrations and size distributions for particles larger than 10 nm were well predicted with a surface reaction enhancement. It is also shown that the measured surface growth rate could be much higher than the value used in this study. It is shown that the adjusted-point fixed-sectional method can provide comparable accuracy to the moving-sectional model in a simulation of soot formation and growth. We have also simulated soot formation and growth in a jet-stirred/plug flow reactor (JSR/PFR) system for which soot size distribution measurements are available in the literature. The two models predicted significantly different soot precursor concentration and rates of aerosol processes, but substantially similar particle mass and number for the pyrolysis process. The average coagulation rate calculated by the sectional model was much higher than that by the method of moments model for a broad particle size distribution. Inclusion of the transition correction factor for the condensation coefficient led to the prediction of a smaller condensation rate compared with the method of moments model. Our model was compared with a previously published method of moments model for a simulation of the plasma pyrolysis of methane in a plug flow reactor. ![]() As nucleation and particle interactions with the surrounding gas as well as. Particle sizes (as well as total mass) is one outcome of recent studies that show the. ![]()
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