A Simulation of Soot Formation Using Particle Dynamics with One Dimensional Nucleation Mode

摘要

Two soot formation models using particle dynamics with one-dimensional nucleation mode directly coupled with gas phase chemistry are tested on three ethylene and three methane laminar premixed flames. These models demonstrate strength in the prediction of concentration profiles of major combustion products and critical intermediates, and the characteristics of soot particles. These models extend the practicability of simulation beyond the prediction of soot volume fraction and estimate the mean particle diameter quite well especially for methane flames. In particular, our second model expands the range of fuels that can be simulated, and also correctly predicts the effects of C/O ratio on the soot formation process. The strength and weakness of these models are investigated and new features are identified for the development of next generation of soot models.