Combustion and soot modelling of a turbulent kerosene/air diffusion flame.

摘要

The conventional approach to modelling soot nucleation is via acetylene. However, with fuels that contain aromatics, phenyl radicals play an important role as intermediates in high temperature reactions leading to formation of soot. The current work is to develop a soot model that accounts for inception, coagulation, surface growth, and oxidation of soot in a turbulent kerosene/air diffusion flame. An advanced combustion model, in which the detailed chemical reaction mechanism is coupled to the complex turbulent flame field using laminar flamelet concept, is developed to simulate the non-premixed turbulent reacting flow. A thermal diffusion radiation model is used to model the radiation effect from soot to the reacting flow. The experimental measurement in literature is used to validate the developed soot model and the comparison shows that the simulation and the measurement are in good agreement.