Abstract
A numerical simulation of turbulent spray combustion including soot and NO formation was carried out. The validity of the calculated results was demonstrated by comparing with experimental data. The effect of diameter and number of inlet nozzle on the combustion behavior was discussed. When inlet nozzle diameter decreases, the high temperature region shifts towards upstream because the increase in the inlet velocity causes the improvement of mixing of spray and air. As a result, the NO concentration in the exhaust gas decreases. The number of inlet nozzles has little influence on the temperature distribution. However, when the number of nozzle decreases, the NO concentration in the exhaust gas increases since the increase in the fluctuation of temperature results in the increase in the peak temperature.
