Numerical Modeling of Soot Emissions in n-Heptane Spray Using Multistep Soot Model with Detailed PAH Chemistry

Introduction The present day oil crisis and need for more fuel economy has driven the demand for diesel powered automobiles. Diesel soot is one of the primary emissions of diesel combustion and accurate modeling of soot formation is a challenging area for combustion researchers. The soot formation in diesel engine combustion has been previously modeled using a twostep phenomenological model which includes the inception of soot from a precursor species and oxidation of soot [1]. More complex soot models have been developed in the recent past [2],[4],&[7]. The multi-step soot model has gained interest due to its ability to predict the soot much more accurately in EGR systems [7].