Numerical Analysis on Influence of Cetane Index and Evaporation Characteristics of Multi-component Fuels using a Droplet Evaporation Model

Abstract

In this study, the authors have newly developed a droplet evaporation model for multi-component fuels, which uses the distillation curve, density and type of hydrocarbons as input data. The model is well validated against evaporation rates measured at various ambient temperatures and pressures. Distillation curve and density are known as variables for calculating cetane index. Using the proposed model, we investigated the effect of distillation curves and densities on evaporation characteristics. The results show that the evaporation rate coefficients and droplet life times of liquid fuels, which have a close correlation with the distillation curves, correlate poorly with the cetane indices.