STUDY OF MODELLING SPRAY PENETRATION OF BIODISEL FUEL UNDER TRANSIENT ENGINE CONDITIONS

In this study, numerical investigations are conducted for biodiesel spray under transient engine conditions. The spray tip penetration of biodiesel has been studied in a comparison with diesel fuel in a diesel engine under transient engine conditions. The predicted results are compared with experimental data with a chosen case for highly ambient pressure. The study uses the Eulerian-Eulerian approach for the two phase ?ow simulation. In the validated computer programme both used liquid fuels are treated in terms of spray moments of drop size distribution. One parameter is selected for the analysis and to study the spray characteristics through the examination and tracking the behavior of the biodiesel. The obtained results for biodiesel fuel and diesel fuel of the spray tip penetration show a good agreement with the experimental results.