Impact of heptadecance and octadecane on physical properties and SMD of kerosene

The impact of n-alkanes (C₁₇~C₁₈) on the physical properties of kerosene, including kinematic viscosity, density and surface tension was dicussed, and the effects of n-alkanes (C₁₇~C₁₈) on SMD (Sauter mean diameter) were investigated. The density fitting equation used Key's blending law, Tat blending law and polynomial fitting. The viscosity fitting equation used Key's blending law and logarithmic fitting. This fitting equation in this investigation have optimal accuracy. The atomization experiment shows that the SMD of blending fuels increases with the mass percentage of n-alkanes, which means that the added n-alkanes have negative effect to the atomization performance. The SMD of C₁₈ blending fuels is larger than C₁₇ blending fuels'. The fitting equation of physical properties are used to predict SMD of the blending fuels, and its error is less than 0.3%.