Multi-component droplet evaporation model.

摘要

The objective of this study is to develop a computationally effective model that can predict heat and mass transfer inside of a multi-component fuel droplet. The theoretical background of an existing model is briefly reviewed, followed by the new concept for the multi-component fuel droplet evaporation model developed in this study.;The new approach accounts for finite thermal conductivity, finite mass diffusivity and turbulence effects within the atomizing liquid spray for multi-component fuel droplet evaporation. The model includes non-ideal gas and liquid behavior, azeotropic behavior of ethanol-gasoline fuel blend, and variable thermo-transport properties including their dependence on temperature.;Three different fuel surrogates at different surrounding gas pressure and temperature were modeled. The first two fuels are composed of binary components, and finally ethanol-gasoline blended fuel with eight components was studied.