ISSN Online: 2377-424X
International Heat Transfer Conference 12
Modeling the Evaporation of a Multicomponent Fuel
Abstrakt
A multicomponent fuel evaporation model for sprays has been formulated using the principles of the continuous
thermodynamics. Hence, each component in the multicomponent fuel mixture is not described by using discrete
relations for mass and energy conservation, but the fuel mixture properties and transport equations are discribed
with a distribution function. The model has been applied for diesel fuels and was implemented into the CFD
code KIVA-3V. The evaporation model was first applied in a single droplet single component numerical analysis
to clarify the characteristics compared to the standard KIVA evaporation model. Multicomponent single droplet
computations were made comparing the model to data in the literature and good agreement was observed. Finally a
numerical analysis of a diesel spray evaporation under engine like conditions in a constant volume bomb was made
and discussed with respect to the effects of multicomponent fuel on evaporation and ignition.