Paper presented at the 6th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, South Africa, 30 June - 2 July, 2008.
A numerical investigation of the turbulent, multi-component
and reactive flow-field that develops in a Stabilized Cool Flame
Diesel fuel spray evaporation system, using a Computational
Fluid Dynamics (CFD) code is presented. The physical and
chemical phenomena are described by solving the respective
mass, momentum, species, thermal and turbulent energy
conservation equations. A dedicated numerical model is
developed, based on the fitting parameter concept, in order to
describe in sufficient detail the thermo-chemical effects of cool
flame reactions. The model is based on physico-chemical
reasoning coupled with information from available
experimental data and chemical kinetics simulations. The
developed model is validated and evaluated by comparing CFD
predictions to experimental data from an atmospheric pressure,
evaporating Diesel spray, Stabilized Cool Flame reactor.
Temperature predictions are compared to measurements with
satisfactory agreement. Computational results are used to
obtain in-depth information about the complex flow-field
developing in such innovative devices.
