Numerical simulation of an ethanol turbulent spray flame with RANS and diffusion combustion model

Fernando Luiz Sacomano Filho, Newton Kiyoshi Fukumasu, Guenther Carlos Krieger
2013 Journal of the Brazilian Society of Mechanical Sciences and Engineering  
A detailed numerical simulation of ethanol turbulent spray combustion was carried out on a rounded jet flame in a three-dimensional configuration. The focus was on the proposal of a robust mathematical model with relatively low complexity submodels that could well reproduce the main characteristics of the coupling between both phases, like the turbulence modulation, turbulent droplets dissipation and evaporative cooling effect. The results were analyzed and compared to experimental data
more » ... e in the literature. The simulations were carried out using the Eulerian Lagrangian procedure under a fully two-way coupling. To reproduce the effects of the evaporative cooling the combustion was modeled with a modified flamesheet model with a jointed mixture fraction-enthalpy β-PDF. Reasonable agreement between measured and computed mean profiles of temperature of the gas phase and droplet size distributions was achieved. Some deviations were observed in the mean velocity profiles comparisons between experimental data and simulations, which were assigned to the over predicted diffusion of the mean quantities transported by the gas phase.
doi:10.1007/s40430-013-0029-7 fatcat:44orkscavvg5ngeg5jl3dppuoa