Species, energy and momentum conservation equations are
solved in spherical symmetry and under ideal gas
approximation, to yield an analytical model capable to evaluate
the heat transfer and the evaporation rate from a drop under
quasi-steady conditions, accounting for the temperature
dependence of mixture density and diffusion coefficient. The
model is applied to predict the evaporation rate from water and
hydrocarbon droplets under pressure and temperature
conditions of interest for applicative fields, like fire control and
combustion. The results obtained by the proposed model are
compared with those from the most commonly used ones where
mass diffusion coefficient and gas density are kept constant to
an average value.
Papers presented to the 12th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Costa de Sol, Spain on 11-13 July 2016.