  This work assesses Lagrangian droplet evaporation models frequently used in
spray combustion simulations, with the purpose of identifying the influence of
modeling decisions on the single droplet behavior. Besides more simplistic
models, the evaluated strategies include a simple method to incorporate Stefan
flow effects in the heat transfer (Bird's correction), a method to consider the
interaction of Stefan flow with the heat and mass transfer films
(Abramzon-Sirignano model), and a method to incorporate non-equilibrium
thermodynamics (Langmuir-Knudsen model). The importance of each phenomena is
quantified analytically and numerically under various conditions. Evaporation
models ignoring Stefan flow are found to be invalid under the studied
conditions. The Langmuir-Knudsen model is also deemed inadequate for high
temperature evaporation, while Bird's correction and the Abramzon-Sirignano
model are identified as the most relevant for numerical studies of spray
combustion systems. Latter is the most elaborate model studied here, as it
considers Reynolds number effects beyond the empirical correlation of Ranz and
Marshall derived for low-transfer rates. Thus, the Abramzon-Sirignano model is
identified as the state of the art alternative in the scope of this study.
