Monodisperse droplet heating and evaporation: experimental study and modelling

摘要: Results of experimental studies and the modelling heating evaporation monodisperse ethanol acetone droplets in two regimes are presented. Firstly, pure a flow air prescribed temperature considered. Secondly , droplet flame produced by previously injected combusting studied. The phase Doppler anemometry technique is used for velocity size measurements. Two-colour laser induced fluorescence thermometry to estimate temperatures. experiments have been performed various distances between initial radii velocities. data compared with results modelling, based on given gas temperatures, measured coherent anti-stokes Raman spectroscopy, Nusselt Sherwood numbers calculated using values relative When estimating latter finite distance was taken into account. model assumption that spherically symmetrical, but takes account radial distribution inside droplets. It pointed out relatively small (initial about 65 lm) experimentally temperatures close predicted average while larger 120 at centre