MULTICOMPONENT DROPLET EVAPORATION AT INTERMEDIATE REYNOLDS-NUMBERS

The convective evaporation of a binary hydrocarbon droplet (decane-hex adecane) in air at 1000 K and at a pressure of 10 atmospheres has been studied using numerical methods. All transient effects including drop let size and velocity variations, heat and mass transfer within the li quid phase, and thermophysical property variations with temperature an d concentration in both phases are included in the analysis. As the ra te controlling process, liquid phase mass transfer is examined in deta il. It is demonstrated that the existing drag coefficient, Sherwood nu mber, and Nusselt number correlations originally developed for single- component droplets can be used for multicomponent droplets as well.