Mass Transfer from Ensembles of Newtonian Fluid Spheres at Moderate Reynolds and Peclet Numbers

摘要: Abstract In this work, the rate of mass transfer from an ensemble mono-size spherical Newtonian droplets (free surfactants) to a continuous phase has been numerically studied at moderate Reynolds and Peclet numbers. A simple cell model (so-called free surface model) used account for inter-drop hydrodynamic interactions. Extensive numerical results have obtained elucidate effects number (Reo), ratio internal external fluid viscosity (k), volume fraction dispersed (ɛ) Schmidt (Sc) on local average Sherwood (Sh) over ranges conditions: 1 ≤ Reo ≤ 200, 0.2 ≤ ɛ ≤ 0.6, 0.1 ≤ k≤ 50 1 ≤ Sc ≤ 10 000. It observed that is less significant small values (Pe) all concentration. As value increases, decreases droplet concentration number. Based present results, predictive correlation proposed which can be estimate inter-phase in liquid–liquid system new application. However, it also appropriate add here higher concentrations, spheres interact significantly, deform coalesce. All these are neglected study. Therefore, valid only dilute phase.