COMPLICATED MASS AND HEAT-TRANSFER BETWEEN PARTICLES, DROPS, AND BUBBLES AND A FLOW

A brief review and several new approximate analytical solutions to ins ide and outside problems for complicated mass and heat transfer betwee n particles, drops, and bubbles and a laminar flow at different values of Peclet and Reynolds numbers are given. The complicating factors un der consideration are the concentration dependence of diffusivity, the presence of homogeneous and heterogeneous chemical reactions, and the hindered flow around the particles. The accuracy of some of the appro ximate solutions relative to the available exact solutions is estimate d.