MAIK “Nauka

The mass transfer problem in liquid flows through channels and hollows of various shapes is encountered in many processes of the chemical and food industries where multiphase liquids move. In the food industry, these processes are exemplified by milk skimming in cream separators, milk refinement from the finest solid particles in refiners, separation of livestock blood obtained during slaughter into erythrocytes and plasma in separators, and blending of food (milk, ground meat, soft cheeses, and the like) with various additives that consist of the finest solid or liquid particles. In the chemical industry, examples are flows of dissolved macromolecules, wood pulps (in paper manufacturing), latex particles suspended in emulsion dyes, reinforcing particles in polymer melts, and the like. Here, we consider the mass-transfer problem as applied to the dispersion, in a given volume, of some portion of a liquid medium (hereafter, a liquid) that contains a weight or volume concentration