TY - JOUR
AU - S.R. Rasulov,
AU - G.R. Mustafayeva,
PY - 2021/04/12
Y2 - 2024/06/20
TI - HYDRODYNAMIC FEATURES OF SUSPENSIONS AND EMULSIONS FLOWS
JF - Известия НАН РК. Серия химии и технологии
JA - SCT
VL -
IS - 2
SE - Статьи
DO -
UR - https://journals.nauka-nanrk.kz/chemistry-technology/article/view/218
SP - 99-104
AB - <p>This scientific article is devoted to the problems associated with the flow of suspensions and<br>emulsions and some simplifications of the real picture of the flow of a polydisperse medium are made. It is also<br>stipulated that differential equations characterizing the motion of suspensions and emulsions should take into account<br>the fundamental discontinuity of the medium and the physicochemical processes of heat and mass transfer occurring<br>in it. Taking into account all these factors, a general equation for multiphase systems is proposed with certain<br>simplifications that do not change.<br>The behavior of particles in two-phase systems, their concentration, collision and coagulation are considered. As<br>a result, it was concluded that there is a multifactorial interaction and mutual influence of both phases in a dispersed<br>flow. A differential equation of motion of a single i-th spherical particle in suspension was proposed, and an equation<br>describing the drag force of a solid spherical particles. Equations of conservation of mass and momentum are<br>presented for one-dimensional laminar motion of two incompressible phases in a gravity field with the same pressure<br>in the phases.<br>Having studied the parameters of the flow of fine particles in a turbulent gas flow, some assumptions were<br>made. It was found that the pulsating motion of particles, performed by them during one period of gas pulsations, can<br>be represented as a change in the pulsating gas velocity in time. The parameter of entrainment of particles by a<br>pulsating medium is an important characteristic in determining the transport coefficients in a turbulent flow.<br>It is concluded that the presence of various kinds of particles in the liquid complicates the problem of solving<br>hydromechanical problems in turbulent and laminar flow, and the assumptions given in the work facilitate the study<br>of this problem</p>
ER -