SIMULATION OF NON-NEWTONIAN EMULSION FLOWS IN MICROCHANNELS

Simulation of emulsion flows in differently shaped microchannels to reproduce the choking of such flows as a result of the effect of dynamic blocking has been made. A model of a highly concentrated emulsion as a structure of tightly packed deformed droplets surrounded by elastic shells is considered. The motion of liquid was determined by the method of the lattice Boltzmann equations together with the immersed boundary method. The infl uence of the nonNewtonian properties and of elastic turbulence of the indicated emulsion, as well as of the elasticity of the shells of its droplets and of the interaction of these shells on the emulsion motion in a microchannel, has been investigated. It is shown that the flow of this emulsion can be slowed down substantially only due to the mutual attraction of the shells of its droplets.
   
Author:  I. V. Malanichev and F. G. Akhmadiev
Keywords:  emulsion, effect of dynamic blocking, computational hydrodynamics, method of the lattice Boltzmann equations, method of immersed boundary
Page:  1483