Lattice Boltzmann Method based multiscale modeling of two-phase flows through microarchitectures with microfeatures

摘要

Segmented two-phase flows in microscale-based structures display attractive characteristics such as enhanced mixing and intensification of mass and heat transfer, reduced Taylor dispersion, and opportunity to control and manipulate dispersed phase; bubbles or droplets. Two-phase flow in microscale-based structures is commonly used in emulsification and encapsulation operations, microreactors, material synthesis, bioassays and many other applications ([1],[2]). Apart for its purposeful presence, dispersed phase could occur in microarchitectures as a side effect emerging from phase transition, inadvertent inflow with process feed, or through equipment gaps ([3],[4]). Whether part of an intended operation or unwanted operating byproduct, second/discrete phase has to be properly controlled to achieve desired system performance.