Two-level simulation of internal two-phase flows

Two-level approach to the simulation of internal two-phase flows is proposed. Models of lower level correspond to the processes passing near the individual particles or droplets and models of upper level correspond to the processes passing in the whole computational domain. Combined solution of lower and upper level problems makes it possible to avoid introduction of different empirical corrections taking into account distinction of particle shape from spherical, presence of recirculation region and weak beyond particles, relative motion of particle and fluid and some other effects. Investigation of hydrodynamics processes at unstable free motion of nonspherical particle in the not uniform flow on the base of developed tools of numerical simulation.