Abstract
A complete two-phase turbulent flow structure should include the mean and fluctuating quantities of the flow properties for both the carrier and dispersed phases. It was shown diat the stochastic approach, which is recently in common use of the simulation of two-phase turbulent flow, did not yield correct probability density function of the dispersed-phase velocity. The information of turbulent kinetic energy of the dispersed phase is then suggested to be necessary to describe adequately a twophase turbulent flow structure. The values of turbulent kinetic energy of the dispersed phase can be determined with the Lagrangian equation of turbulent kinetic energy of the dispersed phase. It is shown that the deterministic approach in association with the Lagrangian equation of turbulent kinetic energy of the dispersed phase yields more realistic probability density function of the dispersed phase than the stochastic approach.
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