Abstract
ABSTRACT The Reynolds Averaged Navier-Stokes (RANS) simulation was employed to predict a turbulent flow of liquid-liquid two-phase system in standard stirred tank. The results calculated by the standard k-ε model and the Renormalization Group (RNG) k-ε model were compared to Particle Image Velocimetry (PIV) data from the literature. The constants of the transports equations were corrected, which could reflect the time-averaged strian rate of the main flow. Multi-dimensional investigation revealed the flaws of RNG k-ε model compared to standard k-ε model in predicting the liquid-liquid two-phase mixing process, which has great guidance for the selection of the turbulence models.
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