Multiphase CFD Simulation of gas-liquid flow in Dissolved Air Flotation

Eulerian-Eulerian multiphase CFD simulations were employed to examine the performance of a laboratory scale Dissolved Air Flotation (DAF) tank. Different multiphase turbulence models were tested in three dimensional simulations. The simulation results were assessed through comparisons of the predicted spatial distributions of water velocity. Two well known turbulence models, the standard k-ε and SST, were cross examined in two-phase simulations. Agreements of CFD simulation with results in literature are good.