The present paper describes a numerical investigation of two phase flows in ladle systems with either central bottom injection (nitrogen-Wood's metal) or top lance injection (air-water). An Eulerian two phase model is used. The interface momentum exchange includes effects of drag, lift and turbulent dispersion forces. The influence of the dispersed phase turbulence on flow characteristics is addressed. Predictions are compared in detail with experimental data for the mean axial and radial liquid velocities and the bubble rising velocity at various heights. Results show that the numerical model can reasonably predict flows agitated by gas injection. However, a relatively large difference between predictions and measurements is observed in the gas-liquid plume. It is found that the effect of gas phase turbulence is negligible for air-water system, while some effect of gas phase turbulence on the molten metal system is observed at a large average bubble diameter.
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