Computational fluid dynamic analyses for industrial purposes often rely on Reynolds averaged models for resolving turbulent flows. These models were developed primarily for single phase fluids and their extension to multiphase flows requires additional modifications and careful considerations. Modelling the effect of gas-liquid interface on turbulence in adjacent fluids has been a subject of many investigations but the results of these studies have not yet made its way into RANS models. This paper presents a model that incorporates recent DNS studies as well as some analytical considerations. Although an improvement in the flow rate prediction was obtained the improvement was sensitive to mesh refinement. Possibilities of further research is outlined.

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