Computational investigation of turbulent round jet in a significant co-flow

In the present paper, turbulent round jet in a significant co-flowing ambient has numerically been studied using two widely used turbulence models, namely, the standard k-Ε model and Reynolds-stress transport (RST) model. The performance of the two models has been analyzed by means of a detailed comparison between the predictions and the experimental observations reported in the literature. The comparisons show that the mean flow quantities predicted by both models agree well with the experimental observations. However, some deviations are observed in the predicted turbulent quantities such as Reynolds shear stress and turbulence intensities. The deviation between the predictions by the RST model and experimental data is large compared to that by the k-Ε model. Thus it can be concluded that overall the standard k-e model is superior to RST model for this flow configuration.