A numerical study has been carried out on a confined jet with a cylindrical ring, which was installed coaxially to the jet nozzle, by employing four turbulence models: the Reynolds stress model (R.S.M.), the algebraic stress model (A.S.M.), the standard k-ε model and its variant which accounts for the effects of streamline curvature on turbulence. All the turbulence models examined in this paper give reasonable results of mean flow field, although the R.S.M. is superior to the other models in the prediction of the wall static pressure and the A.S.M. in the mean velocity profiles of this flow. On the other hand, turbulence measurements are needed in the recirculating region, since there are some differences in the computed results among the turbulence models.