To study removal of nonmetallic inclusion in continuous casting mold, both flow visualized experiments and computer simulations were carried out using a 1/2 scale water model of the mold. The effect of port angle of submerged nozzle on the floatability of nonmetallic inclusion was also examined. The velocity fields predicted by solving the turbulent Navier-Stokes equations using the K-ε model for turbulent viscosity were found to be in good qualitative agreement with the results of water model experiments. The result of the present work could be used to predict the characteristics of fluid flow in a continuous casting mold.