The effect of different operation parameters on the molten steel flow in the mould in No.2 Steelmaking Plant, WISCO has been studied via the three-dimensional flow field software developed by the authors. The results show that the more deeper the nozzle immersion depth is, the less the molten steel velocity at the interface, the weaker the oscillation near the interface and the more difficult the occurrence of the slag entrapment become.Compared with the round entry nozzle, the rectangular entry nozzle can ...