Fluid field of molten steel in mould with 900 mm height for slab continuous casting has been simulated using k-e double equation model under numerical calculation conditions by a 3 dimensional mathematical software CFD to study effect of process parameters of mould on distribution turbulent kinetic energy at liquid level in mould and impact pressure at narrow side of mould. Results showed that for cross section 220 mm x 900 mm slab mould
the molten steel in mould had better flowage condition as immersion depth of nozzle was 180 mm with exit angle 15° and casting speed 1.6 ~ 1. 8 m/min.