Abstract: The current study focuses on the flow and temperature filed for a special-shaped tundish applied in a steelmaking plant.The tundish were investigated with the help of numerical modelling to improve the flow and temperature field in tundish which assembles a turbulence inhibitor and several dams.The research results showed that the flow field in the prototype tundish are not favorable for temperature homogenuous,resulting in a large temperature differences between outflows.With the optimization of tundish,the dead zone volume is reduced to 7.52 % from 22.05 %,which is the dead zone volume from the prototype,demonstrating a significant improvement on the flow field，as well as the temperature distribution.In addition,the uniformity of flows were evaluated by calculating the standard deviation.The optimized tundish showed that an appropriate combination of inhibitor and dams makes homogeneous flow and temperature field in the tundish.

Key words: special-shaped tundish, flow filed, temperature filed, dead zone volume, standard deviation