Mathematical-physical simulation and application of flow field of molten steel in six-strand tundish

The flow field of molten steel in the six-strand tundish has been researched by commercial software CFX and water simulation.The flow state of the original tundish and the improved one is analyzed and compared with each other.Results show that short circuit flow is found in the original tundish,the volume of dead zone is large and its maximum value reaches 68.89 %.Through building a V type slag dam and enlarging volume of the turbulence inhibitor,the dead volume fraction is largely reduced and ratio of the dead zone is controlled in 20 % and the minimum is only 8.98 %.Expansion of the piston zone is more beneficial to removal of inclusions.It's found through on-site experiment that the maximum temperature difference of the liquid steel between the exit of nozzle in the central area and that in the side area is reduced from original 8 ℃ to 3 ℃ and the total inclusions are reduced from 2.2 mg/kg before revamp to 1.3 mg/kg.