Design optimization of a single-strand continuous caster tundish using residence time distribution data

This paper contains the results of a design optimization study performed on the steady-casting operation of the Columbus Stainless single-strand stain less steel caster tundish, Residence Time Distribution (RTD) data such as m inimum residence time (or plug flow volume fraction) and dead volume are us ed as objective functions in the mathematical optimization process. Water i s used in the first two case studies as modeling fluid to allow for compari son with water model results. Liquid steel is used in the last case study t o investigate the effect of temperature and buoyancy on the resulting flow patterns and the optimum design. Two separate tundish configurations are co nsidered. The first has one dam and one weir, while the second comprises a baffle with angled holes and an impact pad. Significant improvements of up to 34 % in minimum residence time are obtained for the second configuration .