Effect of Uniform and Non-Uniform Increasing Casting Flow Rate on Dispersion and Outflow Percentage of Tracers in Four Strand Tundishes under Strand Blockage Conditions

The flow field, tracer dispersion and uniformity of strands in two designs four-strand tun-dishes under normal conditions single-strand blockage are studied by numerical simulation. casting speed (flow rate) increasing uniformly or non-uniformly to improve the strand condition. cases evaluated a novel outflow percentage analysis method. results show that field tundish does not change significantly when is blocked rate increased. After one strand, consistency each u-shaped weir better than double-weir tundish. With uniform rate, response time decreases increases. However, improved slightly but decreased For tundish, located part factor 1.5 other 1.25, best. non-uniform strands. increased 1.375 1.2 1.4 optimized cases.