Physical and Mathematical Simulation on Flow Control Device in Tundish for Thin Slab Caster

摘要

The fluid flow in tundish has a great effect on the floatation of non-metallic inclusions. The model is built for simulating a thin slab continuous casting tundish. The effects of flow control device (FCD) with different size and installed position on fluid flow in a thin slab continuous casting tundish are investigated by physical and mathematical simulation. The results show that there is a short flow and a big dead zone volume without FCD. The average residence time is shorter and the dead zone volume is bigger when using the original FCD, thus the results is not perfect. Compared with the case without FCD, when using the optimized FCD, the onset response time of tracer is 2 times more, and the average residence time is increased from 264s to 301.4s; the dead zone volume fraction is decreased from 25.54% to 15.39%. The metallurgical capability of tundish is improved obviously.