2001 年 41 巻 10 号 p. 1208-1214
Swirling flow effectiveness on controlling the bulk mold flow has been acknowledged recently, concerning the productivity of continuous casting process and its quality. From the practical viewpoint, relationship between the throughput and bulk mold flow is investigated. Following results are obtained:
1) Numerical analysis fairly coincide with the experimental results for the cases: nozzle outlet, surface flow and velocity distributions along the narrow face.
2) Surface velocity decreases with increasing the axial length of the nozzle outlet, particularly in length from 20 to 60 mm.
3) For the high throughput case, considerable stable bulk mold flow can be obtained.
4) Bulk mold flows under different throughputs are similar with each other if (tangential velocity W innozzle/axial velocity Vzin nozzle) of those have same magnitude with each other.
