2001 年 41 巻 10 号 p. 1215-1220
It often occurs that setting up an immersion nozzle on the mold, nozzle axis does not coincide with the mold-axis. In this study, under the off-center nozzle with the mold-axis, bulk mold flow was investigated, and following issues were obtained:
1) For the case without swirl, the peak of the flow moves near the mold-wall with flowing down from the outlet of the nozzle due to the Coanda effect (shown in Appendix).1) On the other hand, peak of the flow moves near the mold-axis with flowing down from the nozzle-outlet within considerable short distance, namely axisymmetric velocity distribution can be obtained within very short distance from the nozzle-outlet.
2) The surface flow patterns between coaxial and off-center nozzles are quite different. The flow pattern with coaxial nozzle is axisymmetric and simple, while the flow from one side to other side can be observed, with off-center nozzle.
