Numerical Study of the Application for the Divergent Reverse TurboSwirl Nozzle in the Billet Continuous Casting Process
(English)Manuscript (preprint) (Other academic)
The swirling flow is demanded from the submerged entry nozzle (SEN) to the mold for the continuous casting process. A new design of the SEN is applied by using the reverse TurboSwirl. The TurboSwirl has been proved that it can provide a more stable flow pattern of the liquid steel in the mold. It also can supply a strong enough swirling flow compared to other swirling flow generation methods. Furthermore, a divergent nozzle is added to replace the bottom part of the straight SEN. This new divergent reverse TurboSwirl nozzle (DRTSN) could gain a more beneficial flow pattern in the mold compared to the straight nozzle. The numerical results reveals that a stronger swirling flow can be gained at the SEN outlet with a calmer flow field and active meniscus flow. It is also found that the swirl intensity in the SEN is independent of the casting speed. Lower casting speed is more desired due to a lower maximum wall shear stress. The DRTSN is connected to the tundish by an elbow and a horizontal runner. Longer horizontal runner can supply a more uniform velocity profile and symmetrical flow pattern in the mold.
swirling flow, TurboSwirl, divergent nozzle, SEN, billet continuous casting
Metallurgy and Metallic Materials
IdentifiersURN: urn:nbn:se:kth:diva-196833OAI: oai:DiVA.org:kth-196833DiVA: diva2:1049120
QC 201611232016-11-232016-11-232016-11-23Bibliographically approved