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Numerical study of an application of a divergent reverse TurboSwirl nozzle in the billet continuous casting process
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Applied Process Metallurgy.ORCID iD: 0000-0002-4081-7766
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Materials Processing.ORCID iD: 0000-0003-4384-7984
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Materials Processing.ORCID iD: 0000-0001-9775-0382
2019 (English)In: Ironmaking & steelmaking, ISSN 0301-9233, E-ISSN 1743-2812, Vol. 46, no 2, p. 148-158Article in journal (Refereed) Published
Abstract [en]

The swirling flow has widely been investigated for liquid steel flowing in the continuous casting process. In this paper, a new design of the submerged entry nozzle (SEN) is applied by using a reverse TurboSwirl device with a divergent nozzle. This divergent reverse TurboSwirl nozzle (DRTSN) is shown to gain a more beneficial flow pattern compared to the straight nozzle. A stronger swirling flow can be obtained at the SEN outlet, which leads to a calmer flow field and an appropriately active meniscus flow that could improve the heat and mass transfer near the meniscus. The swirl number in the SEN is independent of the casting speed, while a lower casting speed yields a lower maximum wall shear stress. The DRTSN is connected to the tundish by an elbow and a horizontal runner. A longer horizontal runner supplies a more uniform velocity profile and a more symmetrical flow pattern.

Place, publisher, year, edition, pages
TAYLOR & FRANCIS LTD , 2019. Vol. 46, no 2, p. 148-158
Keywords [en]
Swirling flow, TurboSwirl, divergent nozzle, SEN, billet continuous casting
National Category
Fluid Mechanics and Acoustics
Identifiers
URN: urn:nbn:se:kth:diva-244514DOI: 10.1080/03019233.2017.1360433ISI: 000458159900006Scopus ID: 2-s2.0-85027106950OAI: oai:DiVA.org:kth-244514DiVA, id: diva2:1301721
Note

QC 20190402

Available from: 2019-04-02 Created: 2019-04-02 Last updated: 2019-04-02Bibliographically approved

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Bai, HaitongErsson, MikaelJönsson, Pär

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