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Effect of immersion depth of a swirling flow tundish SEN on multiphase flow and heat transfer in Mold
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.
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2018 (English)In: Metals, ISSN 2075-4701, Vol. 8, no 11, article id 910Article in journal (Refereed) Published
Abstract [en]

The effect of the immersion depth of a new swirling flow tundish SEN (Submerged Entry Nozzle) on the multiphase flow and heat transfer in a mold was studied using numerical simulation. The RSM (Reynolds Stress Model) and the VOF (Volume of Fluid) model were used to solve the steel and slag flow phenomena. The results show that the SEN immersion depth can significantly influence the steel flow near the meniscus. Specifically, an increase of the SEN immersion depth decreases the interfacial velocity, and this reduces the risk for the slag entrainment. The calculated Weber Number decreases from 0.8 to 0.2 when the SEN immersion depth increases from 15 cm to 25 cm. With a large SEN immersion depth, the steel flow velocity near the solidification front, which is below the mold level of SEN outlet, was increased. The temperature distribution has a similar distribution characteristic for different SEN immersion depths. The high temperature region is located near the solidification front. Temperature near the meniscus was slightly decreased when the SEN immersion depth was increased, due to an increased steel moving distance from the SEN outlet to the meniscus.

Place, publisher, year, edition, pages
MDPI AG , 2018. Vol. 8, no 11, article id 910
Keywords [en]
Continuous casting mold, Heat transfer, Multiphase flow, SEN immersion depth, Swirling flow tundish
National Category
Metallurgy and Metallic Materials
Identifiers
URN: urn:nbn:se:kth:diva-247071DOI: 10.3390/met8110910ISI: 000451735100049Scopus ID: 2-s2.0-85056317151OAI: oai:DiVA.org:kth-247071DiVA, id: diva2:1329980
Note

QC 20190625

Available from: 2019-06-25 Created: 2019-06-25 Last updated: 2019-10-28Bibliographically approved

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Ersson, MikaelJonsson, Lage Tord IngemarJönsson, Pär

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