On Modelling Parasitic Solidification Due to Heat Loss at Submerged Entry Nozzle Region of Continuous Casting Mold

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dc.contributor.authorVakhrushev, Alexandercs
dc.contributor.authorKharicha, Abdellahcs
dc.contributor.authorWu, Menghuaics
dc.contributor.authorLudwig, Andreascs
dc.contributor.authorTang, Yongcs
dc.contributor.authorHackl, Gernotcs
dc.contributor.authorNitzl, Geraldcs
dc.contributor.authorWatzinger, Josefcs
dc.contributor.authorBoháček, Jancs
dc.coverage.issue9cs
dc.coverage.volume11cs
dc.date.issued2021-08-31cs
dc.description.abstractContinuous casting (CC) is one of the most important processes of steel production; it features a high production rate and close to the net shape. The quality improvement of final CC products is an important goal of scientific research. One of the defining issues of this goal is the stability of the casting process. The clogging of submerged entry nozzles (SENs) typically results in asymmetric mold flow, uneven solidification, meniscus fluctuations, and possible slag entrapment. Analyses of retained SENs have evidenced the solidification of entrapped melt inside clog material. The experimental study of these phenomena has significant difficulties that make numerical simulation a perfect investigation tool. In the present study, verified 2D simulations were performed with an advanced multi-material model based on a newly presented single mesh approach for the liquid and solid regions. Implemented as an in-house code using the OpenFOAM finite volume method libraries, it aggregated the liquid melt flow, solidification of the steel, and heat transfer through the refractory SENs, copper mold plates, and the slag layer, including its convection. The introduced novel technique dynamically couples the momentum at the steel/slag interface without complex multi-phase interface tracking. The following scenarios were studied: (i) SEN with proper fiber insulation, (ii) partial damage of SEN insulation, and (iii) complete damage of SEN insulation. A uniform 12 mm clog layer with 45% entrapped liquid steel was additionally considered. The simulations showed that parasitic solidification occurred inside an SEN bore with partially or completely absent insulation. SEN clogging was found to promote the solidification of the entrapped melt; without SEN insulation, it could overgrow the clogged region. The jet flow was shown to be accelerated due to the combined effect of the clogging and parasitic solidification; simultaneously, the superheat transport was impaired inside the mold cavity.en
dc.formattextcs
dc.format.extent1-20cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationMetals. 2021, vol. 11, issue 9, p. 1-20.en
dc.identifier.doi10.3390/met11091375cs
dc.identifier.issn2075-4701cs
dc.identifier.orcid0000-0003-3319-4254cs
dc.identifier.other172372cs
dc.identifier.researcheridC-2078-2018cs
dc.identifier.scopus55213548700cs
dc.identifier.urihttp://hdl.handle.net/11012/201646
dc.language.isoencs
dc.publisherMDPIcs
dc.relation.ispartofMetalscs
dc.relation.urihttps://www.mdpi.com/2075-4701/11/9/1375cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/2075-4701/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectheat and mass transferen
dc.subjectsolidificationen
dc.subjectcloggingen
dc.subjectsubmerged entry nozzleen
dc.subjectcontinuous castingen
dc.subjectOpenFOAM®en
dc.titleOn Modelling Parasitic Solidification Due to Heat Loss at Submerged Entry Nozzle Region of Continuous Casting Molden
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-172372en
sync.item.dbtypeVAVen
sync.item.insts2025.02.03 15:47:24en
sync.item.modts2025.01.17 15:34:55en
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. Laboratoř přenosu tepla a prouděnícs
thesis.grantorVysoké učení technické v Brně. . Montanuniversität Leobencs
thesis.grantorVysoké učení technické v Brně. . Primetals Technologies Austria GmbHcs
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