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Application of a Unified Eulerian Model to Study the Inclusions Deposition at a Steel-Slag Interface in a Tundish
KTH, Skolan för industriell teknik och management (ITM), Materialvetenskap, Tillämpad processmetallurgi. State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing.ORCID-id: 0000-0001-7953-1127
KTH, Skolan för industriell teknik och management (ITM), Materialvetenskap, Tillämpad processmetallurgi.
KTH, Skolan för industriell teknik och management (ITM), Materialvetenskap, Tillämpad processmetallurgi. FOI, Swedish Defence Research Agency, Division of CBRN Defence and Security.
KTH, Skolan för industriell teknik och management (ITM), Materialvetenskap, Tillämpad processmetallurgi.ORCID-id: 0000-0003-1919-9964
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(engelsk)Manuskript (preprint) (Annet vitenskapelig)
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-168399OAI: oai:DiVA.org:kth-168399DiVA, id: diva2:816220
Merknad

QS 2015

Tilgjengelig fra: 2015-06-02 Laget: 2015-06-02 Sist oppdatert: 2015-06-15bibliografisk kontrollert
Inngår i avhandling
1. Some Aspects on Macroscopic Mixing in a Tundish
Åpne denne publikasjonen i ny fane eller vindu >>Some Aspects on Macroscopic Mixing in a Tundish
2015 (engelsk)Doktoravhandling, med artikler (Annet vitenskapelig)
Abstract [en]

Two aspects on macroscopic mixing in a continuous flow system – metallurgical tundish were studied. Specifically, 1) the first focus was on salt solution tracer mixing, which is important for tundish design from perspectives of tracer technology and Residence Time Distributions (RTD) as well as for the understanding of the macroscopic mixing in tundishes. The different amounts of salt solution tracer mixing in a tundish were studied by using both physical models and mathematical models. The disturbance of KCl salt tracer on the flow in the tundish with respect to different amounts is like the “butterfly effect”, i.e. only a slight increase of the amount of tracer, the flow field might be disturbed. This, in turn, will result in a shifted RTD curve. 2) The second focus was on Eulerian modeling of inclusions macroscopic transport and removal, which is important for tundish design from perspectives of inclusions removal and to provide information of macroscopic removal of inclusions. In the study, an approach that combined the meso-scale inclusions deposition at turbulent boundary layers of steel-slag interface and the macroscopic transport of inclusions in the tundish was used. The theoretical calculation results showed that the effect of the roughness on the deposition velocity of small inclusions (radius of 1 μm) were more pronounced than that for the big inclusions (up to the radius of 9 μm). The dynamic inclusions removal studies showed that the tundish with a weir and a dam exhibited a better performance with respect to the removal of bigger inclusions (radii of 5 μm, 7 μm and 9 μm) than that of the case without weirs and dams. However, the tundish without weirs and dams showed a higher removal ratio of smaller inclusions (radius of 1 μm).

sted, utgiver, år, opplag, sider
KTH Royal Institute of Technology, 2015. s. x, 24
Emneord
continuous reactor, tundish, tracer, macroscopic mixing, water model, CFD, turbulence models, inclusions removal, inclusions deposition, dynamic removal
HSV kategori
Forskningsprogram
Teknisk materialvetenskap
Identifikatorer
urn:nbn:se:kth:diva-168402 (URN)978-91-7595-632-9 (ISBN)
Disputas
2015-08-28, B2, Brinellvägen 23, KTH, Stockholm, 10:00 (engelsk)
Opponent
Veileder
Merknad

QC 20150615

Tilgjengelig fra: 2015-06-15 Laget: 2015-06-02 Sist oppdatert: 2015-06-15bibliografisk kontrollert

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Totalt: 245 treff
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