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Mathematical modelling of fluid flow and heat transfer in steel ladles
Luleå tekniska universitet.
1999 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

In this thesis work, three mathematical models, each of which is suitable for simulating a particular process in the operation of steel ladles, have been developed. Firstly, by using a finite-difference mathematical method (FDM), a one-dimensional numerical model for calculating heat transfer through ladle wall, bottom and top slag layer was established. This FDM model was used to provide transient and structure dependent heat loss fluxes for further modelling of fluid flow and heat transfer in steel ladles. Then, with a computational fluid dynamics (CFD) mathematical approach, a two-dimensional CFD model for simulating fluid flow and heat transfer in steel ladles during the holding period before teeming was developed. With this model the natural convection and thermal stratification phenomena occurring in steel ladles were investigated. Further, the two-dimensional CFD model was finally extended into a three-dimensional CFD model to include simulations on the fluid flow and heat transfer in steel ladles with drainage during teeming, so that the interaction between natural convection and drainage flow was examined. By using this three-dimensional CFD model, it is possible to predict the steel stream temperature during teeming which is important for further prediction and control of steel temperature in tundishes during continuous casting.

Place, publisher, year, edition, pages
Luleå: Luleå tekniska universitet, 1999.
Series
Licentiate thesis / Luleå University of Technology, ISSN 1402-1757 ; 1999:57
National Category
Metallurgy and Metallic Materials
Research subject
Process Metallurgy
Identifiers
URN: urn:nbn:se:ltu:diva-26668Local ID: f6c51880-d7eb-11db-a1bf-000ea68e967bOAI: oai:DiVA.org:ltu-26668DiVA: diva2:999837
Note

Godkänd; 1999; 20070321 (ysko)

Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2016-10-20Bibliographically approved

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Citation style
  • apa
  • ieee
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Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
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  • Other locale
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Output format
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