Transient mold fluid flow with well- and mountain-bottom nozzles in continuous casting of steel

R. Chaudhary, Go Gi Lee, B. G. Thomas, Seon Hyo Kim

Research output: Contribution to journalArticle

Abstract

Nozzle shape plays a key role in determining the flow pattern in the mold of the continuous- casting process under both steady-state and transient conditions. This work applies computational models and experiments with a one-third scale water model to characterize flow in the nozzle and mold to evaluate well-bottom and mountain-bottom nozzle performance. Velocities predicted with the three-dimensional k-ε turbulence model agree with both particle- image velocimetry and impeller measurements in the water model. The steady-state jet velocity and angle leaving the ports is similar for the two nozzle-bottom designs. However, the results show that nozzles with a mountain-shaped bottom are more susceptible to problems from asymmetric flow, low-frequency surface-flow variations, and excessive surface velocities. The same benefits of the well-bottom nozzle are predicted for flow in the steel caster.

Original languageEnglish (US)
Pages (from-to)870-884
Number of pages15
JournalMetallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
Volume39
Issue number6
DOIs
StatePublished - Dec 1 2008

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry

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