Metallurgical and Materials Transactions B

, Volume 39, Issue 6, pp 870–884 | Cite as

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
Article

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.

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Copyright information

© THE MINERALS, METALS & MATERIALS SOCIETY and ASM INTERNATIONAL 2008

Authors and Affiliations

  • R. Chaudhary
    • 1
  • Go-Gi Lee
    • 2
  • B.G. Thomas
    • 1
  • Seon-Hyo Kim
    • 2
  1. 1.Department of Mechanical Science and EngineeringUniversity of Illinois at Urbana–ChampaignUrbanaUSA
  2. 2.Department of Materials Science and EngineeringPohang University of Science and TechnologyPohangSouth Korea

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