Effects of a magnetic field on turbulent flow in the mold region of a steel caster

Ramnik Singh, Brian Thomas, Surya P. Vanka

Research output: Contribution to journalArticlepeer-review

Abstract

Electromagnetic braking (EMBr) greatly influences turbulent flow in the continuous casting mold and its transient stability, which affects level fluctuations and inclusion entrainment. Large eddy simulations are performed to investigate these transient flow phenomena using an accurate numerical scheme implemented on a graphics processing unit. The important effect of the current flow through the conducting solid steel shell on stabilizing the fluid flow pattern is investigated. The computational model is first validated with measurements made in a scaled physical model with a low melting point liquid metal and is then applied to a full-scale industrial caster. The overall flow field in the scale model was matched in the real caster by keeping only the Stuart number constant. The free surface-level behaviors can be matched by scaling the results using a similarity criterion based on the ratio of the Froude numbers. The transient behavior of the mold flow reveals the effects of EMBr on stability of the jet, top surface velocities, surface-level profiles, and surface-level fluctuations.

Original languageEnglish (US)
Pages (from-to)1201-1221
Number of pages21
JournalMetallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
Volume44
Issue number5
DOIs
StatePublished - Oct 1 2013

ASJC Scopus subject areas

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

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