Metallurgical and Materials Transactions B

, Volume 31, Issue 1, pp 179–189 | Cite as

Modeling the dynamics of magnetic semilevitation melting

  • V. Bojarevics
  • K. Pericleous
  • M. Cross
Article

Abstract

In semilevitation melting, a cylindrical metal ingot is melted by a coaxial a.c. induction coil. A watercooled solid base supports the ingot, while the top and side free surface is confined by the magnetic forces as the melting front progresses. The dynamic interplay between gravity, hydrodynamic stress, and the Lorentz force in the fluid determines the instantaneous free surface shape. The coupled nonstationary equations for turbulent flow, heat with phase change, and high-frequency electromagnetic field are solved numerically for the axisymmetric time-dependent domain by a continuous mesh transformation, using a pseudospectral method. Results are obtained for the two actually existing coil configurations and several validation cases.

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Copyright information

© ASM International & TMS-The Minerals, Metals and Materials Society 2000

Authors and Affiliations

  • V. Bojarevics
    • 1
  • K. Pericleous
    • 1
  • M. Cross
    • 1
  1. 1.the School of MathematicsUniversity of GreenwichLondonUnited Kingdom

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