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MAGNETIC FIELD SUPPRESSION OF MELT FLOW IN CRYSTAL GROWTH

Brian H. Dennis
Department of Mechanical and Aerospace Engineering, UTA Box 19018, The University of Texas at Arlington, Arlington, Texas 76019, USA

George S. Dulikravich
Department of Mechanical and Materials Engineering, MAIDROC Laboratory Florida International University, 10555 West Flagler St., EC 3462, Miami, Florida 33174, USA

要約

The p-version least-squares finite element method was used for prediction of solidification from a melt under the influence of an externally applied magnetic field. The computational results indicate significantly different flow-field patterns and thermal fields in the melt and the accrued solid in the cases of full gravity, reduced gravity, and an applied uniform magnetic field. This clearly suggests the possibility of optimizing magnetic field distribution and crucible shapes for controlling the melt recirculation.

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