The effects of Thermoelectric Magnetohydrodynamics in directional solidification under a transverse magnetic field

B. Cai, Peter D Lee, K. Pericleous

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    Abstract

    The mechanism of macrosegregation and modification to dendrite size and spacing from a transverse magnetic field has been modelled through direct numerical simulation. The primary driver for this mechanism was identified as a strong Lorentz force formed in the interdendritic region, which leads to a large scale flow circulation. The microstructure evolution is modified by convective transport of solute and the predicted morphological features compare favourably to experimental data in the literature. The numerical results also give an insight into the magnitude of flow velocities within the interdendritic region.

    Original languageEnglish
    Pages (from-to)270-274
    Number of pages5
    JournalJournal of Crystal Growth
    Volume457
    Early online date7 Jul 2016
    DOIs
    Publication statusPublished - 1 Jan 2017

    Keywords

    • A. Thermoelectric currents
    • A1. Crystal structure
    • A1. Directional solidification
    • A1. Magnetic fields
    • A1. Mass transfer

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