A physics-based model is developed to study the gravitational (convection), thermoelectric (Peltier, Seebeck, Joule, and Thomson) and magnetohydrodynamic (Lorentz force) effects on solidification phenomena. A scaling analysis is carried out to examine the importance and contributions of various governing parameters. Directional solidification with Peltier Interface Demarcation under varying gravitational conditions is simulated for the Bridgman–Stockbarger configuration. The predicted interface location and movement during current pulsing are studied and the microstructures corresponding to different current polarities are analyzed based on Jackson–Hunt theory.

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