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A NEMD approach to the melt-front evolution under gravity.

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This study demonstrates Non-Equilibrium Molecular Dynamics (NEMD) can model melt front evolution under gravity and thermal gradients. Molecular simulations offer a promising approach for studying these complex non-equilibrium phenomena.

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Area of Science:

  • Physics
  • Materials Science
  • Computational Science

Background:

  • Modeling melt front evolution under gravity and thermal gradients is complex.
  • Current computational continuum thermomechanics methods lack predictive power.

Purpose of the Study:

  • To investigate the applicability of Non-Equilibrium Molecular Dynamics (NEMD) for modeling melt front evolution.
  • To overcome challenges in boundary conditions and surface effects for bulk behavior analysis.

Main Methods:

  • Utilized Non-Equilibrium Molecular Dynamics (NEMD) simulations.
  • Applied suitable boundary conditions and minimized surface effects.
  • Employed time averaging to capture macroscopic bulk behavior.

Main Results:

  • Successfully modeled melt front evolution using NEMD.
  • Addressed challenges in simulating non-equilibrium conditions.
  • Used an amplified gravity value to enhance signal-to-noise ratio, noting phenomenon stability.

Conclusions:

  • Molecular simulations, specifically NEMD, are viable tools for studying non-equilibrium phenomena like melt front evolution.
  • Further research is required to achieve quantitative predictive capabilities in these simulations.