Thermodynamical Allen-Cahn Equation with High-Order Polynomial Free Energy

초록

The Allen-Cahn equation was originally introduced to model of antiphase domain coarsening in a binary mixture in materials science. It is applied to various scientific fields including data classification, volume reconstruction, image segmentation, multiphase flow, and biological transport networks, and dendritic crystal growth. To describe more natural and complex dynamics, we consider the thermodynamical conductivity into the Allen-Cahn equation. The conductivities are chosen based on the Fick's law, Werede's law, and Chapman's law. Moreover, a high order potential function is considered to investigate the effect of order of potential function's order. Some properties of the governing equation are analyzed based on the modified Ginzburg-Landau energy. To numerically solve the proposed governing equation, we construct a numerical scheme based on the linear stabilized splitting scheme. Since the linear stabilized splitting scheme treats the nonlinear term explicitly and the linear term as implicitly, it is an efficient, unconditionally energy-stable, and property-preserving scheme. We numerically analyze and simulate some properties of the proposed numerical scheme in one-, two-, and three-dimensional spaces.

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