Abstract
This article presents a sharp-interface model for solving solid-liquid phase change of pure materials. An interface capturing method combining VOF and level set, VOSET, is employed to track the moving interface during phase change, and the level-set function generated in VOSET is used to consider the effect of the phase boundary when solving the fields of temperature and velocity. In order to deal with the interaction between the solid and liquid phases, an immersed boundary method (IBM) is incorporated into SIMPLER algorithm. The fundamental numerical approaches presented in this article were individually assessed by test problems, all showing good agreements with benchmark solutions. The established sharp-interface model was then applied in simulating melting and solidification without and with fluid flow, where competitive performance in accuracy was demonstrated by the numerical results.
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