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NUMERICAL SOLUTION OF PLANE-FRONT SOLIDIFICATION WITH KINETIC UNDERCOOLING

机译:动力欠冷却平面前凝固的数值解

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The numeric solution of a modified Stefan problem in the presence of a generalized kinetic undercooling term is investigated. Two fixed-grid methods and a deforming-grid scheme are described The Fixed-grid phase-field method is extended to encompass a generalized dependence of the melting temperature on the front velocity. Two liquid fraction-based methods are also provided, which are discretized over a deforming grid and a Fixed grid, respectively. Results show that, whereas the deforming grid scheme is the most efficient for one-dimensional problems, the phase-field method is a competitive choice among fixed-grid schemes. [References: 29]
机译:研究了在存在广义动力学过冷项的情况下改进的Stefan问题的数值解。描述了两种固定网格方法和变形网格方案。扩展了固定网格相场方法,以涵盖熔化温度对前沿速度的一般依赖性。还提供了两种基于液体馏分的方法,分别在变形网格和固定网格上离散化。结果表明,虽然变形网格方案对于一维问题最有效,但相场方法是固定网格方案中的一种竞争选择。 [参考:29]

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