Phase-field model with a reduced interface diffuseness
Phase-field model with a reduced interface diffuseness
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DOI：
10.1016/j.jcrysgro.2003.12.003
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发表时间：
2004-03-01
影响因子：
1.8
通讯作者：
Suzuki, T
中科院分区：
文献类型：
--
作者：
Kim, SG;Kim, WT;Suzuki, T
我们通过将溶质再分布（或潜热释放）定位到相场界面内的一个狭窄区域中来减少凝固相场模型中的界面扩散。对对称和单侧系统中枝晶凝固的数值计算与标准相场模型和反陷阱模型[Phys.Rev.Lett. 87（2001）115701]，表明薄界面相场模型中的反常界面效应可以得到有效抑制。由于采用抛物势代替四阶势，使得该模型能有效地抑制由于界面区域清晰而引起的两个紧密界面间的虚假吸引相互作用。(C)2003 Elsevier B.V.保留所有权利。
We reduce the interface diffuseness in phase-field modeling of solidification by localizing the solute redistribution (or latent heat release) into a narrow region within the phase-field interface. The numerical computations on the dendritic solidification in a symmetric case and in an one-sided system yield quantitatively the same results with the standard phase field model and the anti-trapping model [Phys. Rev. Lett. 87 (2001) 115701], respectively, indicating the anomalous interfacial effects in thin interface phase field model can be effectively suppressed. The adoption of the parabolic potential instead of the fourth-order potential makes this model effective in suppressing a spurious attractive interaction between two closely spaced interfaces due to a clear cut of interface region. (C) 2003 Elsevier B.V. All rights reserved.