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arXiv 1302.6892cond-mat.mtrl-sci
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势流中自由枝晶生长的选择理论

Selection theory of free dendritic growth in a potential flow

Martin von Kurnatowski, Thomas Grillenbeck, Klaus Kassner

摘要:

Kruskal-Segur方法的选择理论在扩散限制或拉普拉斯增长的扩展通过结合Zauderer分解方案。这样,非线性体方程变得易于处理。为了证明该方法,我们将其应用到二维晶体生长的势流。我们省略了对同一系统[T. Fischaleck,K. Kassner,EPL 81,54004(2008)],从而展示了该方法将数学严谨性扩展到比迄今为止可获得的更复杂的问题的能力。

英文摘要:

The Kruskal-Segur approach to selection theory in diffusion-limited or Laplacian growth is extended via combination with the Zauderer decomposition scheme. This way nonlinear bulk equations become tractable. To demonstrate the method, we apply it to two-dimensional crystal growth in a potential flow. We omit the simplifying approximations used in a preliminary calculation for the same system [T. Fischaleck, K. Kassner, EPL 81, 54004 (2008)], thus exhibiting the capability of the method to extend mathematical rigor to more complex problems than hitherto accessible.

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