arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2007.03793math.APcs.NAmath.NA
收藏

表面扩散流的近似:具有简并迁移率的二阶变分Cahn-Hilliard模型

Approximation of surface diffusion flow: a second order variational Cahn--Hilliard model with degenerate mobilities

Elie Bretin, Simon Masnou, Arnaud Sengers, Garry Terii

摘要:

本文用Cahn-Hilliard型模型处理表面扩散流的近似问题。介绍并分析了一个新的二阶变分相场模型,它将经典的Cahn-Hilliard能量与两个简并迁移率联系起来。这种关联允许获得锐极限的近似阶数。在第二部分中,我们提出了一些简单而有效的数值方案来近似的解决方案,我们提供了数值的2D和3D实验,说明我们的模型与其他Cahn-Hilliard模型相比的兴趣。

英文摘要:

This paper tackles the approximation of surface diffusion flow using a Cahn--Hilliard-type model. We introduce and analyze a new second order variational phase field model which associates the classical Cahn--Hilliard energy with two degenerate mobilities. This association allows to gain an order of approximation of the sharp limit. In a second part, we propose some simple and efficient numerical schemes to approximate the solutions, and we provide numerical 2D and 3D experiments that illustrate the interest of our model in comparison with other Cahn--Hilliard models.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑