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arXiv 2108.08437math.NAcs.NA
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时间分数阶相场方程的能量稳定L2格式

Energy Stable L2 Schemes for Time-Fractional Phase-Field Equations

Chaoyu Quan, Boyi Wang

摘要:

本文研究了时间分数阶相场方程的两种高阶L2格式的能量稳定性。我们给出了L2算子的一个新的形式和一些新的性质,证明了任意相场方程的L2标量辅助变量格式的能量有界性(初始能量)和Allen-Cahn方程的隐-显L2 Adams-Bashforth格式的分数阶能量律.稳定性分析是基于一个新的Cholesky分解最近提出的一些我们。

英文摘要:

In this article, the energy stability of two high-order L2 schemes for time-fractional phase-field equations is established. We propose a reformulation of the L2 operator and also some new properties on it. We prove the energy boundedness (by initial energy) of an L2 scalar auxiliary variable scheme for any phase-field equation and the fractional energy law of an implicit-explicit L2 Adams--Bashforth scheme for the Allen--Cahn equation. The stability analysis is based on a new Cholesky decomposition proposed recently by some of us.

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。

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