arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2112.04321math.NAcs.NA
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具有动态边界条件的半线性波方程的分裂格式

Splitting schemes for the semi-linear wave equation with dynamic boundary conditions

Robert Altmann

AI总结:

本文为具有半线性动力学和声学边界条件的波方程提出了一阶和二阶体-面分裂格式,通过将系统重新解释为耦合系统或利用自然分离特性,在数值实验中实现了相应的收敛性。

摘要:

本文为具有半线性类型动力学和声学边界条件的波方程引入了新颖的一阶和二阶体-面分裂格式。对于动力学边界条件,我们提出将系统方程重新解释为耦合系统。这意味着体动力学和面动力学被分别建模,并通过耦合约束连接。这使得分裂格式的实现成为可能,其在数值实验中表现出一阶收敛性。另一方面,声学边界条件自然地分离了体动力学和面动力学。在此,正如我们在数值上所揭示的,Lie和Strang分裂格式分别达到一阶和二阶收敛。

英文摘要:

This paper introduces novel bulk-surface splitting schemes of first and second order for the wave equation with kinetic and acoustic boundary conditions of semi-linear type. For kinetic boundary conditions, we propose a reinterpretation of the system equations as a coupled system. This means that the bulk and surface dynamics are modeled separately and connected through a coupling constraint. This allows the implementation of splitting schemes, which show first-order convergence in numerical experiments. On the other hand, acoustic boundary conditions naturally separate bulk and surface dynamics. Here, Lie and Strang splitting schemes reach first- and second-order convergence, respectively, as we reveal numerically.

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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