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arXiv 2004.04274math.NAcs.NA
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隐-显一般线性方法的收敛性结果

Convergence Results for Implicit--Explicit General Linear Methods

Adrian Sandu

摘要:

本文研究了隐-显一般线性方法的定步收敛性。我们专注于一个子类的计划,是内部一致的,具有较高的阶段顺序,和良好的稳定性。给出了经典的、指数为1的微分代数方程和奇异扰动的收敛性分析结果。对于所有这些问题,IMEX GLM从类的利益收敛与一般假设下的完整的理论订单。收敛结果要求时间步长足够小,且上界与问题的刚度无关。

英文摘要:

This paper studies fixed-step convergence of implicit-explicit general linear methods. We focus on a subclass of schemes that is internally consistent, has high stage order, and favorable stability properties. Classical, index-1 differential algebraic equation, and singular perturbation convergence analyses results are given. For all these problems IMEX GLMs from the class of interest converge with the full theoretical orders under general assumptions. The convergence results require the time steps to be sufficiently small, with upper bounds that are independent on the stiffness of the problem.

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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