Asymptotic error analysis of an IMEX Runge-Kutta method

Asymptotic error analysis of an IMEX Runge-Kutta method
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IMEX Runge-Kutta 方法的渐近误差分析

DOI:
10.1016/j.cam.2018.04.044
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发表时间:
2018
期刊:
J. Comput. Appl. Math.
影响因子:
--
通讯作者:
J. Schütz
J. Schütz
中科院分区:
--
文献类型:
--
作者:
K. Kaiser;J. Schütz

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考虑一类奇异参数ε ≠ 1的奇摄动微分方程组,用IMEX Runge-Kutta方法离散. IMEX方法所需的分裂源于极限解附近通量的线性化。我们分析了当ε→ 0时的渐近收敛阶。我们发现,在这种设置中,该计划的隐式部分的阶段顺序是非常重要的,从而解释早期的数值结果显示出密切相关的分裂计划和全隐式的错误。
We consider a system of singularly perturbed differential equations with singular parameter ε≪ 1, discretized with an IMEX Runge–Kutta method. The splitting needed for the IMEX method stems from a linearization of the fluxes around the limit solution. We analyze the asymptotic convergence order as ε→ 0. We show that in this setting, the stage order of the implicit part of the scheme is of great importance, thereby explaining earlier numerical results showing a close correlation of errors of the splitting scheme and the fully implicit one.
DOI: 10.2140/camcos.2018.13.243
发表时间: 2018-09
影响因子: 2.1
作者:
J. Zeifang;K. Kaiser;A. Beck;J. Schütz;C. Munz
通讯作者: J. Zeifang;K. Kaiser;A. Beck;J. Schütz;C. Munz
DOI: 10.4208/cicp.oa-2017-0028
发表时间: 2017-10
影响因子: 3.7
作者:
K. Kaiser;J. Schütz
通讯作者: K. Kaiser;J. Schütz
DOI: 10.1051/m2an/2019005
发表时间: 2019
期刊: ESAIM: Mathematical Modelling and Numerical Analysis
影响因子: --
作者:
Hamed Zakerzadeh
通讯作者: Hamed Zakerzadeh