The Influence of the Asymptotic Regime on the RS-IMEX
The Influence of the Asymptotic Regime on the RS-IMEX
复制标题
渐近状态对 RS-IMEX 的影响
DOI:
10.1007/978-3-319-63082-3_7
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发表时间:
2017
期刊:
影响因子:
--
通讯作者:
Jochen Schütz
中科院分区:
文献类型:
--
作者:
Klaus Kaiser;Jochen Schütz
In this work, we investigate the performance and explore the limits of a novel implicit-explicit splitting (Kaiser and Schütz, A high-order method for weakly compressible flows. Commun. Comput. Phys. 22(4): 1150–1174, 2017) for the efficient treatment of singularly perturbed ODEs. We consider a singularly perturbed ODE where, based on the choice of initial conditions, the unperturbed equation does not necessarily describe the behavior of the perturbed one accurately. For the splitting presented in Kaiser and Schütz, (A high-order method for weakly compressible flows. Commun. Comput. Phys. 22(4): 1150–1174, 2017), this has a tremendous influence as it explicitly depends on the solution to the unperturbed equation. That this indeed poses a problem is shown numerically; but also the remedy of using the ‘correct’ asymptotics is presented. Comparisons with a fully implicit and a standard implicit-explicit splitting are shown.
影响因子:
3.7
作者:
K. Kaiser;J. Schütz
通讯作者:
K. Kaiser;J. Schütz