Asymptotic solvers for second-order differential equation systems with multiple frequencies

Asymptotic solvers for second-order differential equation systems with multiple frequencies
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多频率二阶微分方程组的渐近求解器

DOI:
10.1007/s10092-013-0078-4
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发表时间:
2014-03
期刊:
影响因子:
1.7
通讯作者:
Arieh Iserles
Arieh Iserles
中科院分区:
数学3区
文献类型:
--
作者:
Marissa Condon;Alfredo Deaño;Jing Gao;Arieh Iserles

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本文构造了一个渐近展开式,求解具有多频率强振动强迫项的二阶微分方程组。导出了振荡参数的幂倒数渐近展开式,其截断结果是一种非常有效的离散所讨论的微分方程组的方法。数值实验表明,与标准的龙格-库塔方法相比,渐近方法的有效性。
In this paper, an asymptotic expansion is constructed to solve second-order differential equation systems with highly oscillatory forcing terms involving multiple frequencies. An asymptotic expansion is derived in inverse of powers of the oscillatory parameter and its truncation results in a very effective method of dicretizing the differential equation system in question. Numerical experiments illustrate the effectiveness of the asymptotic method in contrast to the standard Runge–Kutta method.
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发表时间: 2010-03
期刊: --
影响因子: --
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通讯作者: E. Hairer;G. Wanner
DOI: 10.1098/rspa.2009.0481
发表时间: 2010-06
期刊: Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences
影响因子: --
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影响因子: 2.1
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影响因子: 1.1
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