LINEAR STABILITY OF PARTITIONED RUNGE-KUTTA METHODS

被引:15
|
作者
McLachlan, R. I. [1 ]
Sun, Y. [2 ]
Tse, P. S. P. [2 ]
机构
[1] Massey Univ, IFS, Palmerston North, New Zealand
[2] Chinese Acad Sci, Acad Math & Syst Sci, LSEC, Beijing 100190, Peoples R China
基金
中国博士后科学基金; 中国国家自然科学基金;
关键词
asymptotic behavior; continued fractions; linear stability; Lobatto IIIA-IIIB methods; Pade approximants; trace of stability matrix; HAMILTONIAN-SYSTEMS; INTEGRATORS; SCHEMES; ORDER;
D O I
10.1137/100787234
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
We study the linear stability of partitioned Runge-Kutta (PRK) methods applied to linear separable Hamiltonian ODEs and to the semidiscretization of certain Hamiltonian PDEs. We extend the work of Jay and Petzold [Highly Oscillatory Systems and Periodic Stability, Preprint 95-015, Army High Performance Computing Research Center, Stanford, CA, 1995] by presenting simplified expressions of the trace of the stability matrix, tr M-s, for the Lobatto IIIA-IIIB family of symplectic PRK methods. By making the connection to Pade approximants and continued fractions, we study the asymptotic behavior of tr M-s(w) as a function of the frequency w and stage number s.
引用
收藏
页码:232 / 263
页数:32
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