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On the preservation of invariants by explicit Runge-Kutta methods
被引:55
|作者:
Calvo, M.
Hernandez-Abreu, D.
[1
]
Montijano, J. I.
Randez, L.
机构:
[1] Univ Zaragoza, Dept Matemat Aplicada, E-50009 Zaragoza, Spain
[2] Univ La Laguna, Dept Anal Matemat, San Cristobal la Laguna 38271, Spain
来源:
关键词:
initial value problems;
explicit Runge-Kutta methods;
numerical geometric integration;
preservation of invariants;
variable step-size codes;
D O I:
10.1137/04061979X
中图分类号:
O29 [应用数学];
学科分类号:
070104 ;
摘要:
A new strategy to preserve invariants in the numerical integration of initial value problems with explicit Runge-Kutta methods is presented. It is proved that this technique retains the order of the original method, has an easy and cheap implementation, and can be used in adaptive Runge-Kutta codes. Some numerical experiments with the classical code of Dormand and Prince, DoPri5(4), based on a pair of embedded methods with orders 5 and 4, are presented to show the behavior of the new method for several problems which possess invariants.
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页码:868 / 885
页数:18
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