计算物理 ›› 1997, Vol. 14 ›› Issue (1): 68-74.

• 论文 • 上一篇    下一篇

辛差分格式的守恒量及其稳定性

季江徽, 廖新浩, 刘林   

  1. 南京大学天文系, 210093
  • 收稿日期:1995-09-26 修回日期:1996-09-14 出版日期:1997-01-25 发布日期:1997-01-25
  • 基金资助:
    国家基础性研究重大关键项目

THE CONSERVATION OF THE SYMPLECTIC DIFFERENCE-SCHEME AND ITS STABILITY

Ji Jianghui, Liao Xinhao, Liu Lin   

  1. Astronomy Department, Nanjing University, Nanjing 210093
  • Received:1995-09-26 Revised:1996-09-14 Online:1997-01-25 Published:1997-01-25

摘要: 讨论了Hamilton系统辛差分格式守恒量的存在性问题以及它们与辛差分格式的稳定性间的关系。结果表明,辛差分格式使Hamilton系统的所有守恒量随时间没有线性变化。一般情况下,差分格式稳定,其守恒量收敛。

关键词: 辛差分格式, 形式积分, 稳定性

Abstract: Discussion is given on the existance of conservative laws of symplectic difference scheme for the Hamilton System and the relationship between them and the stability of the symplectic difference-scheme. The results show there are not any linear variations in all conservative laws of Hamilton System for symplectic difference scheme. In general, when the symplectic differencescheme stable, the conservative laws are convergent.

Key words: symplectic difference scheme, formal integral, stability

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