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线性Boussinesq方程的多辛RungeKutta Nystrom算法

洪丽莉1,2, 张 凯2, 张 然2   

  1. 1. 辽宁科技大学 理学院, 辽宁省 鞍山 114051; 2. 吉林大学 数学学院, 长春 130012
  • 收稿日期:2007-02-06 修回日期:1900-01-01 出版日期:2007-11-26 发布日期:2007-11-26
  • 通讯作者: 张 然

Multisymplectic RungeKutta Nystrom Methodsfor Linear Boussinesq Equations

HONG Lili1,2, ZHANG Kai2, ZHANG Ran2   

  1. 1. College of Sciences, Liaoning Science and Technology University, Anshan 114051, Liaoning Province, China;2. College of Mathematics, Jilin University, Changchun 130012, China
  • Received:2007-02-06 Revised:1900-01-01 Online:2007-11-26 Published:2007-11-26
  • Contact: ZHANG Ran

摘要: 考虑线性Boussinesq方程的多辛Hamilton形式, 利用RungeKutta Nystrom算法离散此多辛结构, 得到了离散多辛守恒律, 并求得一个等价于RungeKutta Nystrom积分的新格式, 证明了它的稳定性条件. 数值实验结果表明了理论分析的正确性.

关键词: 线性Boussinesq方程, RungeKuttaNystrom算法, 多辛, 守恒律, 稳定性

Abstract: We considered the multisymplectic Hamilton system for the linear Boussinesq equations. We applied Runge Kutta Nystrom methods to discreting the multisymplectic scheme, and obtained the discrete multisymplectic conservation law. Then we constructed a new scheme which is equivalent to the RungeKutta Nystrom integral, and derived its stability condition. Finally we presented some numerical experiments which illustrate the validity of the scheme.

Key words: linear Boussinesq equation, RungeKutta Nystrom method, multisymplectic, conservation law, stability

中图分类号: 

  • O241.8