计算物理 ›› 1995, Vol. 12 ›› Issue (4): 565-570.

• 论文 • 上一篇    下一篇

一类演化方程的高稳定性的差分格式

曾文平   

  1. 华侨大学数学系, 泉州 362011
  • 收稿日期:1994-06-27 修回日期:1995-03-06 出版日期:1995-12-25 发布日期:1995-12-25
  • 基金资助:
    国务院侨办与福建省自然科学基金

THE DIFFERENCE SCHEMES WITH HIGHER STABILITY PROPERTIES FOR A CLASS OF EVOLUTION EQUATION

Zeng Wenping   

  1. Oversea's Chinese Univisity, Quan zhou 362011
  • Received:1994-06-27 Revised:1995-03-06 Online:1995-12-25 Published:1995-12-25

摘要: 考虑一类演化方程ut=au2k+1(其中a是常数,u2k+1=2k+1u/∂x2k+1,k=1,2……)的有限差分解法。构造了两类具有高稳定性的显式差分格式。并用引入耗散项的方法建立了两类半显式差分格式,它们是无条件稳定的且可显式地进行计算。

关键词: 耗散项, Fourier分析, 半显式与显式差分格式, 演化方程

Abstract: In order to solve a class of evolution equaiton ut=au2K+1(where a is constant, u2K+1=2K+1/∂x2K+1,K=l,2,……) two classes of explicit difference schemes with higher stability properties are constituted. And two classes of semi -explicit difference schemes are also established by introducing a dissipative term, they are unconditionally stable and can be calculated explicitly.

Key words: dissipative term, fourier analysis, semi-explicit and explicit schemes, evolution equation

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