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Farther Research on Nonlinear Computational Instability Problems

  • Ji Zhongzhen ,
  • Yang Xiaozhong ,
  • Lin Wantao
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  • National Key Laboratry of Atmospheric Science and Geophysics, Institute of Atmosphere Physics, Chinese Academy of Sciences, Beijing 100029

Received date: 2001-02-15

  Online published: 2001-01-10

Abstract

Some new researchs on nonlinear computational instability are introduced, the contents are as fol-lows :(1)Three types of representative evolution equations are analyzed, and the close relationship between the nonlinear computational stability and instability of their corresponding difference the properties of their solution is re-vealed ;(2)Nonlinear computation instability problem of conservative difference equations with nonperiodic bound-ary conditions is further discussed, and some effective ways to avoid nonlinear computation instability are included ;(3)Nonlinear computation instability problem of nonconservative difference equationswith aperiodic boundary condi-tion is focused on by using nonlinear advection equations as examples, and “synthetically analysis method” is given to judge their computation stability

Cite this article

Ji Zhongzhen , Yang Xiaozhong , Lin Wantao . Farther Research on Nonlinear Computational Instability Problems[J]. Journal of University of Chinese Academy of Sciences, 2001 , 18(1) : 59 -65 . DOI: 10.7523/j.issn.2095-6134.2001.1.010

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