Validity of the essential assumption in a projection operator method

研究成果: Contribution to journalArticle査読

11 被引用数 (Scopus)

抄録

The projection operator method developed by Mori involves the essential assumption that chaotic motion is successfully divided into a coherent motion and a fluctuating one. We investigate the validity of the assumption using the Kuramoto-Sivashinsky equation as a model equation of chaotic systems. It has been found that the assumption is reasonable for both long wave modes and short wave modes. We have also evaluated a value of the eddy viscosity as 9.0 by extracting the nonlinear term from the coherent part. This value is consistent with the former estimates with other methods.

本文言語英語
論文番号046210
ジャーナルPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
74
4
DOI
出版ステータス出版済み - 10 23 2006
外部発表はい

All Science Journal Classification (ASJC) codes

  • 統計物理学および非線形物理学
  • 統計学および確率
  • 凝縮系物理学

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