Effective viscosity and time correlation for the Kuramoto-Sivashinsky equation

    研究成果: Contribution to journalArticle査読

    4 被引用数 (Scopus)

    抄録

    A shock-like structure appears in a time-averaged pattern produced by the Kuramoto-Sivashinsky equation and the noisy Burgers equation with fixed boundary conditions. We show that the effective viscosity computed from the width of the time-averaged shock structure is consistent with that computed from the time correlation of the fluctuations. The effective viscosity depends on the lengthscale, although our system size is not sufficiently large to satisfy the asymptotic dynamic scaling law. We attempt to determine the effective viscosity in a finite size system with the projection operator method.

    本文言語英語
    ページ(範囲)879-887
    ページ数9
    ジャーナルProgress of Theoretical Physics
    107
    5
    DOI
    出版ステータス出版済み - 5 2002

    All Science Journal Classification (ASJC) codes

    • 物理学および天文学(その他)

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