Deflection-Flipping Waves in a Symmetric Channel with Spatially Periodic Expansions and Contractions(Electromagnetism, optics, acoustics, heat transfer, classical mechanics, and fluid mechanics)

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Bifurcations of flow in a two-dimensional symmetric channel with suddenly expanded sections arranged periodically and its relaxation processes are investigated numerically. Linear stability analysis revealed that the flow is subject to both a symmetry-breaking pitchfork bifurcation leading to a steady deflection and a Hopf bifurcation leading to an oscillation similar to the Tollmien-Schlichting wave. We observed two kinds of propagating waves in the relaxation to another bistable steady state, one of which is a fast wave being convected passively and the other a slow wave flipping flow deflections. It was confirmed that the deflection-flipping wave propagates downstream without decaying due to a self-sustaining mechanism of instability.

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  • Journal of the Physical Society of Japan   [巻号一覧]

    Journal of the Physical Society of Japan 75(11), "113401-1"-"113401-4", 2006-11-15  [この号の目次]

    一般社団法人日本物理学会

参考文献:  15件

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各種コード

  • NII論文ID(NAID)
    10018794316
  • NII書誌ID(NCID)
    AA00704814
  • 本文言語コード
    ENG
  • 資料種別
    SHO
  • ISSN
    00319015
  • NDL 記事登録ID
    8537263
  • NDL 雑誌分類
    ZM35(科学技術--物理学)
  • NDL 請求記号
    Z53-A404
  • データ提供元
    CJP書誌  NDL  NII-ELS  JPS 
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