菱形角柱群流路内の特異点付近における微視的PIV計測 MICRO-PIV FLOW MEASUREMENTS NEAR SINGULAR POINTS INSIDE A DIAMOND-SHAPED CYLINDER BUNDLE

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The interaction between the oscillating jet and the wedge produces a fluctuating flow field outside the jet which in turn affects the motion of the jet. However, microscopic evidence of these phenomena remains undisclosed. In the present study, an optical system-operated PIV technique was employed to obtain the time-wise variations of both the velocity-vector and vorticity distributions. With the aid of LDV measurements, the Reynolds stress and power spectral distributions were also acquired. In conclusion, the micro PIV measurements have for the first time disclosed the location and flow process characteristics of the edge-tone source. In addition, the micro flow behavior of reciprocating migration of the conjunct separation vortex pair over the rear edge of the third-row cylinder is confirmed as the mechanism of flip-flow oscillations induced by the edge tone phenomenon.

収録刊行物

  • 可視化情報学会誌. Suppl.  

    可視化情報学会誌. Suppl. 26(2), 237-240, 2006-09-15 

    The Visualization Society of Japan

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各種コード

  • NII論文ID(NAID)
    10018247507
  • NII書誌ID(NCID)
    AA11907562
  • 本文言語コード
    JPN
  • 資料種別
    SHO
  • ISSN
    09164731
  • NDL 記事登録ID
    8517102
  • NDL 雑誌分類
    ZM35(科学技術--物理学)
  • NDL 請求記号
    Z15-431
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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