A NEW PERSPECTIVE FOR THE MIXING OF YIELD STRESS FLUIDS WITH ANCHOR IMPELLERS

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著者

    • BERTRAND F.
    • UPPEI-Paprican Chair, Department of Chemical Engineering, Ecole Polytechnique
    • TANGUY P. A.
    • UPPEI-Paprican Chair, Department of Chemical Engineering, Ecole Polytechnique

抄録

The mixing of yield stress fluids with an anchor impeller is investigated numerically in the laminar regime using a three-dimensional finite element method. First, it is shown that the flow behavior is strongly influenced by the level of viscoplasticity and that mixing is rather inefficient in such a case. Next, correlations of the power number versus the Reynolds number are presented for different values of the Bingham number. In particular, it is established that the Metzner-Otto concept remains valid for fluid exhibiting a yield stress and that the Metzner and Otto constant (<I>K<SUB>s</SUB></I>) varies slightly over a wide range of Bingham numbers (<I>Bi</I> ≤ 75M). Finally, the 25-year old experimental findings of Nagata are reviewed and clarified.

収録刊行物

  • Journal of chemical engineering of Japan

    Journal of chemical engineering of Japan 29(1), 51-58, 1996-02-20

    The Society of Chemical Engineers, Japan

参考文献:  23件中 1-23件 を表示

被引用文献:  1件中 1-1件 を表示

各種コード

  • NII論文ID(NAID)
    10003813370
  • NII書誌ID(NCID)
    AA00709658
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    00219592
  • データ提供元
    CJP書誌  CJP引用  J-STAGE 
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