管内流れにおけるマイクロバブル水および複雑流体の摩擦損失低減効果  [in Japanese] Drag Reduction Effect of Microbubble/Water Mixtures and Complex Fluids into Capillary Flows  [in Japanese]

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Author(s)

Abstract

The pressure drops and frictional coefficients were measured and estimated for water, microbubble/water mixtures (MB water), and complex fluids (surfactant solutions and polymer solutions) in capillary flows. Good agreement for water was obtained between the experimental results and theoretical value for Hagen-Poiseuille flows. For MB water, the laminarization was suggested until 4000 of the Reynolds number. Both surfactant solutions and polymer solutions exhibited the same results as MB water. In the explaining this behavior, elasticity, electrical interaction, and size effect are considered. Consequently, it is strongly suggested that electrical interaction on capillary wall is a contributing factor. In addition, surface tension was investigated and supported the discussion.

Journal

  • Nihon Reoroji Gakkaishi

    Nihon Reoroji Gakkaishi 40(4), 179-184, 2012

    The Society of Rheology, Japan

Codes

  • NII Article ID (NAID)
    130001880138
  • NII NACSIS-CAT ID (NCID)
    AN00198812
  • Text Lang
    JPN
  • ISSN
    0387-1533
  • NDL Article ID
    023976358
  • NDL Call No.
    Z14-725
  • Data Source
    NDL  J-STAGE 
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