Rheological Properties for Microbubble/Dilute Polymer Mixtures Passing through Small Orifices

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.

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Drag Reduction Effect of Microbubble/Water Mixtures and Complex Fluids into Capillary Flows

Ushida

Hasegawa

Narumi

et al. 2012

J. Soc. Rheol., Jpn

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Rheological Properties for Microbubble/Dilute Polymer Mixtures Passing through Small Orifices

Cited by 1 publication

References 25 publications

Drag Reduction Effect of Microbubble/Water Mixtures and Complex Fluids into Capillary Flows

Drag Reduction Effect of Microbubble/Water Mixtures and Complex Fluids into Capillary Flows

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