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The problems of the upward monodispersed microbubble flow in a vertical tube

Abstract

The paper presents the first experimental results concerning the wall shear stress in an upward monodispersed microbubble flow in vertical tube. A bubble generator using a microfluid focusing technique was designed to produce monodispersed submillimeter bubbles. The experimental results allow to think that there is an optimal size of the bubbles and the optimal gas fraction in the bubble sublayer that provide the maximal mass transfer coefficient beween the flow and the tube wall.

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Correspondence to L. S. Timkin.

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Timkin, L.S., Gorelik, R.S. The problems of the upward monodispersed microbubble flow in a vertical tube. J. Engin. Thermophys. 18, 69–71 (2009). https://doi.org/10.1134/S1810232809010093

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Keywords

  • Wall Shear Stress
  • Tube Wall
  • Bubble Diameter
  • Vertical Tube
  • Engineer THERMOPHYSICS