Abstract
Measurement of bubbly two-phase flow parameters in a vertical pipe were performed. To keep the pipe Reynolds number below that for single-phase turbulent transition, a water-glycerin solution was used as the test liquid. Local void fraction and liquid velocity profiles along with the wall shear stress were measured by an electrochemical method. Experiments were made with bubbles of two different sizes. As the gas flow rate was increased, a gradual development of the liquid velocity profile from the parabolic Poiseuille flow to a flattened two-phase profile was observed. The evolution of the wall shear stress and of the velocity fluctuations were also quantified.
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Centre National de la Recherche Scientifique. Université Joseph Fourier, Institut National Polytechnique de Grenoble.
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Kashinsky, O.N., Timkin, L.S. & Cartellier, A. Experimental study of “laminar” bubbly flows in a vertical pipe. Experiments in Fluids 15, 308–314 (1993). https://doi.org/10.1007/BF00223408
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DOI: https://doi.org/10.1007/BF00223408