Abstract
ABSTRACT Hydrodynamics of gas-liquid flow was investigated in vertical pipes of different diameters. Both upward and downward flows were studied in bubbly regime. Local flow parameters (liquid velocity, void fraction, wall shear stress, fluctuation intensities) were measured using an electrodiffusional method. Experiments in a bubbly flow were made with controlled bubble size, and the effect of bubble size on the flow characteristics was investigated. A special technique for data processing allowed to separate the large-scale structure of an upward slug flow.
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