垂直管内固気液三相気泡流の体積率に関する研究

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The volumetric fractions of each phase in air-water-particle three-phase bubbly flows were measured in vertical pipes of about 10m in height, and of 20.9, 30.8 and 50.4mm inside diameter, respectively. The solid particles used in this experiment were three kinds of spherical particles of 1.15, 2.56 and 4.16mm mean diameter, made of aluminum ceramics with 2270-2400kg/m^3 density. Effects of the volumetric fluxes of each phase, the particle diameter and the pipe diameter on the volumetric fractions of each phase were discussed in this experimental range. Then, empirical correlations of the volumetric fractions of each phase were proposed using dimensionless numbers such as the Froude number, the Reynolds number and the volumetric flow fraction. The differences between the measured and calculated volumetric fractions were ±10.8%, ±8.91% and ±0.397% for the solid, gas and liquid phase, respectively.
1991-10-25