垂直管内固液二相流の各相体積率の推算

概要

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Accurate estimation of volumetric fractions in liquid-solid two-phase flow is required to design fluid machinery such as lifting facilities of manganese nodules and hydraulic transport systems for solids. The volumetric fraction of the solid phase is measured in vertical pipes of 20.9, 30.6 and 50.8 mm inside diameters. The solid particles used in the experiments are four kinds of spherical particles of 1.14, 2.57, 4.17(aluminum ceramics) and 2.96 mm (aluminum) mean diameters. A method of estimation of volumetric fractions has already been proposed by the authors ; it incorporates the suspension volumetric flux into the drift-flux model. In this paper, the correlations in the method are modified to be applied to the extended range of flow conditions. The results estimated by this method agree well with the present experimental results, and also with those obtained by other researchers.
1990-01-25