垂直管内固液二相流の二流体モデルによる解析に必要な構成方程式の検討

概要

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In order to make an accurate prediction of two-phase flow with a two-fluid model, it is necessary to establish a set of correct constitutive equations. The constitutive equations for the analyses of the solid-liquid two-phase flow in vertical pipes were examined in this study. Seven kinds of equations for interfacial momentum transfer were derived from the constitutive equations used in the gas-liquid two-phase flow analyses. It was confirmed that the most accurate prediction is achieved when Andersen's momentum transfer equation is adopted with correlations for the distribution parameter and suspension velocity of solid particles proposed by the authors. The constitutive equation for momentum transfer between a wall and each phase was deduced from the experimental correlation of frictional pressure drop. Calculated results agree well with experimental data with the assumption that there is no momentum transfer between the solid phase and the wall.
1990-05-25