一次元三流体モデルに基づく固気液三相流の解析に必要となる相間運動量輸送の構成方程式の導出

概要

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Derivation of constitutive equations for interfacial momentum transfer between two phases in three-phase flow was carried out in this study. For a preparation of this derivation, the validity of Andersen's equation for the interfacial momentum transfer in two-phase flow was examined. This examination clarified that Andersen's equation cannot be applied when the density difference of two phases or a body force is small. A new constitutive equation for the interfacial momentum transfer in two-phase flow, which can be applied even to the above-mentioned case, was derived from the area-averaged momentum equations. Then, similar constitutive equations for the interfacial momentum transfer between two phases in three-phase flow were derived using drift-flux correlations for hypothetical two-phase flows which are conceived by excluding one phase from the three phases. Constitutive equations for drag coefficients between two phases were also proposed.
1991-04-25