渦巻ポンプ羽根車内の気液二相流に対する気泡流モデルによる三次元数値解析 : 第2報,ポンプ性能変化

概要

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This paper is concerned with the determination of the performance change in pumps operating under two-phase flow conditions based on the calculated distributions of velocities and void fraction, in which the mixture is assumed to be an inviscid bubbly flow with the slippage between two phases. The estimated changes in the theoretical head are confirmed with experiments within the range of the bubbly flow regime. The calculated head due to the momentum exchanges between two phases is also favorably compared with the measured value of the head loss within the same range, when the hydraulic loss due to wall friction is assumed to be zero under two-phase flow conditions. The head-loss ratio obtained shows nearly the same value as the experiments, showing this analytical model to be applicable to the prediction of the two-phase flow pump performance.
一般社団法人日本機械学会の論文
1989-08-25