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Local gas-liquid two-phase flow characteristics in rod bundle geometry

ロッドバンドル形状における局所気液二相流の流動特性

Xiao, Y.*; Shen, X.*; 三輪 修一郎*; 孫 昊旻; 日引 俊*

Xiao, Y.*; Shen, X.*; Miwa, Shuichiro*; Sun, Haomin; Hibiki, Takashi*

ロッドバンドル体系における二流体モデルの構成式の高度化を図るために、6$$times$$6ロッドバンドル体系における上昇気液二相流実験を実施した。ボイド率や界面積濃度等の局所流動パラメータを2針式光プローブで計測した。計測した断面平均ボイド率と界面積濃度の結果と、既存ドリフトフラックスモデルや界面積濃度相関式から予測した結果と比較した。

In order to develop constitutive equations of two-fluid model in rod bundle flow channels, experiments of adiabatic air-water upward two-phase flow in 6$$times$$6 rod bundle flow channel were performed. Local flow parameters such as void fraction, interfacial area concentration (IAC) and so on were measured by a double-sensor optical probe. The area-averaged void fraction and IAC data were compared with the predictions from a drift-flux model and an IAC correlation.

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