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論文

Some characteristics of gas-liquid two-phase flow in vertical large-diameter channels

Shen, X.*; Schlegel, J. P.*; 日引 俊*; 中村 秀夫

Nuclear Engineering and Design, 333, p.87 - 98, 2018/07

 被引用回数:4 パーセンタイル:71.63(Nuclear Science & Technology)

Two phase flows in large-diameter channels are important to efficiently and safely transfer mass and energy in a wide variety of applications including nuclear power plants. Two-phase flows in vertical large-diameter channels, however, show much more complex multi-dimensional nature than those in small diameter channels. Various constitutive equations are required to mathematically close the model to predict two-phase flows with two-fluid model. Validations of the constitutive equations require extensive experiment effort. This paper summarizes the recent experimental studies on two-phase flows in vertical large-diameter channels, which includes measuring technique and available databases. Then, a comprehensive review of constitutive equations is provided covering flow regime transition criteria, drift-flux correlations, interfacial area concentration correlations and one- and two-group interfacial area transport equation(s), with discussions on typical characteristics of large-diameter channel flows. Recent 1D numerical simulations of large-diameter channel flows is reviewed too. Finally, future research directions are suggested.

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