三層モデルによるノズル内一成分気液二相臨界流の解析　蒸気‐水および二酸化炭素による実験との比較

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  • Application of Three-Layer Model Analysis on Single-Component Two-Phase Critical Flow through Converging Nozzle. Comparison of the Experimental Results of Steam-Water and Carbon Dioxide with Calculations.
  • 3ソウ モデル ニ ヨル ノズルナイ 1 セイブン キエキ 2ソウ リンカイリ

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Two-phase critical flow with phase change through a converging nozzle is investigated and discussed in terms of the applications of three-layer model analysis, which was already reported for a case of two-component two-phase flow by Ochi & Ayukawa. In the theoretical analysis of single-component two-phase flow in rapid phase change, there are some difficulties arising from the modeling of a complicated flow pattern at the interface. The calculated results using our proposed model are in good agreement with some experimental data of the flow rate and the pressure of carbon dioxide or steam-water mixture flows. The flow properties in each layer through the channel are discussed in comparison with the completely separated flow or the homogeneous flow model. It is found that the three layer model is a considerably useful method for single-component two-phase flow with papid change of state in variable-area channels.

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