Effects of Surface Tension on Two-Phase Gas-Liquid Flows in Horizontal Small Diameter Pipes

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概要

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• The purpose of the present study is to clarify both the surface tension and the pipe diameter effects on two-phase flows in horizontal small diameter pipes. In the experiments, four-kinds of test liquids with different fluid properties were used together with 3, 5 and 9 mm i.d. test pipes. The flow parameters studied were flow pattern, bubble size, liquid film thickness, void fraction and pressure drop, etc. The flow patterns covered were bubbly, slug, and annular flows. From the measured data, the data of interfacial friction force per unit volume, Fi, was also obtained. By comparing data obtained in different pipe and test liquid combinations, the effects of the surface tension and the pipe diameter on the flow parameters have been clarified. In addition, new correlations of mean liquid film thickness and interfacial friction factor in annular flow have been derived with some dimensionless groups.

著者

• SADATOMI Michio

  Dept. of Advanced Mechanical Systems, Kumamoto University

• KAWAHARA Akimaro

  Dept. of Advanced Mechanical Systems, Kumamoto University

• MATSUO Masatoshi

  Pump Design Dept., Engine Components Design Div., Hitachi, Ltd.

• ISHIMURA Katsuhiro

  Dept. of Advanced Mechanical Systems, Kumamoto University

関連論文

• Effects of Surface Tension on Two-Phase Gas-Liquid Flows in Horizontal Small Diameter Pipes
• H207 MODELING OF VOID DIFFUSION COEFFICIENT IN A TWO-PHASE SUBCHANNEL FLOW(BWR thermal hydraulics)
• B304 EFFECTS OF REDUCED SURFACE TENSION ON TWO-PHASE GAS-LIQUID FLOWS IN HORIZONTAL SMALL DIAMETER PIPES(Multiphase Flow-2)
• Prediction of Gas-Liquid Two-Phase Slug Flow Characteristics in Vertical Small Diameter Pipes by a One-Dimensional Two-Fluids Model

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