I102 OSCILLATORY CHARACTRISTICS OF FLOW REGIME TRANSITION INSTABILITY(Multiphase flow dynamics/non-linearity)

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概要

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• Oscillatory characteristics in the intermediate region between annular flow and slug flow are experimentally investigated. The oscillation can be caused by the dynamic interaction between the negative pressure gradient and the gas core volume in annular flow. To clarify how the oscillatory flow affects the frictional pressure gradient, time-averaged frictional pressure gradients are compared with the empirical correlations for steady state flow. The experimental result in the oscillatory flow is much greater than that predicted by the empirical correlations especially at low liquid flow rate conditions. From the simultaneous measurements of the pressure gradient and the spatio-temporal characteristics of liquid holdup, it is found that the frictional pressure gradient due to interface shear is affected by the aerated liquid film and the frictional pressure gradient due to wall shear is closely related to behavior of the flooding-type waves propagating on the liquid film.

• 一般社団法人日本機械学会の論文
• 2000-10-01

著者

• Kaji Masuo

  Dept. Of Mechanical Engineering School Of Biology-oriented Science And Technology Kinki University

• Kaji Masuo

  Dept. Of Mech. Eng. Faculty Of Biology-oriented Science And Technology Kinki University

• Nakanishi Shigeyasu

  Dept. Of Mechanical And System Engineering Faculty Of Science And Technology Ryukoku University

• YAMAUCHI Shoji

  Dept. of Electro-Mechanical Systems Engineering, Takamatsu National College of Technology

• Yamauchi Shoji

  Dept. Of Electro-mechanical Systems Engineering Takamatsu National College Of Technology

• Sawai To'oru

  Dept. Of Mechanical Engineering School Of Biology-oriented Science And Technology Kinki University

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