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Heat Transfer Research
インパクトファクター: 0.404 5年インパクトファクター: 0.8 SJR: 0.264 SNIP: 0.504 CiteScore™: 0.88

ISSN 印刷: 1064-2285
ISSN オンライン: 2162-6561

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Heat Transfer Research

DOI: 10.1615/HeatTransRes.v38.i5.80
pages 473-482

Evolution of Local Characteristics of an Ascending Slug Flow in a Vertical Pipe

Oleg N. Kashinsky
Lab. of Physical and Chemical Hydrodynamics, Kutateladze Institute of Thermophysics, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russia
V. V. Randin
Institute of Thermophysics, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia
Aleksandr S. Kurdyumov
Lab. of Physical and Chemical Hydrodynamics, Kutateladze Institute of Thermophysics, Siberian Branch of Russian Academy of Sciences, Novosibirsk, Russia

要約

The experimental research on the ascending gas-liquid slug flow in a vertical pipe has been conducted. Measurements have been performed by the electrochemical method. A technique of provisional realization ensemble averaging has been practiced and used to measure distributions of liquid velocities in a liquid plug depending on the distance from the start of the slug. It is shown that, in the initial area of the liquid plug, a considerable deformation of liquid velocity profiles takes place, as compared to a one-phase flow, which is the result of the influence of a toroidal vortex flowing from under the previous gas slug. The behavior of friction at the wall corresponds completely to the liquid velocity behavior in the near-wall area of the flow.


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