Void fraction of nitrogen-water flow in flat microchannels

In this study, we investigated a behavior of time-averaged void fraction in five flat microchannels with cross sectional area of 0.05x10, 0.09x10, 0.15x10, 0.05x20 and 0.15x20 mm 2 . The experiments have been conducted at fixed superficial velocity of liquid phase. The dependence between time-averag...

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Bibliographic Details
Published in:Journal of physics. Conference series 2021-04, Vol.1867 (1), p.12037
Main Authors: Dementyev, Yu A, Ronshin, F V, Chinnov, E A
Format: Article
Language:English
Subjects:
Area
Investigations
Lager
Liquid phases
Microchannels
Physics
Time dependence
Void fraction
Water flow
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Summary:In this study, we investigated a behavior of time-averaged void fraction in five flat microchannels with cross sectional area of 0.05x10, 0.09x10, 0.15x10, 0.05x20 and 0.15x20 mm 2 . The experiments have been conducted at fixed superficial velocity of liquid phase. The dependence between time-averaged void fraction and superficial gas velocity has been studied. It was shown, that this dependence may be approximate by power law with R 2 =0.968. The dependence between time-averaged void fraction and homogeneous void fraction has been investigated. It was shown that the height of channel has not been affected by void fraction behavior, however the width of channel has influence: with an increasing of the channel width the dependence line shifts towards lager homogeneous fractions. However to take into account the influence of the channel width on surface area occupied by gas and to generalize data further investigations are required.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1867/1/012037