Statistical analysis of Taylor bubble formation in a capillary pipe

F. V. Ron'shin^ab, D. Yu. Kochkin^ab, Yu. A. Dementyev^ab, K. S. Eloyan^ab, I. S. Vozhakov<sup>ab

a</sup> Novosibirsk State University, Novosibirsk, Russia
^b S.S. Kutateladze Institute of Thermophysics, Siberian Division of the Russian Academy of Sciences, Novosibirsk, Russia

Abstract: An experimental study of the Taylor regime in a pipe with an inner diameter of 2 mm has been carried out. A method for studying the Taylor regime in a capillary pipe using automatic image analysis to measure the main characteristics of bubbles has been developed and applied for the first time. The dependences of the gas bubble and liquid slug lengths on the gas and liquid velocities are studied. It was found that in the region of the stable Taylor regime, the standard deviation of the bubble sizes is close to the accuracy of the research method. The dispersion of the bubble size distribution increases near the regime boundary. It is shown that, based on the statistical analysis of a large amount of data, it can be concluded that there is a coalescence and fragmentation of bubbles.

Keywords: capillary pipe, two-phase flow, Taylor regime, statistical analysis.

Received: 10.12.2021
Revised: 10.01.2021
Accepted: 11.01.2021

DOI: 10.21883/PJTF.2022.06.52210.19105

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