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Prikladnaya Mekhanika i Tekhnicheskaya Fizika, 2023, Volume 64, Issue 3, Pages 20–31
DOI: https://doi.org/10.15372/PMTF202215175 (Mi pmtf1302) 		 
This article is cited in 2 scientific papers (total in 2 papers)

Influence of sinusoidal flow pulsations of the dispersed phase on the flow characteristics of immiscible viscous liquids in a T-type microchannel

A. V. Kovalevab, A. A. Yagodnitsynaab, A. V. Bilskya

a S.S. Kutateladze Institute of Thermophysics, Siberian Division of the Russian Academy of Sciences
b Novosibirsk State University
Full-text PDF (569 kB) Citations (2) English version article
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DOI: https://doi.org/10.15372/PMTF202215175
Abstract: The influence of sinusoidal pulsations of the flow rate of the dispersed phase on the flow characteristics of immiscible high-viscosity liquids in a T-shaped microchannel has been studied. The flow regimes in the unperturbed flow and in the flow subjected to external perturbations with different frequencies and amplitudes were visualized. A dimensionless complex is proposed that describes the transition from parallel to plug flow due to external pulsations for a fixed capillarity number of the carrier phase. The application of perturbations to the plug flow regime is found to lead to flow stabilization and to a reduction in the spread of values of the generated plugs at a frequency equal to the natural frequency of plug separation in the unperturbed flow. The average length of the plugs and the spread of its values are shown to increase with decreasing perturbation frequency.
Keywords: microchannels, liquid-liquid flows, plug regime, stability of parallel flow, external perturbations, pulsations.
Funding agency Grant number
Russian Science Foundation 21-79-10307
Received: 21.07.2022
Revised: 13.10.2022
Accepted: 27.10.2022
English version:
Journal of Applied Mechanics and Technical Physics, 2023, Volume 64, Issue 3, Pages 378–387
DOI: https://doi.org/10.1134/S0021894423030033
Bibliographic databases:
Document Type: Article
UDC: 532.54
Language: Russian
Citation: A. V. Kovalev, A. A. Yagodnitsyna, A. V. Bilsky, “Influence of sinusoidal flow pulsations of the dispersed phase on the flow characteristics of immiscible viscous liquids in a T-type microchannel”, Prikl. Mekh. Tekh. Fiz., 64:3 (2023), 20–31; J. Appl. Mech. Tech. Phys., 64:3 (2023), 378–387
Citation in format AMSBIB
\Bibitem{KovYagBil23}
\by A.~V.~Kovalev, A.~A.~Yagodnitsyna, A.~V.~Bilsky
\paper Influence of sinusoidal flow pulsations of the dispersed phase on the flow characteristics of immiscible viscous liquids in a T-type microchannel
\jour Prikl. Mekh. Tekh. Fiz.
\yr 2023
\vol 64
\issue 3
\pages 20--31
\mathnet{http://mi.mathnet.ru/pmtf1302}
\crossref{https://doi.org/10.15372/PMTF202215175}
\elib{https://elibrary.ru/item.asp?id=53804226}
\transl
\jour J. Appl. Mech. Tech. Phys.
\yr 2023
\vol 64
\issue 3
\pages 378--387
\crossref{https://doi.org/10.1134/S0021894423030033}
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    • This publication is cited in the following 2 articles:
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