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INFLUENCE OF SINUSOIDAL PERTURBATIONS IN THE DISPERSED PHASE FLOW RATE ON THE FLOW CHARACTERISTICS OF IMMISCIBLE VISCOUS LIQUIDS IN A T-JUNCTION MICROCHANNEL

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Journal of Applied Mechanics and Technical Physics Aims and scope

Abstract

The influence of sinusoidal pulsations in the dispersed phase flow rate on the flow characteristics of immiscible high-viscosity liquids in a T-junction microchannel was 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 perturbations for a fixed capillary number of the carrier phase. The application of perturbations to the plug flow regime was found to lead to flow stabilization and to a reduction in the range of lengths of the generated plugs at a frequency equal to the natural frequency of plug formation in the unperturbed flow. The average plug length and the range of its values are shown to increase with decreasing perturbation frequency.

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Authors and Affiliations

  1. Kutateladze Institute of Thermophysics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia

    A. V. Kovalev, A. A. Yagodnitsyna & A. V. Bilsky

  2. Novosibirsk National Research State University, Novosibirsk, Russia

    A. V. Kovalev & A. A. Yagodnitsyna

Authors
  1. A. V. Kovalev
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  2. A. A. Yagodnitsyna
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  3. A. V. Bilsky
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Correspondence to A. V. Kovalev.

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Translated from Prikladnaya Mekhanika i Tekhnicheskaya Fizika, 2023, Vol. 64, No. 3, pp. 20-31. https://doi.org/10.15372/PMTF20230303.

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Kovalev, A.V., Yagodnitsyna, A.A. & Bilsky, A.V. INFLUENCE OF SINUSOIDAL PERTURBATIONS IN THE DISPERSED PHASE FLOW RATE ON THE FLOW CHARACTERISTICS OF IMMISCIBLE VISCOUS LIQUIDS IN A T-JUNCTION MICROCHANNEL. J Appl Mech Tech Phy 64, 378–387 (2023). https://doi.org/10.1134/S0021894423030033

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  • DOI: https://doi.org/10.1134/S0021894423030033

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