Volume 42, Issue 5 pp. 1037-1044
Research Article

Flow Regimes of Viscous Immiscible Liquids in T-Type Microchannels

Andrey V. Minakov

Corresponding Author

Andrey V. Minakov

Kutateladze Institute of Thermophysics, SB RAS, 1 Lavrentev ave., 630090 Novosibirsk, Russia

Siberian Federal University, 79 Svobodny pr., 660041 Krasnoyarsk, Russia

Correspondence: Andrey V. Minakov ([email protected]), Kutateladze Institute of Thermophysics, SB RAS, 1 Lavrentev ave., 630090 Novosibirsk, Russia.Search for more papers by this author
Anna A. Shebeleva

Anna A. Shebeleva

Kutateladze Institute of Thermophysics, SB RAS, 1 Lavrentev ave., 630090 Novosibirsk, Russia

Siberian Federal University, 79 Svobodny pr., 660041 Krasnoyarsk, Russia

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Anna A. Yagodnitsyna

Anna A. Yagodnitsyna

Kutateladze Institute of Thermophysics, SB RAS, 1 Lavrentev ave., 630090 Novosibirsk, Russia

Novosibirsk State University, 2 Pirogova str., 630090 Novosibirsk, Russia

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Alexander V. Kovalev

Alexander V. Kovalev

Kutateladze Institute of Thermophysics, SB RAS, 1 Lavrentev ave., 630090 Novosibirsk, Russia

Novosibirsk State University, 2 Pirogova str., 630090 Novosibirsk, Russia

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Artur V. Bilsky

Artur V. Bilsky

Kutateladze Institute of Thermophysics, SB RAS, 1 Lavrentev ave., 630090 Novosibirsk, Russia

Novosibirsk State University, 2 Pirogova str., 630090 Novosibirsk, Russia

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First published: 25 February 2019
Citations: 14

Abstract

A computational and experimental study of the flow regimes of a mixture of castor and paraffin oils in a T-type microchannel with 200 × 400 µm cross section was carried out. The ranges of parallel, slug, droplet, and rivulet flow regimes of the tested mixture were defined. According to the experimental results, a flow regime map was constructed for this mixture depending on the Weber number multiplied by the Ohnesorge number. A correlation of the length of paraffin oil slugs to the fluid flow ratio was established. The experimental data were compared with results of numerical simulation. A good agreement between calculation and experimental data was achieved in terms of reproduction of flow regimes, phase boundaries, and slug length.

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