Influence of surfactants on the slug flow of immiscible liquids in a curved microchannel

Standard

Influence of surfactants on the slug flow of immiscible liquids in a curved microchannel. / Kovalev, A. V.; Yagodnitsyna, A. A.; Bilsky, A. V.

в: Thermophysics and Aeromechanics, Том 32, № 4, 07.2025, стр. 897-903.

Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование

BibTeX

@article{1104f706f2d2427ba070eb8495eac545,

title = "Influence of surfactants on the slug flow of immiscible liquids in a curved microchannel",

abstract = "The dynamics of a slug flow in immiscible liquids remains incompletely understood due to the complex effects of channel geometry and the properties of the working fluids. The presence of surfactants in the system further complicates the problem. This work deals with the effect of a water solution of Tween 20 surfactant on the dynamics of a slug flow in a curved microchannel. Situations with surfactant concentrations below and above the critical concentration of micelle formation are considered. Regime maps are plotted, and three regimes of water phase dispersion are identified. It is shown that increasing the surfactant concentration leads to stabilization of slug interfaces in straight sections, while the probability of slug rupture in curved sections increases due to reduced interfacial tension and intense mixing of the surfactant within the slugs. The decisive influence of the surfactant concentration relative to the critical concentration of micelle formation on the dynamics of microdroplet detachment processes in straight and curved sections of the channel is revealed.",

keywords = "curved microchannel, flow of immiscible liquids, slug flow regime, surfactants",

author = "Kovalev, {A. V.} and Yagodnitsyna, {A. A.} and Bilsky, {A. V.}",

note = "Kovalev, A.V., Yagodnitsyna, A.A. & Bilsky, A.V. Influence of surfactants on the slug flow of immiscible liquids in a curved microchannel. Thermophys. Aeromech. 32, 897–903 (2025). https://doi.org/10.1134/S0869864325040079 This work was financially supported by a grant from the Russian Science Foundation (Project Code 23-79-01332). The test sections were made as part of a state assignment for the IT SB RAS.",

year = "2025",

month = jul,

doi = "10.1134/S0869864325040079",

language = "English",

volume = "32",

pages = "897--903",

journal = "Thermophysics and Aeromechanics",

issn = "0869-8643",

publisher = "Pleiades Publishing",

number = "4",

}

RIS

TY - JOUR

T1 - Influence of surfactants on the slug flow of immiscible liquids in a curved microchannel

AU - Kovalev, A. V.

AU - Yagodnitsyna, A. A.

AU - Bilsky, A. V.

N1 - Kovalev, A.V., Yagodnitsyna, A.A. & Bilsky, A.V. Influence of surfactants on the slug flow of immiscible liquids in a curved microchannel. Thermophys. Aeromech. 32, 897–903 (2025). https://doi.org/10.1134/S0869864325040079 This work was financially supported by a grant from the Russian Science Foundation (Project Code 23-79-01332). The test sections were made as part of a state assignment for the IT SB RAS.

PY - 2025/7

Y1 - 2025/7

N2 - The dynamics of a slug flow in immiscible liquids remains incompletely understood due to the complex effects of channel geometry and the properties of the working fluids. The presence of surfactants in the system further complicates the problem. This work deals with the effect of a water solution of Tween 20 surfactant on the dynamics of a slug flow in a curved microchannel. Situations with surfactant concentrations below and above the critical concentration of micelle formation are considered. Regime maps are plotted, and three regimes of water phase dispersion are identified. It is shown that increasing the surfactant concentration leads to stabilization of slug interfaces in straight sections, while the probability of slug rupture in curved sections increases due to reduced interfacial tension and intense mixing of the surfactant within the slugs. The decisive influence of the surfactant concentration relative to the critical concentration of micelle formation on the dynamics of microdroplet detachment processes in straight and curved sections of the channel is revealed.

AB - The dynamics of a slug flow in immiscible liquids remains incompletely understood due to the complex effects of channel geometry and the properties of the working fluids. The presence of surfactants in the system further complicates the problem. This work deals with the effect of a water solution of Tween 20 surfactant on the dynamics of a slug flow in a curved microchannel. Situations with surfactant concentrations below and above the critical concentration of micelle formation are considered. Regime maps are plotted, and three regimes of water phase dispersion are identified. It is shown that increasing the surfactant concentration leads to stabilization of slug interfaces in straight sections, while the probability of slug rupture in curved sections increases due to reduced interfacial tension and intense mixing of the surfactant within the slugs. The decisive influence of the surfactant concentration relative to the critical concentration of micelle formation on the dynamics of microdroplet detachment processes in straight and curved sections of the channel is revealed.

KW - curved microchannel

KW - flow of immiscible liquids

KW - slug flow regime

KW - surfactants

UR - https://www.scopus.com/pages/publications/105038970294

UR - https://elibrary.ru/item.asp?id=85549724

UR - https://www.mendeley.com/catalogue/6359ccdf-d402-3c18-944c-6257ec6d35ee/

U2 - 10.1134/S0869864325040079

DO - 10.1134/S0869864325040079

M3 - Article

VL - 32

SP - 897

EP - 903

JO - Thermophysics and Aeromechanics

JF - Thermophysics and Aeromechanics

SN - 0869-8643

IS - 4

ER -

ID: 77912097