TY - JOUR

T1 - Influence of low-frequency external pulsations of liquid flow rate on gas-liquid slug flow in a rectangular microchannel

AU - Bartkus, German

AU - Kovalev, Alexander

AU - Yagodnitsyna, Anna

N1 - This research was funded by the Russian Science Foundation (Grant No. 21-79-10307). Публикация для корректировки.

PY - 2022

Y1 - 2022

N2 - This paper presents the results of an experimental study of the influence of the liquid flow rate of external pulsations on the gas-liquid flow characteristics of periodic slug flow in a microchannel. The experimental data were obtained using high-speed visualization of the flow of an ethanol-nitrogen mixture in a T-junction microchannel with a 390 × 150 μm rectangular cross section. A novelty of this work was the use of pulsations of the continuous liquid phase on the gas-liquid flow. The form of external pulsations was a sine wave with different frequencies (f = 1 and 2 Hz) and amplitude values (A = 8%, 20%, and 40%). The results obtained showed that using high-amplitude and low-frequency external pulsations destroys periodic slug flow and changes the monodispersity of bubbles and liquid slugs. The statistical characteristics of the flow were obtained based on the frequency and amplitude of the pulsations.

AB - This paper presents the results of an experimental study of the influence of the liquid flow rate of external pulsations on the gas-liquid flow characteristics of periodic slug flow in a microchannel. The experimental data were obtained using high-speed visualization of the flow of an ethanol-nitrogen mixture in a T-junction microchannel with a 390 × 150 μm rectangular cross section. A novelty of this work was the use of pulsations of the continuous liquid phase on the gas-liquid flow. The form of external pulsations was a sine wave with different frequencies (f = 1 and 2 Hz) and amplitude values (A = 8%, 20%, and 40%). The results obtained showed that using high-amplitude and low-frequency external pulsations destroys periodic slug flow and changes the monodispersity of bubbles and liquid slugs. The statistical characteristics of the flow were obtained based on the frequency and amplitude of the pulsations.

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85164291952&origin=inward&txGid=c1b331f74cac8693a98e51ff82cc1e41

UR - https://www.mendeley.com/catalogue/cb526edf-326f-3738-9ae7-7e31308f4fc1/

U2 - 10.1615/interfacphenomheattransfer.2022046727

DO - 10.1615/interfacphenomheattransfer.2022046727

M3 - Article

VL - 11

SP - 1

EP - 9

JO - Interfacial Phenomena and Heat Transfer

JF - Interfacial Phenomena and Heat Transfer

SN - 2169-2785

IS - 1

ER -