Open AccessPressure perturbation influence on the length and formation of immiscible liquid plugs in a T-shaped microchannel
Author(s) -
Alexander Kovalev,
Anna A. Yagodnitsyna,
A. V. Bilsky
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1677/1/012063
Subject(s) - spark plug , backflow , plug flow , mechanics , perturbation (astronomy) , amplitude , microchannel , entrainment (biomusicology) , maxima and minima , materials science , thermodynamics , physics , optics , mathematics , mathematical analysis , geology , inlet , acoustics , quantum mechanics , geomorphology , rhythm
The influence of input pressure perturbations on the plug length and plug formation stages during liquid-liquid plug flow was studied experimentally. Sine-shaped perturbations with amplitudes equal to 1 and 2 magnitudes of average pressure in the unperturbed flow were shown to have a strong influence on the plug length distribution. Stabilization of plug flow and reduction of plug length standard deviation was found for the perturbation period equal to the natural period of a system. The effect of backflow in the dispersed liquid entrainment was observed in the local minima of the perturbation signal.