Open AccessLiquid-liquid capillary rise
Author(s) -
Ioana Rasuceanu,
Claudiu Pătraşcu,
I Magos,
N Trandas,
Corneliu Balan
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/664/1/012002
Subject(s) - capillary action , liquid liquid , mechanics , tube (container) , flow (mathematics) , position (finance) , liquid flow , constant (computer programming) , dynamics (music) , interface (matter) , capillary number , materials science , thermodynamics , chemistry , physics , chromatography , computer science , finance , acoustics , economics , composite material , programming language
We study the dynamics of capillary rise of a liquid-liquid interface using two immiscible liquids. By adjusting the height of the less dense fluid column, we measure the rise of the ensemble in the tube. A theoretical model is proposed that captures the time dependence of the position of the interface. Particular attention is given to the dynamics of the oil-water interface. Different types of flow regimes are identified and compared with previous theoretical and experimental findings. The theoretical model was found to be in good qualitative agreement, even though the contact angles of the two interfaces do not remain constant during the elevation of the fluid.